27268943
265000
16.00
20000000
49000
12500000
12500000
7500000
5000000
7500000
478800000
-54729000
22229000
9935000
73991017
62785000
736026
1000
-54880000
150000
-68574000
27831000
35517000
0
0
94483404
103797000
729391
1000
-68907000
332000
2008574
115000000
6.65
0
22879160
0.001
5000000
0
22879160
0.001
209838000
168000
6177000
1239000
104441000
585000
0
2348000
3172000
-105385000
13078000
117519000
23000
50000
7500000
6901000
42398000
-35000
1381000
431000
6328000
42398000
391000
242000
35000
428000
117519000
99868000
1229000
79000
0
117198000
148000
42509000
6000
57359000
57394000
1345000
58103000
41961000
129000
437000
4928000
29048000
1180000
6119000
137000
79000
7019000
79000
50000
85126000
27767000
57359000
22168000
1000000
27767000
34191000
14742000
14742000
14742000
391000
265000
0
13205
796
0
22879160
23000
-105385000
209838000
-35000
22168000
14742000
1000000
27767000
34191000
1000000
1000000
8000
3470000
3478000
18000
18698000
18716000
9000
34191000
34200000
35.00
2555110
115000000
19.76
0
27242503
19.76
0.001
995324
5000000
0
27242503
5.60
0.001
2555110
292000
432000
348961000
161000
912000
3453000
1802000
169110000
422000
0
4000
7495000
6112000
-179671000
19996000
189106000
27000
0
82000
120000
6119000
16543000
74541000
-207000
106000
2936000
3243000
11186000
74541000
1323000
94000
207000
27515
3918000
2780000
189106000
175411000
1537000
1773000
902000
0
188110000
25927000
149484000
10555000
149687000
1708000
35595000
74541000
1022000
3918000
11570000
46568000
250000
16000
3727000
3183000
648000
2936000
3183000
6119000
306000
36000
12500000
12250000
0
1250000
0.50
0.108
71000
359000
186000
406000
162180000
12696000
149484000
3000000
125516000
4697000
19468000
4999000
4500000
13231000
13231000
13231000
15077621
1323000
1625761
2168221
1889150
168221
257460
31249000
10642000
42493000
12812000
0
9363
0
0
27242503
27000
-179671000
348961000
-207000
3000000
125516000
13231000
4697000
19468000
4999000
4500000
10000
19468000
19478000
3000
31000
12856000
12884000
1000
166000
112660000
112825000
4500000
4500000
6.28
102672000
2508000
6900000
114000
7500000
0.85
2014-12-31
2014-09-01
P5Y
2019-09-30
915166
3942200
473000
130044000
P3Y
2017-07-31
2
-15004000
P6Y3M
0.0112
-19.53
-0.340
0.006
0.85
0.400
0.037
-0.039
0.00
1.83
0.041
729001
0.000
17000
-14027000
-14240000
0
395000
-165000
196000
-13780000
-247000
-247000
-14027000
-14027000
-12325000
-1702000
-250000
0
213000
105000
25582000
13780000
-17000
40603000
9561000
26000
-799000
40799000
395000
4219000
237000
547000
12000
5602000
0
1237000
0.031
219000
176000
-250000
1237000
1310330000
0.054
156000
16110473
34844000
1000
4381914
5955000
0
38000
0
-213000
6635
-14027000
395000
213000
0.024
-28241000
P6Y3M
0.0190
-3.00
-0.340
0.006
0.90
0.395
0.019
-0.040
0.00
698642
11.73
0.006
12189155
0.000
58000
-36478000
-35000
3000
-36570000
0
632000
1553000
100164000
1121000
2312000
-35532000
-946000
57200000
-35000
28000
-104000
-36513000
49000
-35000
-36478000
-35818000
-660000
-93000
0
92000
31000
160000
22586000
35532000
870000
-57315000
108142000
27391000
61000
2327000
3000
442000
1553000
3000
8141000
104331000
3569000
195000
102672000
815000
46000
7386000
148000
16000
14567000
0
-1133000
3569000
3569000
-104331000
225000
57000
0.032
7019000
50000
697050
1592
1063000
490000
-104000
424000
2008574000
0.025
1000
204101
442000
0
0
0
870000
-92000
-94687505
104331000
6900000
398
7000
15077621
-15000
171750
-36478000
3000
1553000
100157000
92000
3569000
-104316000
-35000
FY
0.001
-59554000
P6Y3M
The Company was obligated to make monthly, interest-only payments on any term loans funded under the Credit Facility until December 1, 2014 and, thereafter, to pay 36 consecutive, equal monthly installments of principal and interest from January 1, 2015 through December 1, 2017. As per the terms of the agreement, in June 2014, upon the completion of the Company’s IPO, the term of monthly, interest-only payments were extended until June 1, 2015.
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Net deferred tax assets as of December 31, 2015 and 2014
consisted of the following:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="71%"></td>
<td valign="bottom" width="12%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="11%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Current deferred tax assets:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Accrued expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">431</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Other temporary differences</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total current deferred tax assets</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">437</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Noncurrent deferred tax assets:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Capitalized research and development expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">46,568</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,048</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Net operating loss carryforwards</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">11,186</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6,328</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Tax credit carryforwards</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">11,570</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,928</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Capitalized legal expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,773</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,229</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Stock-based compensation</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,780</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">428</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Accrued expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">648</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Other temporary differences</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">16</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total noncurrent deferred tax assets</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">74,541</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">41,961</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total gross deferred tax assets</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">74,541</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">42,398</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Valuation allowance</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(74,541</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(42,398</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Net deferred tax assets</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The domestic and foreign components of loss before income taxes are
as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="84%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Domestic</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(72,147</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(35,818</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(12,325</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Foreign</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(2,139</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(660</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(1,702</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Loss before income taxes</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(74,286</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(36,478</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(14,027</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Estimated future principal payments due under the Term Loan A are
as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="68%" align="center" border="0">
<tr>
<td width="86%"></td>
<td valign="bottom" width="8%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap">
<p style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-BOTTOM: rgb(0,0,0) 1pt solid; WIDTH: 95.55pt">
<b>Years Ending December 31,</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2016</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,936</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2017</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,183</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Total</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,119</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>12. Retirement Plan</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company has a Savings Incentive Match Plan for employees. Under
the terms of the plan, the Company contributes 2% of an
employee’s annual base salary, up to a maximum of the annual
Internal Revenue Service compensation limits, for all full-time
employees.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
During the years ended December 31, 2015, 2014 and 2013, the
Company recognized $144, $61 and $26, respectively, of expense
related to its contributions to the plan.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following table summarizes the Company’s marketable
securities as of December 31, 2015 and 2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="61%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Amortized<br />
Cost</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Gains</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Losses</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Fair Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Assets:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom" colspan="5"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">112,825</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(166</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">112,660</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds (due after 1 year through 2 years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,884</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(31</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,856</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,478</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(10</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">149,687</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">4</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(207</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="58%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2"><b>Amortized</b>
<p style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'" align="center"><b>Cost</b></p>
</td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Gains</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Losses</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Fair Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Assets:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom" colspan="5"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">34,200</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(9</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">34,191</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">18,716</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(18</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">18,698</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds (due after 1 year through 2 years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,478</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(8</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,470</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">57,394</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(35</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">57,359</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
</div>
2015
false
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>13. Australia Research and Development Tax Incentive</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company’s wholly owned subsidiary, Zafgen Australia Pty
Limited, which conducts core research and development activities on
behalf of the Company, is eligible to receive a 45% refundable tax
incentive for qualified research and development activities. For
the years ended December 31, 2015, 2014 and 2013, $1,357, $424
and $1,237, respectively, was recorded as a reduction to research
and development expenses in the consolidated statements of
operations. These amounts represented 45% of the Company’s
qualified research and development spending in Australia. The
refund is denominated in Australian dollars and, therefore, the
related receivable is re-measured into U.S. dollars as of each
reporting date. For the years ended December 31, 2015, 2014
and 2013, the Company recorded in its consolidated statements of
operations unrealized foreign currency exchange losses of $82, $104
and $250, respectively, related to this tax incentive receivable.
As of December 31, 2015 and 2014, the Company’s tax
incentive receivable from the Australian government was $1,323 and
$391, respectively.</p>
</div>
0.0175
35268
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>6. Notes Payable</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On March 31, 2014, the Company entered into a loan and
security agreement with Oxford Finance LLC and Midcap Financial
(the “Credit Facility”). The Credit Facility provided
for initial borrowings of $7,500 under a term loan (“Term
Loan A”) and additional borrowings of up to $12,500 under
other term loans, for a maximum of $20,000. On March 31, 2014,
the Company received proceeds of $7,500 from the issuance of
promissory notes under the Term Loan A. Of the additional $12,500
amount that was available, $7,500 (“Term Loan B”) was
available to be drawn down until September 30, 2014 and $5,000
(“Term Loan C”) was available to be drawn down for a
30-day period upon the completion of the Company’s IPO that
occurred in June 2014. The Company elected not to draw down Term
Loan B or Term Loan C and these amounts are no longer available to
the Company. All promissory notes issued under the Credit Facility
are collateralized by substantially all of the Company’s
personal property, other than its intellectual property.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Upon entering into this Credit Facility, the Company was obligated
to make monthly, interest-only payments on any term loans funded
under the Credit Facility until December 1, 2014 and,
thereafter, to pay 36 consecutive, equal monthly installments of
principal and interest from January 1, 2015 through
December 1, 2017. As per the terms of the agreement, in June
2014, upon the completion of the Company’s IPO, the term of
monthly, interest-only payments were extended until June 1,
2015. Outstanding term loans under the Credit Facility bear
interest at an annual rate of 8.1%. In addition, a final payment
equal to 6.0% of any amounts drawn under the Credit Facility is due
upon the earlier of the maturity date, acceleration of the term
loans or prepayment of all or part of the term loans. The Company
accrues the final payment amount due relating to Term Loan A of
$450, to outstanding debt by charges to interest expense using the
effective-interest method from the date of issuance through the
maturity date.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Term Loan A was recorded in the balance sheet net of debt discount
of $114 that was related to fees assessed by the lender at the time
of borrowing. The debt discount is being accreted to the principal
amount of the debt. In addition, deferred financing costs of $49
are being amortized to interest expense using the
effective-interest method over the same term. For the years ended
December 31, 2015 and 2014, the company recorded additional
interest expense of $62 and $50, respectively, related to the
accretion of debt discount and amortization of deferred financing
costs. The effective annual interest rate of the outstanding debt
under the Credit Facility is approximately 10.8%.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company was obligated to pay a separate fee upon any IPO; a
sale of substantially all of the Company’s assets; or a
merger, reorganization or sale of the Company’s voting equity
securities where existing voting stockholders hold less than 50% of
voting equity securities after such transaction.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
There are no financial covenants associated with the debt facility;
however, there are negative covenants restricting the
Company’s activities, including limitations on dispositions,
mergers or acquisitions; encumbering or granting a security
interest in its intellectual property; incurring indebtedness or
liens; paying dividends; making certain investments; and certain
other business transactions.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Credit Facility also includes events of default, the occurrence
and continuation of any of which provides the lenders the right to
exercise remedies against the Company and the collateral securing
the loans under the Credit Facility, including cash in the amount
of the outstanding balance. These events of default include, among
other things, failure to pay any amounts due under the Credit
Facility, insolvency, the occurrence of a material adverse event,
the occurrence of any default under certain other indebtedness and
a final judgment against the Company in an amount greater than
$250.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Notes payable consist of the following:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="75%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Notes payable</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,119</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">7,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Less: current portion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(2,936</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(1,381</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Notes payable, net of current portion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,183</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6,119</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Debt discount, net of accretion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(36</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(79</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accretion related to final payment</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">306</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">137</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Notes payable, net of discount, long term</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,453</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,177</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Estimated future principal payments due under the Term Loan A are
as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="68%" align="center" border="0">
<tr>
<td width="86%"></td>
<td valign="bottom" width="8%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap">
<p style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-BOTTOM: rgb(0,0,0) 1pt solid; WIDTH: 95.55pt">
<b>Years Ending December 31,</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2016</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,936</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2017</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,183</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Total</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,119</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
During the years ended December 31, 2015 and 2014, the Company
recognized $806 and $870 of interest expense related to the Credit
Facility.</p>
</div>
P5Y
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Segment Data</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company manages its operations as a single segment for the
purposes of assessing performance and making operating decisions.
The Company’s singular focus is on advancing novel
therapeutics for patients suffering from severe obesity and
obesity-related disorders. No revenue has been generated since
inception, and all tangible assets are held in the United
States.</p>
</div>
-2.78
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 0pt">
<b>Property and Equipment</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
Property and equipment are stated at cost less accumulated
depreciation. Depreciation expense is recognized using the
straight-line method over a five-year estimated useful life for
equipment, furniture and fixtures and office equipment. Leasehold
improvements are amortized over the shorter of the asset life or
the term of the lease agreement. Expenditures for repairs and
maintenance of assets are charged to expense as incurred. Upon
retirement or sale, the cost and related accumulated depreciation
of assets disposed of are removed from the accounts and any
resulting gain or loss is included in loss from operations.</p>
</div>
10-K
0001374690
2005-11-22
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company excluded the following common stock equivalents,
outstanding as of December 31, 2015, 2014 and 2013, from the
computation of diluted net loss per share attributable to common
stockholders for the years ended December 31, 2015, 2014 and
2013 because they had an anti-dilutive impact due to the net loss
attributable to common stockholders incurred for the periods:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="2%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="2%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="2%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>As of December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Options to purchase common stock</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">
    2,555,110</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,008,574</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">  1,310,330</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" />
</div>
P7Y10M24D
P6Y6M
32.41
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Comprehensive Loss</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
Comprehensive loss includes net loss as well as other changes in
stockholders’ equity (deficit) that result from transactions
and economic events other than those with stockholders. For the
years ended December 31, 2015 and 2014, the Company’s
only element of other comprehensive loss was unrealized loss on
marketable securities. For the year ended December 31, 2013,
there was no difference between net loss and comprehensive
loss.</p>
</div>
Accelerated Filer
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Research and Development Costs</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
Research and development costs are expensed as incurred. Included
in research and development expenses are wages, stock-based
compensation and benefits of employees, third-party license fees
and milestones and other operational costs related to the
Company’s research and development activities, including
facility-related expenses and external costs of outside vendors
engaged to conduct pre-clinical studies, manufacturing activities,
and clinical trials. The Company records research and development
expenses net of any research and development tax incentives the
Company is entitled to receive from government authorities.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>5. Accrued Expenses</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Accrued expenses consisted of the following as of December 31,
2015 and 2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accrued payroll and related expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1,802</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1,239</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accrued research and development expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,727</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,180</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accrued professional fees</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">422</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">585</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accrued other</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">161</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">168</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,112</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,172</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
-0.340
0.009
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Concentration of Credit Risk and of Significant
Suppliers</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
Financial instruments that potentially expose the Company to
concentrations of credit risk consist primarily of cash and cash
equivalents and marketable securities. The Company has all cash and
cash equivalents and marketable securities balances at two
accredited financial institutions in amounts that exceed federally
insured limits. The Company does not believe that it is subject to
unusual credit risk beyond the normal credit risk associated with
commercial banking relationships.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
The Company is dependent on third-party manufacturers to supply
products for research and development activities in its programs.
In particular, the Company relies and expects to continue to rely
on a small number of manufacturers to supply it with its
requirements for the active pharmaceutical ingredients and
formulated drugs related to these programs. These programs could be
adversely affected by a significant interruption in the supply of
active pharmaceutical ingredients and formulated drugs.</p>
</div>
0.02
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>4. Property and Equipment, net</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Property and equipment, net consisted of the following as of
December 31, 2015 and 2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="84%" align="center" border="0">
<tr>
<td width="68%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Useful Life</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Office equipment</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5 years</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">359</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">79</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Furniture and fixtures</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5 years</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">186</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">50</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Equipment</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5 years</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">71</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Leasehold improvements</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">*</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">406</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,022</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">129</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Less: Accumulated depreciation</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(120</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(50</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">902</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">79</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 2pt; WHITE-SPACE: normal; BORDER-BOTTOM: rgb(0,0,0) 1px solid; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium/8pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; WIDTH: 142px; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" border="0">
<tr>
<td valign="top" width="2%" align="left">*</td>
<td valign="top" align="left">shorter of asset life or lease
term</td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Depreciation expense was $70, $16 and $12 for the years ended
December 31, 2015, 2014 and 2013, respectively.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Deferred Offering Costs</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company capitalizes certain legal, accounting and other
third-party fees that are directly associated with in-process
equity financings as other assets until such financings are
consummated. After consummation of the equity financing, these
costs are recorded in stockholders’ equity (deficit) as a
reduction of additional paid-in capital generated as a result of
the offering or as a reduction to the carrying value of preferred
stock issued. As of December 31, 2014, the Company recorded
$148 of deferred offering costs, included in other assets in the
accompanying consolidated balance sheet, in contemplation of the
Company’s follow-on offering of its common stock, which
closed in January 2015.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>3. Fair Value Measurements and Marketable Securities</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Fair Value Measurements</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following tables present information about the Company’s
financial assets that have been measured at fair value at
December 31, 2015 and 2014, and indicate the fair value of the
hierarchy of the valuation inputs utilized to determine such fair
value. In general, fair values determined by Level 1 inputs utilize
quoted prices (unadjusted) in active markets for identical assets
or liabilities. Fair value determined by Level 2 inputs utilize
observable inputs other than Level 1 prices, such as quoted prices,
for similar assets or liabilities, quoted market prices in markets
that are not active or other inputs that are observable or can be
corroborated by observable market data for substantially the full
term of the related assets or liabilities. Fair values determined
by Level 3 inputs are unobservable data points for the asset or
liability, and includes situations where there is little, if any,
market activity for the asset or liability.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following tables summarize the Company’s cash equivalents
and marketable securities as of December 31, 2015 and
2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="53%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Total</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Quoted<br />
Prices in<br />
Active<br />
Markets<br />
(Level 1)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Other<br />
Observable<br />
Inputs<br />
(Level 2)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Unobservable<br />
Inputs<br />
(Level 3)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Cash equivalents:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Money market funds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,999</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,999</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,697</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,697</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total cash equivalents</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">25,927</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,696</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Marketable securities:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">125,516</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">125,516</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Total cash equivalents and marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">175,411</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">162,180</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="55%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Total</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Quoted<br />
Prices in<br />
Active<br />
Markets<br />
(Level 1)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Other<br />
Observable<br />
Inputs<br />
(Level 2)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Unobservable<br />
Inputs<br />
(Level 3)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Cash equivalents:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Money market funds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">14,742</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">14,742</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total cash equivalents</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">42,509</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">14,742</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Marketable securities:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">34,191</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">34,191</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">22,168</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">22,168</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">57,359</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">57,359</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Total cash equivalents and marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">99,868</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">14,742</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">85,126</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The carrying amounts reflected in the consolidated balance sheets
for tax incentive receivable, accounts payable, and accrued
expenses approximate fair value due to their short-term maturities.
The carrying value of the Company’s outstanding notes payable
approximates fair value (a level 2 fair value measurement),
reflecting discount rates currently available to the Company.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Marketable Securities</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following table summarizes the Company’s marketable
securities as of December 31, 2015 and 2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="61%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Amortized<br />
Cost</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Gains</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Losses</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Fair Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Assets:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom" colspan="5"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">112,825</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(166</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">112,660</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds (due after 1 year through 2 years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,884</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(31</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,856</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,478</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(10</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">149,687</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">4</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(207</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="58%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2"><b>Amortized</b>
<p style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'" align="center"><b>Cost</b></p>
</td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Gains</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Gross<br />
Unrealized<br />
Losses</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Fair Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Assets:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom" colspan="5"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">34,200</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(9</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">34,191</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">18,716</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(18</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">18,698</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds (due after 1 year through 2 years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,478</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(8</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,470</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper (due within 1 year)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">57,394</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(35</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">57,359</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
2014-03-31
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Marketable securities</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Marketable securities consist of investments with original
maturities greater than ninety days. The Company has classified its
investments with maturities beyond one year as short term, based on
their highly liquid nature and because such marketable securities
represent the investment of cash that is available for current
operations. The Company considers its investment portfolio of
investments available-for-sale. Accordingly, these investments are
recorded at fair value, which is based on quoted market prices.
Unrealized gains and losses are reported as a component of
accumulated other comprehensive income (loss) in
stockholders’ equity (deficit). Realized gains and losses and
declines in value judged to be other than temporary are included as
a component of other income (expense), net based on the specific
identification method. When determining whether a decline in value
is other than temporary, the Company considers various factors,
including whether the Company has the intent to sell the security,
and whether it is more likely than not that the Company will be
required to sell the security prior to recovery of its amortized
cost basis. Fair value is determined based on quoted market
prices.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>14. Quarterly Financial Data (Unaudited)</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following information has been derived from unaudited
consolidated financial statements that, in the opinion of
management, include all recurring adjustments necessary for a fair
statement of such information.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="43%"></td>
<td valign="bottom" width="10%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="9%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="9%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="9%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>Three Months Ended</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>March 31,<br />
2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>June 30,</b><br />
<b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>September 30,<br />
2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>December 31,<br />
2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in thousands,
except per share data)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Revenue</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Operating expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,240</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">17,610</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,717</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">23,246</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Net loss attributable to common stockholders</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(13,472</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(17,756</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(19,884</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(23,174</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Net loss per share attributable to common stockholders, basic and
diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.53</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.66</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.73</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.85</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Weighted average common shares outstanding,basic and diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">25,615,282</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,011,960</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,138,667</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,238,079</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1pt">
<td height="16"></td>
<td height="16" colspan="16"></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>Three Months Ended</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>March 31,<br />
2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>June 30,</b><br />
<b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>September 30,<br />
2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>December 31,<br />
2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in thousands,
except per share data)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Revenue</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Operating expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,521</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5,986</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">14,361</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">10,664</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Net loss attributable to common stockholders</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(4,507</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(6,443</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(14,689</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(10,931</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Net loss per share attributable to common stockholders, basic and
diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(6.18</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(2.96</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.65</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.48</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Weighted average common shares outstanding,basic and diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">729,391</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,178,465</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">22,707,012</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">22,783,817</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Related to these license agreements, the Company recorded research
and development expenses in its consolidated statements of
operations as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="84%" align="center" border="0">
<tr>
<td width="74%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended
December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
License, milestone, and license maintenance fees</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">7,019</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">7,019</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Accrued expenses consisted of the following as of December 31,
2015 and 2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="76%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accrued payroll and related expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1,802</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1,239</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accrued research and development expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,727</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,180</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accrued professional fees</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">422</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">585</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accrued other</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">161</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">168</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,112</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,172</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
0.87
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>1. Nature of the Business and Basis of Presentation</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Zafgen, Inc. (the “Company”) was incorporated on
November 22, 2005 under the laws of the State of Delaware. The
Company is a biopharmaceutical company dedicated to significantly
improving the health and well-being of patients affected by obesity
and complex metabolic disorders. Zafgen is focused on developing
novel therapeutics that treat the underlying biological mechanisms
through the methionine aminopeptidase 2 (“MetAP2”)
pathway. Beloranib, the Company’s lead product candidate, is
a novel, first-in-class, twice-weekly subcutaneous injection being
developed for the treatment of multiple indications, including
severe obesity in two rare diseases, Prader-Willi syndrome and
obesity caused by hypothalamic injury, including
craniopharyngioma-associated obesity. Zafgen is also developing
ZGN-839, a liver-targeted MetAP2 inhibitor, for the treatment of
nonalcoholic steatohepatitis and abdominal obesity, as well as
other second-generation MetAP2 inhibitors for severe obesity. Since
its inception, the Company has devoted substantially all of its
efforts to research and development, recruiting management,
acquiring operating assets and raising capital.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company is subject to risks common to companies in the
biotechnology industry including, but not limited to, new
technological innovations, protection of proprietary technology,
dependence on key personnel, compliance with government regulations
and the need to obtain additional financing. Product candidates
currently under development will require significant additional
research and development efforts, including extensive pre-clinical
and clinical testing and regulatory approval, prior to
commercialization. These efforts require significant amounts of
additional capital, adequate personnel infrastructure, and
extensive compliance-reporting capabilities.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company’s product candidates are all in the development
stage. There can be no assurance that the Company’s research
and development will be successfully completed, that adequate
protection for the Company’s intellectual property will be
obtained, that any products developed will obtain necessary
government regulatory approval or that any approved products will
be commercially viable. Even if the Company’s product
development efforts are successful, it is uncertain when, if ever,
the Company will generate significant revenue from product sales.
The Company operates in an environment of rapid change in
technology and substantial competition from pharmaceutical and
biotechnology companies. In addition, the Company is dependent upon
the services of its employees and consultants.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The consolidated financial statements include the accounts of the
Company and its wholly owned subsidiaries Zafgen Securities
Corporation, Zafgen Australia Pty Limited, and Zafgen Animal
Health, LLC. All significant intercompany balances and transactions
have been eliminated.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The accompanying consolidated financial statements have been
prepared in conformity with accounting principles generally
accepted in the United States of America (“GAAP”).</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On June 24, 2014, the Company completed an initial public
offering (“IPO”) of its common stock, which resulted in
the sale of 6,900,000 shares at a price of $16.00 per share. The
Company received net proceeds from the IPO of approximately
$102,672 based upon the price of $16.00 per share and after
deducting underwriting discounts and commissions paid by the
Company. The Company also incurred offering costs of $2,508 related
to the IPO.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On January 28, 2015, the Company completed a follow-on
offering of its common stock, which resulted in the sale of
3,942,200 shares at a price of $35.00 per share. The Company
received net proceeds from the follow-on offering of $130,044 based
upon the price of $35.00 per share after deducting underwriting
discounts and commissions. The Company also incurred offering costs
of $473 related to the follow-on offering.</p>
</div>
0.433
0.039
-0.039
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Patent Costs</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
All patent-related costs incurred in connection with filing and
prosecuting patent applications are recorded as general and
administrative expenses as incurred, as recoverability of such
expenditures is uncertain.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Property and equipment, net consisted of the following as of
December 31, 2015 and 2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="84%" align="center" border="0">
<tr>
<td width="68%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Useful Life</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Office equipment</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5 years</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">359</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">79</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Furniture and fixtures</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5 years</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">186</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">50</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Equipment</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5 years</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">71</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Leasehold improvements</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">*</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">406</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,022</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">129</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Less: Accumulated depreciation</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(120</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(50</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">902</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">79</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 2pt; WHITE-SPACE: normal; BORDER-BOTTOM: rgb(0,0,0) 1px solid; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: medium/8pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; WIDTH: 142px; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" border="0">
<tr>
<td valign="top" width="2%" align="left">*</td>
<td valign="top" align="left">shorter of asset life or lease
term</td>
</tr>
</table>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Basic and diluted net loss per share attributable to common
stockholders was calculated as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<td width="67%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended
December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Basic and diluted net loss per share attributable to common
stockholders:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Numerator:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Net loss</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(74,286</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(36,478</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(14,027</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Accretion of redeemable convertible preferred stock to redemption
value</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(92</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(213</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 7em; TEXT-INDENT: -1em">
Net loss attributable to common stockholders</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(74,286</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(36,570</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(14,240</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Denominator:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Weighted average common shares outstanding, basic and diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">26,756,079</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,189,155</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right"> 729,001</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Net loss per share attributable to common stockholders, basic and
diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(2.78</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(3.00</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(19.53</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company recorded stock-based compensation expense related to
stock options and restricted common stock in the following expense
categories within its consolidated statements of operations:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended
December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Research and development</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,930</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">490</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">176</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
General and administrative</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5,652</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,063</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">219</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">
         8,582</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">
         1,553</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">
         395</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
0.00
39.37
--12-31
Yes
2017-12-01
Zafgen, Inc.
<div>
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The following information has been derived from unaudited
consolidated financial statements that, in the opinion of
management, include all recurring adjustments necessary for a fair
statement of such information.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="43%"></td>
<td valign="bottom" width="10%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="9%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="9%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="9%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>Three Months Ended</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>March 31,<br />
2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>June 30,</b><br />
<b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>September 30,<br />
2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>December 31,<br />
2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in thousands,
except per share data)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Revenue</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Operating expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,240</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">17,610</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,717</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">23,246</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Net loss attributable to common stockholders</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(13,472</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(17,756</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(19,884</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(23,174</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Net loss per share attributable to common stockholders, basic and
diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.53</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.66</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.73</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.85</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Weighted average common shares outstanding,basic and diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">25,615,282</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,011,960</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,138,667</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,238,079</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1pt">
<td height="16"></td>
<td height="16" colspan="16"></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>Three Months Ended</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>March 31,<br />
2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>June 30,</b><br />
<b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>September 30,<br />
2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>December 31,<br />
2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="14" align="center"><b>(in thousands,
except per share data)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Revenue</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Operating expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,521</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5,986</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">14,361</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">10,664</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Net loss attributable to common stockholders</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(4,507</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(6,443</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(14,689</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(10,931</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Net loss per share attributable to common stockholders, basic and
diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(6.18</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(2.96</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.65</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(0.48</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Weighted average common shares outstanding,basic and diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">729,391</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,178,465</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">22,707,012</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">22,783,817</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
</table>
<br class="Apple-interchange-newline" />
</div>
No
0.081
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<b>11. Income Taxes</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
During the years ended December 31, 2015, 2014 and 2013, the
Company recorded no income tax benefits for the net operating
losses incurred in each year due to its uncertainty of realizing a
benefit from those items.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The domestic and foreign components of loss before income taxes are
as follows:</p>
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 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="84%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Domestic</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(72,147</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(35,818</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(12,325</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Foreign</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(2,139</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(660</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(1,702</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Loss before income taxes</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(74,286</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(36,478</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(14,027</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
A reconciliation of the U.S. federal statutory income tax rate to
the Company’s effective income tax rate is as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="84%" align="center" border="0">
<tr>
<td width="75%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended
December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Federal statutory income tax rate</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(34.0</td>
<td valign="bottom" nowrap="nowrap">%) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(34.0</td>
<td valign="bottom" nowrap="nowrap">%) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(34.0</td>
<td valign="bottom" nowrap="nowrap">%) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Federal and state research and development tax credit</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.9</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(1.9</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.7</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
State taxes, net of federal benefit</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.9</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(4.0</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.9</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Orphan drug tax credit</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.5</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.2</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.1</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Stock compensation expense</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.9</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.6</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.6</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Nondeductible Australia research and development expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1.0</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.6</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4.1</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Other items</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.1</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2.4</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Change in deferred tax asset valuation allowance</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">43.3</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">39.5</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">40.0</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Effective income tax rate</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.0</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.0</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.0</td>
<td valign="bottom" nowrap="nowrap">% </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Net deferred tax assets as of December 31, 2015 and 2014
consisted of the following:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="71%"></td>
<td valign="bottom" width="12%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="11%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Current deferred tax assets:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Accrued expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">431</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Other temporary differences</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total current deferred tax assets</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">437</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Noncurrent deferred tax assets:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Capitalized research and development expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">46,568</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">29,048</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Net operating loss carryforwards</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">11,186</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6,328</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Tax credit carryforwards</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">11,570</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,928</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Capitalized legal expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,773</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,229</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Stock-based compensation</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,780</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">428</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Accrued expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">648</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Other temporary differences</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">16</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total noncurrent deferred tax assets</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">74,541</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">41,961</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total gross deferred tax assets</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">74,541</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">42,398</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Valuation allowance</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(74,541</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(42,398</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Net deferred tax assets</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In 2015, the Company identified a misstatement related to the
research and development credits that the Company had previously
calculated and claimed on its tax returns. The Company previously
had been assuming that all prior research and development credits
would result in a higher credit whereas the Company has now
determined that certain actual costs only qualify for a reduced
credit. The net impact of the misstatement was to overstate gross
deferred tax assets by $3.5 million and overstate the valuation
allowance by $3.5 million with no impact to net deferred tax assets
or the provision for income taxes. In addition, the misstatement
had an impact of 2.5% and 5.4% to the 2014 and 2013 rate
reconciliation, respectively, for the federal and state R&D tax
credits that each had an offsetting adjustment to the change in
valuation allowance. The misstatement was determined to be
immaterial and had no effect on the Company’s consolidated
balance sheets, statements of operations, statements of changes in
stockholders’ equity (deficit) or statements cash flows for
any period presented. As a result, the 2014 amounts in the deferred
tax table and the 2014 and 2013 amounts in the rate reconciliation
table presented herein have been revised to correct for this
misstatement.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In November 2015, the FASB issued ASU No. 2015-17, <i>Balance Sheet
Classification of Deferred Taxes.</i> This guidance requires
companies to classify all deferred tax assets and liabilities as
noncurrent on the balance sheet instead of separating deferred
taxes into current and noncurrent amounts. This guidance allows for
adoption on either a prospective or retrospective basis and will be
effective on January 1, 2017. Early adoption is permitted. The
Company has elected to early adopt this guidance on a prospective
basis and, as a result, prior consolidated balance sheets were not
retrospectively adjusted. The adoption of this guidance did not
have a material impact on the Company’s consolidated
financial statements and related disclosures.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Changes in the valuation allowance for deferred tax assets during
the years ended December 31, 2015, 2014 and 2013 related primarily
to the increase in net operating loss carryforwards, capitalized
research and development expenses and tax credit carryforwards and
were as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="70%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Valuation allowance as of beginning of year</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">42,398</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">27,831</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">22,229</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Decreases recorded as benefit to income tax provision</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Increases recorded to income tax provision</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">32,143</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">14,567</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5,602</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Valuation allowance as of end of year</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">74,541</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">42,398</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">27,831</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of December 31, 2015, the Company had net operating loss
carryforwards for federal and state income tax purposes of $42,493
and $31,249, respectively, which begin to expire in 2026 and 2030,
respectively. Included within these net operating loss
carryforwards are amounts of $12,812 and $10,642, respectively,
that were attributable to stock option exercises, which will be
recorded as an increase in additional paid-in capital once they are
realized in accordance with accounting for stock-based compensation
awards. As of December 31, 2015, the Company also had
available tax credit carryforwards for federal and state income tax
purposes of $10,555 and $1,537, respectively, which begin to expire
in 2026 and 2021, respectively. Utilization of the net operating
loss carryforwards and tax credit carryforwards may be subject to a
substantial annual limitation under Section 382 of the
Internal Revenue Code of 1986 due to ownership changes that have
occurred previously or that could occur in the future. These
ownership changes may limit the amount of carryforwards that can be
utilized annually to offset future taxable income.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In general, an ownership change, as defined by Section 382,
results from transactions increasing the ownership of certain
shareholders or public groups in the stock of a corporation by more
than 50% over a three-year period. The Company has not conducted a
study to assess whether a change of control has occurred or whether
there have been multiple changes of control since inception due to
the significant complexity and cost associated with such a study.
If the Company has experienced a change of control, as defined by
Section 382, at any time since inception, utilization of the
net operating loss carryforwards or tax credit carryforwards would
be subject to an annual limitation under Section 382, which is
determined by first multiplying the value of the Company’s
stock at the time of the ownership change by the applicable
long-term tax-exempt rate, and then could be subject to additional
adjustments, as required. Any limitation may result in expiration
of a portion of the net operating loss carryforwards or tax credit
carryforwards before utilization. Further, until a study is
completed and any limitation is known, no amounts are being
presented as an uncertain tax position.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of December 31, 2015 and 2014, the Company’s gross
deferred tax asset balance of $74,541 and $42,398, respectively,
was comprised principally of net operating loss carryforwards,
capitalized research and development expenses and tax credit
carryforwards. During the years ended December 31, 2015, 2014
and 2013, gross deferred tax assets increased due to additional net
operating loss carryforwards, research and development tax credits
generated and additional research and development expenses
capitalized for tax purposes.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company has evaluated the positive and negative evidence
bearing upon its ability to realize the deferred tax assets.
Management has considered the Company’s history of cumulative
net losses incurred since inception and its lack of
commercialization of any products or generation of any revenue from
product sales since inception and has concluded that it is more
likely than not that the Company will not realize the benefits of
the deferred tax assets. Accordingly, a full valuation allowance
has been established against the deferred tax assets as of
December 31, 2015 and 2014. Management reevaluates the
positive and negative evidence at each reporting period.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company has not recorded any amounts for unrecognized tax
benefits as of December 31, 2015 or 2014.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company files tax returns as prescribed by the tax laws of the
jurisdictions in which it operates. In the normal course of
business, the Company is subject to examination by federal and
state jurisdictions, where applicable. There are currently no
pending income tax examinations. The Company’s tax years are
still open under statute from 2011 to the present. Earlier years
may be examined to the extent that tax credit or net operating loss
carryforwards are used in future periods. The Company’s
policy is to record interest and penalties related to income taxes
as part of its income tax provision.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company considers only the direct effects of windfall tax
deductions.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
A reconciliation of the U.S. federal statutory income tax rate to
the Company’s effective income tax rate is as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="84%" align="center" border="0">
<tr>
<td width="75%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended
December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Federal statutory income tax rate</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(34.0</td>
<td valign="bottom" nowrap="nowrap">%) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(34.0</td>
<td valign="bottom" nowrap="nowrap">%) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(34.0</td>
<td valign="bottom" nowrap="nowrap">%) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Federal and state research and development tax credit</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.9</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(1.9</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.7</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
State taxes, net of federal benefit</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.9</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(4.0</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.9</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Orphan drug tax credit</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.5</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.2</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(3.1</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Stock compensation expense</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.9</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.6</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.6</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Nondeductible Australia research and development expenses</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1.0</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.6</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4.1</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Other items</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.1</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2.4</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Change in deferred tax asset valuation allowance</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">43.3</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">39.5</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">40.0</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Effective income tax rate</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.0</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.0</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0.0</td>
<td valign="bottom" nowrap="nowrap">% </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following table summarizes the Company’s stock option
activity since December 31, 2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<td width="61%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Shares Issuable<br />
Under Options</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Weighted<br />
Average<br />
Exercise<br />
Price</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Average<br />
Remaining<br />
Contractual<br />
Term</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Aggregate</b><br />
<b>Intrinsic</b><br />
<b>Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2" align="center"><b>(In
years)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Outstanding as of December 31, 2014</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,008,574</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6.65</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Granted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">992,505</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">39.37</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Exercised</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(410,701</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1.95</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Forfeited</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(35,268</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">32.41</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Outstanding as of December 31, 2015</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,555,110</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19.76</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">7.9</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,918</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Options vested and expected to vest as of December 31,
2015</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,555,110</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19.76</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">7.9</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,918</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Options exercisable as of December 31, 2015</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">995,324</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">5.60</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6.5</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,243</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
992505
No
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Impairment of Long-Lived Assets</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
Long-lived assets consist of property and equipment. Long-lived
assets to be held and used are tested for recoverability whenever
events or changes in business circumstances indicate that the
carrying amount of the assets may not be fully recoverable. Factors
that the Company considers in deciding when to perform an
impairment review include significant underperformance of the
business in relation to expectations, significant negative industry
or economic trends, and significant changes or planned changes in
the use of the assets. If an impairment review is performed to
evaluate a long-lived asset for recoverability, the Company
compares forecasts of undiscounted cash flows expected to result
from the use and eventual disposition of the long-lived asset to
its carrying value. An impairment loss would be recognized when
estimated undiscounted future cash flows expected to result from
the use of an asset are less than its carrying amount. The
impairment loss would be based on the excess of the carrying value
of the impaired asset over its fair value, determined based on
discounted cash flows. To date, the Company has not recorded any
impairment losses on long-lived assets.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Changes in the valuation allowance for deferred tax assets during
the years ended December 31, 2015, 2014 and 2013 related primarily
to the increase in net operating loss carryforwards, capitalized
research and development expenses and tax credit carryforwards and
were as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="70%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Valuation allowance as of beginning of year</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">42,398</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">27,831</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">22,229</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Decreases recorded as benefit to income tax provision</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Increases recorded to income tax provision</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">32,143</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">14,567</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5,602</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Valuation allowance as of end of year</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">74,541</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">42,398</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">27,831</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>10. Commitments and Contingencies</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Leases</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company has a lease for office space in Boston, Massachusetts,
effective as of July 28, 2014, with a term expiring
July 31, 2017 and an option to extend the lease for three
additional years. In March 2015, the Company entered into an
operating lease for additional office space in Boston,
Massachusetts, effective as of April 15, 2015, with a term
expiring on July 31, 2017, and two options to extend the lease
for three additional years each. In October 2015, the Company
entered into an operating lease for office space in San Diego,
California, effective as of October 1, 2015, with a term
expiring on September 30, 2019, and an option to extend the
lease for five additional years.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Future minimum lease payments for its operating leases as of
December 31, 2015 were as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="68%" align="center" border="0">
<tr>
<td width="89%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap">
<p style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-BOTTOM: rgb(0,0,0) 1pt solid; WIDTH: 95.55pt">
<b>Years Ending December 31,</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2016</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">432</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2017</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">292</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2018</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">106</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2019</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">82</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">912</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
During the years ended December 31, 2015, 2014 and 2013, the
Company recognized $326, $160 and $105, respectively, of rental
expense related to office space.</p>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Intellectual Property Licenses</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company has acquired exclusive rights to develop patented
compounds and related know-how for beloranib under two licensing
agreements with two third parties in the course of its research and
development activities. The licensing rights obligate the Company
to make payments to the licensors for license fees, milestones,
license maintenance fees and royalties. The Company is also
responsible for patent prosecution costs. Related to these license
agreements, the Company recorded research and development expenses
in its consolidated statements of operations as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="84%" align="center" border="0">
<tr>
<td width="74%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended
December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
License, milestone, and license maintenance fees</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">7,019</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">7,019</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of December 31, 2015, the Company is obligated to make
additional milestone payments of up to $12,250 upon reaching
certain pre-commercialization milestones, such as clinical trials
and government approvals (including the U.S. Food and Drug
Administration (“FDA”), approval of a New Drug
Application (“NDA”), and up to $12,500 upon reaching
certain product commercialization milestones. Under one of the
license agreements, the Company is also obligated to pay up to
$1,250 with respect to each subsequent licensed product, if any,
that is a new chemical entity. In addition, the Company will owe
single-digit royalties on sales of commercial products developed
using these licensed technologies, if any.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
During the year ended December 31, 2014, the Company recorded
expenses of $7,019 relating to milestones achieved in September
2014 upon the initiation of a first Phase 3 clinical trial
including the cost of the issuance of common stock valued at
$3,569. There were no milestones achieved during the years ended
December 31, 2015 or 2013. The Company is also obligated to
pay to the licensors a percentage of fees received if and when the
Company sublicenses the technology. As of December 31, 2015,
the Company has not yet developed a commercial product using the
licensed technologies and it has not entered into any sublicense
agreements for the technologies.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Indemnification Agreements</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In the ordinary course of business, the Company may provide
indemnification of varying scope and terms to vendors, lessors,
business partners, and other parties with respect to certain
matters including, but not limited to, losses arising out of breach
of such agreements or from intellectual property infringement
claims made by third parties. In addition, the Company has entered
into indemnification agreements with members of its board of
directors that will require the Company, among other things, to
indemnify them against certain liabilities that may arise by reason
of their status or service as directors or officers. The maximum
potential amount of future payments the Company could be required
to make under these indemnification agreements is, in many cases,
unlimited. To date, the Company has not incurred any material costs
as a result of such indemnifications. The Company does not believe
that the outcome of any claims under indemnification arrangements
will have a material effect on its financial position, results of
operations or cash flows, and it has not accrued any liabilities
related to such obligations in its consolidated financial
statements as of December 31, 2015.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Legal Proceedings</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company accrues a liability for legal contingencies when it
believes that it is both probable that a liability has been
incurred and that the Company can reasonably estimate the amount of
the loss. The Company reviews these accruals and adjusts them to
reflect ongoing negotiations, settlements, rulings, advice of legal
counsel and other relevant information. To the extent new
information is obtained and the views on the probable outcomes of
claims, suits, assessments, investigations or legal proceedings
change, changes in the Company’s accrued liabilities would be
recorded in the period in which such determination is made. In
addition, in accordance with the relevant authoritative guidance,
for any matters in which the likelihood of material loss is at
least reasonably possible, the Company will provide disclosure of
the possible loss or range of loss. If a reasonable estimate cannot
be made, however, the Company will provide disclosure to that
effect. The Company expenses legal costs as they are incurred.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On October 21, 2015, a purported stockholder of the Company filed a
putative class action lawsuit in the U.S. District Court for the
District of Massachusetts, against the Company and Thomas E.
Hughes, captioned Aviad Bessler v. Zafgen, Inc. and Thomas E.
Hughes, No. 1:15-cv-13618. An amended complaint was filed on
February 22, 2016. The amended complaint alleges violations of
Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and
SEC Rule 10b-5 based on allegedly false and misleading statements
and omissions regarding the Company’s clinical trials for its
drug beloranib. The lawsuit seeks, among other things, unspecified
compensatory damages in connection with the Company’s
allegedly inflated stock price between June 19, 2014 and October
16, 2015, as a result of those allegedly false and misleading
statements, as well as punitive damages, interest, attorneys’
fees and costs. The Company has not yet filed a responsive
pleading. Since an estimate of the possible loss or range of loss
cannot be made at this time, no accruals have been recorded as of
December 31, 2015.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company may periodically become subject to other legal
proceedings and claims arising in connection with ongoing business
activities, including claims or disputes related to patents that
have been issued or that are pending in the field of research on
which the Company is focused. Other than the above action, the
Company is not aware of any other material claims as of December
31, 2015.</p>
</div>
1.95
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following tables summarize the Company’s cash equivalents
and marketable securities as of December 31, 2015 and
2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="53%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2015</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Total</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Quoted<br />
Prices in<br />
Active<br />
Markets<br />
(Level 1)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Other<br />
Observable<br />
Inputs<br />
(Level 2)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Unobservable<br />
Inputs<br />
(Level 3)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Cash equivalents:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Money market funds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,999</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,999</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,697</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,697</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total cash equivalents</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">25,927</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,696</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Marketable securities:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">125,516</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">125,516</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">19,468</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">4,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">149,484</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Total cash equivalents and marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">175,411</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">13,231</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">162,180</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="92%" align="center" border="0">
<tr>
<td width="55%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="14" align="center"><b>December 31, 2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Total</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Quoted<br />
Prices in<br />
Active<br />
Markets<br />
(Level 1)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Other<br />
Observable<br />
Inputs<br />
(Level 2)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Significant<br />
Unobservable<br />
Inputs<br />
(Level 3)</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Cash equivalents:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Money market funds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">14,742</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">14,742</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total cash equivalents</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">42,509</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">14,742</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">27,767</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Marketable securities:</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
U.S. government securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">34,191</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">34,191</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Corporate bonds</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">22,168</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">22,168</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Commercial paper</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,000</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Total marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">57,359</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">57,359</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Total cash equivalents and marketable securities</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">99,868</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">14,742</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">85,126</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap">$</td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
</div>
28.97
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Accounting for Stock-Based Compensation</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company measures all stock options and other stock-based awards
granted to employees and directors at the fair value on the date of
the grant using the Black-Scholes option-pricing model. The fair
value of the awards is recognized as expense, net of estimated
forfeitures, over the requisite service period, which is generally
the vesting period of the respective award. The straight-line
method of expense recognition is applied to all awards with
service-only conditions.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
For stock-based awards granted to consultants and nonemployees,
compensation expense is recognized over the period during which
services are rendered by such consultants and nonemployees until
completed. At the end of each financial reporting period prior to
completion of the service, the fair value of these awards is
re-measured using the then-current fair value of the
Company’s common stock and updated assumption inputs in the
Black-Scholes option-pricing model.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company classifies stock-based compensation expense in its
consolidated statement of operations and comprehensive loss in the
same manner in which the award recipient’s payroll costs are
classified or in which the award recipients’ service payments
are classified.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company recognizes compensation expense for only the portion of
awards that are expected to vest. In developing a forfeiture rate
estimate, the Company has considered its historical experience to
estimate pre-vesting forfeitures for service-based awards.</p>
</div>
2015-12-31
0.010
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>7. Stockholders’ Equity</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On June 5, 2014, the Company effected a 1-for-6.28 reverse
stock split of its issued and outstanding shares of common stock
and a proportional adjustment to the existing conversion ratios for
each series of redeemable convertible preferred stock. Accordingly,
all share and per share amounts for all periods presented in these
consolidated financial statements and notes thereto have been
adjusted retroactively, where applicable, to reflect this reverse
stock split and adjustment of the redeemable convertible preferred
stock conversion ratios.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On June 24, 2014, the Company completed an IPO of its common
stock, which resulted in the sale of 6,900,000 shares at a price of
$16.00 per share. The Company received net proceeds from the IPO of
$102,672 based upon the price of $16.00 per share and after
deducting underwriting discounts and commissions paid by the
Company. The Company also incurred offering costs of $2,508 related
to the IPO.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Upon closing of the IPO, all outstanding shares of the
Company’s redeemable convertible preferred stock were
converted into 15,077,621 shares of common stock.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On January 28, 2015, the Company completed a follow-on
offering of its common stock, which resulted in the sale of
3,942,200 shares at a price of $35.00 per share. The Company
received net proceeds from the follow-on offering of $130,044 based
upon the price of $35.00 per share after deducting underwriting
discounts and commissions. The Company also incurred offering costs
of $473 related to the follow-on offering.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of December 31, 2015 and 2014, the Company’s
Certificate of Incorporation, as amended and restated, authorizes
the Company to issue 5,000,000 shares of $0.001 par value preferred
stock. The rights, preferences, restrictions, qualifications and
limitations of such stock are to be determined by the
Company’s board of directors.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of December 31, 2015 and 2014, the Company’s
Certificate of Incorporation, as amended and restated, authorizes
the Company to issue 115,000,000 shares of $0.001 par value common
stock.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Use of Estimates</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The preparation of financial statements in conformity with GAAP
requires management to make estimates and assumptions that affect
the reported amounts of assets and liabilities, the disclosure of
contingent assets and liabilities at the date of the consolidated
financial statements, and the reported amounts of expenses during
the reporting periods. Significant estimates and assumptions
reflected in these consolidated financial statements include, but
are not limited to, the accrual of research and development
expenses and the valuation of common stock prior to the IPO and
stock-based awards. Estimates are periodically reviewed in light of
changes in circumstances, facts and experience. Actual results
could differ from the Company’s estimates.</p>
</div>
410701
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Cash Equivalents</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company considers all short-term, highly liquid investments
with original maturities of ninety days or less at acquisition date
to be cash equivalents. Cash equivalents, which consist of money
market funds, U.S. government securities, corporate bonds, and
commercial paper, are stated at fair value.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>8. Stock-Based Awards</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Stock Option Plans   </b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company’s Amended and Restated 2006 Stock Option Plan
(the “2006 Plan”) provided for the Company to sell or
issue common stock or restricted common stock, or to grant
incentive stock options or nonqualified stock options for the
purchase of common stock, to employees, members of the board of
directors and consultants of the Company. The 2006 Plan was
administered by the board of directors, or at the discretion of the
board of directors, by a committee of the board. The exercise
prices, vesting and other restrictions were determined at the
discretion of the board of directors, or a committee of the board
of directors if so delegated, except that the exercise price per
share of stock options could not be less than 100% of the fair
market value of the share of common stock on the date of grant and
the term of stock option could not be greater than ten years. The
total number of shares of common stock that could have been issued
under the 2006 Plan was 1,889,150 shares. Upon closing of the
Company’s IPO, 168,221 shares reserved and not then subject
to outstanding options were transferred to the 2014 Stock Option
and Incentive Plan, and no further awards will be made under the
2006 Plan.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On June 5, 2014, the Company’s stockholders approved the
2014 Stock Option and Incentive Plan (the “2014 Stock Option
Plan”), which became effective upon the completion of the IPO
of the Company’s shares of common stock in June 2014. The
2014 Stock Option Plan provides for the grant of stock options,
stock appreciation rights, restricted stock awards, restricted
stock units, unrestricted stock awards, performance-share awards,
cash-based awards and dividend equivalent rights. The number of
shares initially reserved for issuance under the 2014 Stock Option
Plan is 2,168,221 shares of common stock and may be increased by
the number of shares under the 2006 Plan that are not needed to
fulfill the Company’s obligations for awards issued under the
2006 Plan as a result of forfeiture, expiration, cancellation,
termination or net issuances of awards thereunder. The number of
shares of common stock that may be issued under the 2014 Stock
Option Plan is also subject to increase on the first day of each
fiscal year by the lesser of (i) 4% of the Company’s
outstanding shares of common stock as of that date, or (ii) an
amount determined by the board of directors. As of
December 31, 2015, 1,625,761 shares are available for grant
under the 2014 Stock Option Plan, including 915,166 shares
automatically added to the 2014 Stock Option Plan on
January 1, 2015 as a result of a provision in the 2014 Stock
Option Plan.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company generally grants stock-based awards with service
conditions only (“service-based” awards).</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As required by the 2006 Plan and 2014 Stock Option Plan, the
exercise price for stock options granted is not to be less than the
fair value of common shares as of the date of grant. Prior to the
IPO, the value of common stock was determined by the board of
directors by taking into consideration its most recently available
valuation of common shares performed by management and the board of
directors as well as additional factors which might have changed
since the date of the most recent contemporaneous valuation through
the date of grant.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
During the year ended December 31, 2015, the Company granted
stock options for the purchase of 992,505 shares of common stock,
of which options for the purchase of 988,505 shares were granted to
employees and directors and options for the purchase of 4,000
shares were granted to a consultant.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
During the year ended December 31, 2014, the Company granted
stock options for the purchase of 698,642 shares of common stock,
of which options for the purchase of 697,050 shares were granted to
employees and options for the purchase of 1,592 shares were granted
to a consultant.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>2014 Employee Stock Purchase Plan</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
On June 5, 2014, the Company’s stockholders approved the
2014 Employee Stock Purchase Plan (the “ESPP”). A total
of 265,000 shares of common stock were reserved for issuance under
this plan. The ESPP became effective upon the completion of the IPO
of the Company’s shares of common stock. The first offering
period commenced on September 1, 2014 and ended on
December 31, 2014. During 2015 there were two offering
periods, January 1, 2015 through June 30, 2015 and
July 1, 2015 through December 31, 2015. The per share
purchase price for offerings is equal to the lesser of 85% of the
closing market price of the Company’s common stock on the
first day or last day of the offering period. The Company issued
7,540 shares during the year ended December 31, 2015; this was
the first year the Company issued shares from the ESPP. As of
December 31, 2015 and 2014, there are 257,460 and 265,000
shares, respectively, of common stock available for issuance to
participating employees under the ESPP.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The weighted-average fair value of stock purchase rights granted as
part of the ESPP was $11.31 per share for the year ended
December 31, 2015. The fair value was estimated using the
Black-Scholes option-pricing model. During the year ended
December 31, 2015, the Company used a weighted-average
stock-price volatility of approximately 66%, expected option life
assumption of six months and a risk-free interest rate of
0.09%.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Stock Option Valuation</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The fair value of each stock option grant is estimated on the date
of grant using the Black-Scholes option-pricing model. Prior to its
IPO in June 2014, the Company was a private company and lacks
company-specific historical and implied volatility information.
Therefore, the Company estimates its expected stock volatility
based on the historical volatility of a publicly traded set of peer
companies and expects to continue to do so until such time as it
has adequate historical data regarding the volatility of its own
traded stock price. The expected term of the Company’s stock
options has been determined utilizing the “simplified”
method for awards that qualify as “plain-vanilla”
options. The expected term of stock options granted to nonemployees
is equal to the contractual term of the option award. The risk-free
interest rate is determined by reference to the U.S. Treasury yield
curve in effect at the time of grant of the award for time periods
approximately equal to the expected term of the award. Expected
dividend yield is based on the fact that the Company has never paid
cash dividends and does not expect to pay any cash dividends in the
foreseeable future. The assumptions that the Company used to
determine the fair value of the stock options granted to employees
and directors are as follows, presented on a weighted average
basis:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="75%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Risk-free interest rate</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1.75</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1.90</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1.12</td>
<td valign="bottom" nowrap="nowrap">% </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Expected term (in years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6.25</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6.25</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6.25</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Expected volatility</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">87</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">90</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">85</td>
<td valign="bottom" nowrap="nowrap">% </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Expected dividend yield</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0</td>
<td valign="bottom" nowrap="nowrap">% </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The following table summarizes the Company’s stock option
activity since December 31, 2014:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<td width="61%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Shares Issuable<br />
Under Options</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Weighted<br />
Average<br />
Exercise<br />
Price</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Average<br />
Remaining<br />
Contractual<br />
Term</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>Aggregate</b><br />
<b>Intrinsic</b><br />
<b>Value</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2" align="center"><b>(In
years)</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Outstanding as of December 31, 2014</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,008,574</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6.65</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Granted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">992,505</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">39.37</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Exercised</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(410,701</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">1.95</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Forfeited</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(35,268</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">32.41</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Outstanding as of December 31, 2015</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,555,110</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19.76</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">7.9</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,918</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Options vested and expected to vest as of December 31,
2015</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,555,110</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">19.76</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">7.9</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,918</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
<b>Options exercisable as of December 31, 2015</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">995,324</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">5.60</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6.5</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,243</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The aggregate intrinsic value of stock options is calculated as the
difference between the exercise price of the stock options and the
fair value of the Company’s common stock for those stock
options that had exercise prices lower than the fair value of the
Company’s common stock. The aggregate intrinsic value of
stock options exercised was $13,949 and $195 during the years ended
December 31, 2015 and 2014, respectively.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company received cash proceeds from the exercise of stock
options of $799 and $3 during the years ended December 31,
2015 and 2014, respectively.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The weighted average grant-date fair value of stock options granted
to employees and directors during the years ended December 31,
2015, 2014 and 2013 was $28.97, $11.73 and $1.83 per share,
respectively.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of December 31, 2015 and 2014, there were outstanding
unvested service-based stock options held by nonemployees for the
purchase of 9,363 and 13,205 shares of common stock, respectively.
Additionally as of December 31, 2014, there were outstanding
unvested performance-based stock options held by nonemployees for
the purchase of 796 shares of common stock.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Restricted Stock Awards</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The 2006 Plan provides for the award of restricted stock awards.
The Company has granted restricted stock awards with time-based
vesting conditions. Unvested shares of restricted stock awards may
not be sold or transferred by the holder. These restrictions lapse
according to the time-based vesting conditions of each award. The
Company values restricted stock awards on the grant-date using the
grant-date market price of the Company’s common stock.</p>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
There were no restricted stock awards that vested in the years
ended December 31, 2015 and 2014. The aggregate intrinsic
value of restricted stock awards that vested during the year ended
December 31, 2013 was $38. The aggregate intrinsic value of
restricted stock awards is calculated as the fair value of the
Company’s common stock on the date it vests and is released.
The Company did not grant any restricted stock awards during the
years ended December 31, 2015, 2014 or 2013. As of
December 31, 2015, 2014 and 2013, there were no unvested
restricted stock awards subject to repurchase.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Restricted Stock Units</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The 2014 Stock Option Plan provides for the award of restricted
stock units. The Company has granted restricted stock units with
time-based vesting conditions. The restrictions lapse according to
the time based vesting conditions of each award. The Company values
restricted stock units on the grant-date using the grant-date
market price of the Company’s common stock.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The aggregate intrinsic value of restricted stock units that vested
during the year ended December 31, 2015 was $115. There were
no restricted stock units that vested in the years ended
December 31, 2014 or 2013. The aggregate intrinsic value of
restricted stock units is calculated as the fair value of the
Company’s common stock on the date it vests and is released.
During the year ended December 31, 2015, the Company granted
4,769 restricted stock units, all of which vested during 2015, at a
weighted average grant-date fair value of $34.46. The Company did
not grant any restricted stock units during the years ended
December 31, 2014 or 2013. As of December 31, 2015, 2014
and 2013, there were no unvested restricted stock units
outstanding.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Stock-based Compensation</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company recorded stock-based compensation expense related to
stock options and restricted common stock in the following expense
categories within its consolidated statements of operations:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="3%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended
December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Research and development</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">2,930</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">490</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">176</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
General and administrative</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">5,652</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1,063</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">219</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">
         8,582</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">
         1,553</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">
         395</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
As of December 31, 2015, the Company had an aggregate of
$27,515 of unrecognized stock-based compensation cost, which is
expected to be recognized over a weighted average period of 2.6
years.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Net Income (Loss) Per Share</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Upon the closing of the Company’s IPO in June 2014, all of
the Company’s outstanding redeemable convertible preferred
shares were converted into shares of common stock. Prior to this
conversion, the Company followed the two-class method when
computing net income (loss) per share as the Company had issued
shares that meet the definition of participating securities. The
two-class method determines net income (loss) per share for each
class of common and participating securities according to dividends
declared or accumulated and participation rights in undistributed
earnings. The two-class method requires income available to common
stockholders for the period to be allocated between common and
participating securities based upon their respective rights to
receive dividends as if all income for the period had been
distributed. The Company’s redeemable convertible preferred
shares contractually entitled the holders of such shares to
participate in dividends, but did not contractually require the
holders of such shares to participate in losses of the Company.
Accordingly, the two-class method did not apply for periods in
which the Company reported a net loss or a net loss attributable to
common stockholders resulting from dividends or accretion related
to its redeemable convertible preferred shares.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Basic net income (loss) per share attributable to common
stockholders is computed by dividing the net income (loss)
attributable to common stockholders by the weighted average number
of common shares outstanding for the period. Diluted net income
(loss) per share attributable to common stockholders is computed by
dividing the diluted net income (loss) attributable to common
stockholders by the weighted average number of common shares,
including potential dilutive common shares assuming the dilutive
effect of outstanding stock options and unvested restricted common
shares, as determined using the treasury stock method. For periods
in which the Company has reported net losses, diluted net loss per
common share attributable to common stockholders is the same as
basic net loss per common share attributable to common
stockholders, since dilutive common shares are not assumed to have
been issued if their effect is antidilutive.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Recently Issued and Adopted Accounting Pronouncements</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In August 2014, the FASB issued ASU No. 2014-15, <i>Presentation of Financial
Statements—Going Concern</i>. The new guidance addresses
management’s responsibility to evaluate whether there is
substantial doubt about an entity’s ability to continue as a
going concern and to provide related footnote disclosures.
Management’s evaluation should be based on relevant
conditions and events that are known and reasonably knowable at the
date that the financial statements are issued. The standard will be
effective for the first interim period within annual reporting
periods beginning after December 15, 2016. Early adoption is
permitted. The Company is evaluating the effect that this guidance
will have on its consolidated financial statements.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In November 2015, the FASB issued ASU No. 2015-17, <i>Balance Sheet
Classification of Deferred Taxes.</i> This guidance requires
companies to classify all deferred tax assets and liabilities as
noncurrent on the balance sheet instead of separating deferred
taxes into current and noncurrent amounts. This guidance allows for
adoption on either a prospective or retrospective basis and will be
effective on January 1, 2017. Early adoption is permitted. The
Company has elected to early adopt this guidance on a prospective
basis and, as a result, prior consolidated balance sheets were not
retrospectively adjusted. The adoption of this guidance did not
have a material impact on the Company’s consolidated
financial statements and related disclosures.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In February 2016, the FASB issued ASU No. 2016-02, <i>Leases</i>. This guidance
will require that lease arrangements longer than 12 months result
in an entity recognizing an asset and liability equal to the
present value of the lease payments in the statement of financial
position. This guidance is effective for annual periods beginning
after December 15, 2018, and interim periods therein. This standard
requires a modified retrospective transition approach for all
leases existing at, or entered into after, the date of initial
application, with an option to use certain transition relief. Early
adoption is permitted. The Company is evaluating the effect that
this guidance will have on its consolidated financial
statements.</p>
</div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Future minimum lease payments for its operating leases as of
December 31, 2015 were as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="68%" align="center" border="0">
<tr>
<td width="89%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom" nowrap="nowrap">
<p style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-BOTTOM: rgb(0,0,0) 1pt solid; WIDTH: 95.55pt">
<b>Years Ending December 31,</b></p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" colspan="2"> </td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2016</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">432</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2017</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">292</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2018</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">106</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
2019</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">82</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top"></td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">912</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>2. Summary of Significant Accounting Policies</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Use of Estimates</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The preparation of financial statements in conformity with GAAP
requires management to make estimates and assumptions that affect
the reported amounts of assets and liabilities, the disclosure of
contingent assets and liabilities at the date of the consolidated
financial statements, and the reported amounts of expenses during
the reporting periods. Significant estimates and assumptions
reflected in these consolidated financial statements include, but
are not limited to, the accrual of research and development
expenses and the valuation of common stock prior to the IPO and
stock-based awards. Estimates are periodically reviewed in light of
changes in circumstances, facts and experience. Actual results
could differ from the Company’s estimates.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Cash Equivalents</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company considers all short-term, highly liquid investments
with original maturities of ninety days or less at acquisition date
to be cash equivalents. Cash equivalents, which consist of money
market funds, U.S. government securities, corporate bonds, and
commercial paper, are stated at fair value.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Concentration of Credit Risk and of Significant
Suppliers</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Financial instruments that potentially expose the Company to
concentrations of credit risk consist primarily of cash and cash
equivalents and marketable securities. The Company has all cash and
cash equivalents and marketable securities balances at two
accredited financial institutions in amounts that exceed federally
insured limits. The Company does not believe that it is subject to
unusual credit risk beyond the normal credit risk associated with
commercial banking relationships.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company is dependent on third-party manufacturers to supply
products for research and development activities in its programs.
In particular, the Company relies and expects to continue to rely
on a small number of manufacturers to supply it with its
requirements for the active pharmaceutical ingredients and
formulated drugs related to these programs. These programs could be
adversely affected by a significant interruption in the supply of
active pharmaceutical ingredients and formulated drugs.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Marketable securities</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Marketable securities consist of investments with original
maturities greater than ninety days. The Company has classified its
investments with maturities beyond one year as short term, based on
their highly liquid nature and because such marketable securities
represent the investment of cash that is available for current
operations. The Company considers its investment portfolio of
investments available-for-sale. Accordingly, these investments are
recorded at fair value, which is based on quoted market prices.
Unrealized gains and losses are reported as a component of
accumulated other comprehensive income (loss) in
stockholders’ equity (deficit). Realized gains and losses and
declines in value judged to be other than temporary are included as
a component of other income (expense), net based on the specific
identification method. When determining whether a decline in value
is other than temporary, the Company considers various factors,
including whether the Company has the intent to sell the security,
and whether it is more likely than not that the Company will be
required to sell the security prior to recovery of its amortized
cost basis. Fair value is determined based on quoted market
prices.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Deferred Offering Costs</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company capitalizes certain legal, accounting and other
third-party fees that are directly associated with in-process
equity financings as other assets until such financings are
consummated. After consummation of the equity financing, these
costs are recorded in stockholders’ equity (deficit) as a
reduction of additional paid-in capital generated as a result of
the offering or as a reduction to the carrying value of preferred
stock issued. As of December 31, 2014, the Company recorded
$148 of deferred offering costs, included in other assets in the
accompanying consolidated balance sheet, in contemplation of the
Company’s follow-on offering of its common stock, which
closed in January 2015.</p>
<p style="MARGIN-BOTTOM: 0px; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 1px 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18px; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Property and Equipment</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Property and equipment are stated at cost less accumulated
depreciation. Depreciation expense is recognized using the
straight-line method over a five-year estimated useful life for
equipment, furniture and fixtures and office equipment. Leasehold
improvements are amortized over the shorter of the asset life or
the term of the lease agreement. Expenditures for repairs and
maintenance of assets are charged to expense as incurred. Upon
retirement or sale, the cost and related accumulated depreciation
of assets disposed of are removed from the accounts and any
resulting gain or loss is included in loss from operations.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Impairment of Long-Lived Assets</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Long-lived assets consist of property and equipment. Long-lived
assets to be held and used are tested for recoverability whenever
events or changes in business circumstances indicate that the
carrying amount of the assets may not be fully recoverable. Factors
that the Company considers in deciding when to perform an
impairment review include significant underperformance of the
business in relation to expectations, significant negative industry
or economic trends, and significant changes or planned changes in
the use of the assets. If an impairment review is performed to
evaluate a long-lived asset for recoverability, the Company
compares forecasts of undiscounted cash flows expected to result
from the use and eventual disposition of the long-lived asset to
its carrying value. An impairment loss would be recognized when
estimated undiscounted future cash flows expected to result from
the use of an asset are less than its carrying amount. The
impairment loss would be based on the excess of the carrying value
of the impaired asset over its fair value, determined based on
discounted cash flows. To date, the Company has not recorded any
impairment losses on long-lived assets.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Research and Development Costs</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Research and development costs are expensed as incurred. Included
in research and development expenses are wages, stock-based
compensation and benefits of employees, third-party license fees
and milestones and other operational costs related to the
Company’s research and development activities, including
facility-related expenses and external costs of outside vendors
engaged to conduct pre-clinical studies, manufacturing activities,
and clinical trials. The Company records research and development
expenses net of any research and development tax incentives the
Company is entitled to receive from government authorities.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Research Contract Costs and Accruals</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company has entered into various research and development
contracts with research institutions and other companies both
inside and outside of the United States. These agreements are
generally cancelable, and related payments are recorded as research
and development expenses as incurred. The Company records accruals
for estimated ongoing research costs. When evaluating the adequacy
of the accrued liabilities, the Company analyzes progress of the
studies, including the phase or completion of events, invoices
received and contracted costs. Significant judgments and estimates
are made in determining the accrued balances at the end of any
reporting period. Actual results could differ from the
Company’s estimates. The Company’s historical accrual
estimates have not been materially different from the actual
costs.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Patent Costs</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
All patent-related costs incurred in connection with filing and
prosecuting patent applications are recorded as general and
administrative expenses as incurred, as recoverability of such
expenditures is uncertain.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Accounting for Stock-Based Compensation</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company measures all stock options and other stock-based awards
granted to employees and directors at the fair value on the date of
the grant using the Black-Scholes option-pricing model. The fair
value of the awards is recognized as expense, net of estimated
forfeitures, over the requisite service period, which is generally
the vesting period of the respective award. The straight-line
method of expense recognition is applied to all awards with
service-only conditions.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
For stock-based awards granted to consultants and nonemployees,
compensation expense is recognized over the period during which
services are rendered by such consultants and nonemployees until
completed. At the end of each financial reporting period prior to
completion of the service, the fair value of these awards is
re-measured using the then-current fair value of the
Company’s common stock and updated assumption inputs in the
Black-Scholes option-pricing model.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company classifies stock-based compensation expense in its
consolidated statement of operations and comprehensive loss in the
same manner in which the award recipient’s payroll costs are
classified or in which the award recipients’ service payments
are classified.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company recognizes compensation expense for only the portion of
awards that are expected to vest. In developing a forfeiture rate
estimate, the Company has considered its historical experience to
estimate pre-vesting forfeitures for service-based awards.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Income Taxes</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company accounts for income taxes using the asset and liability
method, which requires the recognition of deferred tax assets and
liabilities for the expected future tax consequences of events that
have been recognized in the consolidated financial statements or in
the Company’s tax returns. Deferred taxes are determined
based on the difference between the financial statement and tax
basis of assets and liabilities using enacted tax rates in effect
in the years in which the differences are expected to reverse.
Changes in deferred tax assets and liabilities are recorded in the
provision for income taxes. The Company assesses the likelihood
that its deferred tax assets will be recovered from future taxable
income and, to the extent it believes, based upon the weight of
available evidence, that it is more likely than not that all or a
portion of deferred tax assets will not be realized, a valuation
allowance is established through a charge to income tax expense.
Potential for recovery of deferred tax assets is evaluated by
estimating the future taxable profits expected and considering
prudent and feasible tax planning strategies.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company accounts for uncertainty in income taxes recognized in
the consolidated financial statements by applying a two-step
process to determine the amount of tax benefit to be recognized.
First, the tax position must be evaluated to determine the
likelihood that it will be sustained upon external examination by
the taxing authorities. If the tax position is deemed
more-likely-than-not to be sustained, the tax position is then
assessed to determine the amount of benefit to recognize in the
consolidated financial statements. The amount of the benefit that
may be recognized is the largest amount that has a greater than 50%
likelihood of being realized upon ultimate settlement. The
provision for income taxes includes the effects of any resulting
tax reserves, or unrecognized tax benefits, that are considered
appropriate as well as the related net interest and penalties.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Segment Data</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company manages its operations as a single segment for the
purposes of assessing performance and making operating decisions.
The Company’s singular focus is on advancing novel
therapeutics for patients suffering from severe obesity and
obesity-related disorders. No revenue has been generated since
inception, and all tangible assets are held in the United
States.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Comprehensive Loss</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Comprehensive loss includes net loss as well as other changes in
stockholders’ equity (deficit) that result from transactions
and economic events other than those with stockholders. For the
years ended December 31, 2015 and 2014, the Company’s
only element of other comprehensive loss was unrealized loss on
marketable securities. For the year ended December 31, 2013,
there was no difference between net loss and comprehensive
loss.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Net Income (Loss) Per Share</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Upon the closing of the Company’s IPO in June 2014, all of
the Company’s outstanding redeemable convertible preferred
shares were converted into shares of common stock. Prior to this
conversion, the Company followed the two-class method when
computing net income (loss) per share as the Company had issued
shares that meet the definition of participating securities. The
two-class method determines net income (loss) per share for each
class of common and participating securities according to dividends
declared or accumulated and participation rights in undistributed
earnings. The two-class method requires income available to common
stockholders for the period to be allocated between common and
participating securities based upon their respective rights to
receive dividends as if all income for the period had been
distributed. The Company’s redeemable convertible preferred
shares contractually entitled the holders of such shares to
participate in dividends, but did not contractually require the
holders of such shares to participate in losses of the Company.
Accordingly, the two-class method did not apply for periods in
which the Company reported a net loss or a net loss attributable to
common stockholders resulting from dividends or accretion related
to its redeemable convertible preferred shares.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Basic net income (loss) per share attributable to common
stockholders is computed by dividing the net income (loss)
attributable to common stockholders by the weighted average number
of common shares outstanding for the period. Diluted net income
(loss) per share attributable to common stockholders is computed by
dividing the diluted net income (loss) attributable to common
stockholders by the weighted average number of common shares,
including potential dilutive common shares assuming the dilutive
effect of outstanding stock options and unvested restricted common
shares, as determined using the treasury stock method. For periods
in which the Company has reported net losses, diluted net loss per
common share attributable to common stockholders is the same as
basic net loss per common share attributable to common
stockholders, since dilutive common shares are not assumed to have
been issued if their effect is antidilutive.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 18pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>Recently Issued and Adopted Accounting Pronouncements</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In August 2014, the FASB issued ASU No. 2014-15, <i>Presentation of Financial
Statements—Going Concern</i>. The new guidance addresses
management’s responsibility to evaluate whether there is
substantial doubt about an entity’s ability to continue as a
going concern and to provide related footnote disclosures.
Management’s evaluation should be based on relevant
conditions and events that are known and reasonably knowable at the
date that the financial statements are issued. The standard will be
effective for the first interim period within annual reporting
periods beginning after December 15, 2016. Early adoption is
permitted. The Company is evaluating the effect that this guidance
will have on its consolidated financial statements.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In November 2015, the FASB issued ASU No. 2015-17, <i>Balance Sheet
Classification of Deferred Taxes.</i> This guidance requires
companies to classify all deferred tax assets and liabilities as
noncurrent on the balance sheet instead of separating deferred
taxes into current and noncurrent amounts. This guidance allows for
adoption on either a prospective or retrospective basis and will be
effective on January 1, 2017. Early adoption is permitted. The
Company has elected to early adopt this guidance on a prospective
basis and, as a result, prior consolidated balance sheets were not
retrospectively adjusted. The adoption of this guidance did not
have a material impact on the Company’s consolidated
financial statements and related disclosures.</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
In February 2016, the FASB issued ASU No. 2016-02, <i>Leases</i>. This guidance
will require that lease arrangements longer than 12 months result
in an entity recognizing an asset and liability equal to the
present value of the lease payments in the statement of financial
position. This guidance is effective for annual periods beginning
after December 15, 2018, and interim periods therein. This standard
requires a modified retrospective transition approach for all
leases existing at, or entered into after, the date of initial
application, with an option to use certain transition relief. Early
adoption is permitted. The Company is evaluating the effect that
this guidance will have on its consolidated financial
statements.</p>
</div>
ZFGN
26756079
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The assumptions that the Company used to determine the fair value
of the stock options granted to employees and directors are as
follows, presented on a weighted average basis:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="75%"></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Risk-free interest rate</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1.75</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1.90</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">1.12</td>
<td valign="bottom" nowrap="nowrap">% </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Expected term (in years)</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6.25</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6.25</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6.25</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Expected volatility</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">87</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">90</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">85</td>
<td valign="bottom" nowrap="nowrap">% </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Expected dividend yield</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0</td>
<td valign="bottom" nowrap="nowrap">% </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">0</td>
<td valign="bottom" nowrap="nowrap">% </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
<b>9. Net Loss Per Share</b></p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 6pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Basic and diluted net loss per share attributable to common
stockholders was calculated as follows:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<td width="67%"></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="5%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>Year Ended
December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Basic and diluted net loss per share attributable to common
stockholders:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Numerator:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Net loss</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(74,286</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(36,478</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(14,027</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Accretion of redeemable convertible preferred stock to redemption
value</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom" nowrap="nowrap"> </td>
<td valign="bottom" nowrap="nowrap" align="right">
—  </td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(92</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(213</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 7em; TEXT-INDENT: -1em">
Net loss attributable to common stockholders</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(74,286</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(36,570</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(14,240</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Denominator:</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"> </td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 5em; TEXT-INDENT: -1em">
Weighted average common shares outstanding, basic and diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">26,756,079</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">12,189,155</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom"> </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right"> 729,001</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 3em; TEXT-INDENT: -1em">
Net loss per share attributable to common stockholders, basic and
diluted</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(2.78</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(3.00</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom"> </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">(19.53</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom"> </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
The Company excluded the following common stock equivalents,
outstanding as of December 31, 2015, 2014 and 2013, from the
computation of diluted net loss per share attributable to common
stockholders for the years ended December 31, 2015, 2014 and
2013 because they had an anti-dilutive impact due to the net loss
attributable to common stockholders incurred for the periods:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<table style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="100%" align="center" border="0">
<tr>
<td width="63%"></td>
<td valign="bottom" width="2%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="2%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="2%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="10" align="center"><b>As of December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2013</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Options to purchase common stock</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">
    2,555,110</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">2,008,574</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">  1,310,330</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
<br class="Apple-interchange-newline" /></div>
0.000
P2Y7M6D
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Income Taxes</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company accounts for income taxes using the asset and liability
method, which requires the recognition of deferred tax assets and
liabilities for the expected future tax consequences of events that
have been recognized in the consolidated financial statements or in
the Company’s tax returns. Deferred taxes are determined
based on the difference between the financial statement and tax
basis of assets and liabilities using enacted tax rates in effect
in the years in which the differences are expected to reverse.
Changes in deferred tax assets and liabilities are recorded in the
provision for income taxes. The Company assesses the likelihood
that its deferred tax assets will be recovered from future taxable
income and, to the extent it believes, based upon the weight of
available evidence, that it is more likely than not that all or a
portion of deferred tax assets will not be realized, a valuation
allowance is established through a charge to income tax expense.
Potential for recovery of deferred tax assets is evaluated by
estimating the future taxable profits expected and considering
prudent and feasible tax planning strategies.</p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 12pt; TEXT-INDENT: 4%">
The Company accounts for uncertainty in income taxes recognized in
the consolidated financial statements by applying a two-step
process to determine the amount of tax benefit to be recognized.
First, the tax position must be evaluated to determine the
likelihood that it will be sustained upon external examination by
the taxing authorities. If the tax position is deemed
more-likely-than-not to be sustained, the tax position is then
assessed to determine the amount of benefit to recognize in the
consolidated financial statements. The amount of the benefit that
may be recognized is the largest amount that has a greater than 50%
likelihood of being realized upon ultimate settlement. The
provision for income taxes includes the effects of any resulting
tax reserves, or unrecognized tax benefits, that are considered
appropriate as well as the related net interest and penalties.</p>
</div>
P7Y10M24D
1381000
595000
-74286000
-172000
-74286000
0
584000
8582000
129571000
363000
473000
-73813000
-473000
0
287491000
-172000
438000
-105000
-74458000
-172000
-74286000
-72147000
-2139000
298000
-82000
0
1243000
326000
-22508000
73813000
806000
-92118000
129164000
54618000
144000
3192000
799000
8582000
974000
19195000
13949000
0
130044000
195987000
4914000
62000
70000
32143000
<div>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt">
<b>Research Contract Costs and Accruals</b></p>
<p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%">
The Company has entered into various research and development
contracts with research institutions and other companies both
inside and outside of the United States. These agreements are
generally cancelable, and related payments are recorded as research
and development expenses as incurred. The Company records accruals
for estimated ongoing research costs. When evaluating the adequacy
of the accrued liabilities, the Company analyzes progress of the
studies, including the phase or completion of events, invoices
received and contracted costs. Significant judgments and estimates
are made in determining the accrued balances at the end of any
reporting period. Actual results could differ from the
Company’s estimates. The Company’s historical accrual
estimates have not been materially different from the actual
costs.</p>
</div>
0.060
0
<div>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
Notes payable consist of the following:</p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 12pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 0pt; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">
 </p>
<p style="MARGIN-BOTTOM: 0pt; WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px; COLOR: rgb(0,0,0); FONT: 10pt 'Times New Roman'; WIDOWS: 1; MARGIN-TOP: 12pt; LETTER-SPACING: normal; TEXT-INDENT: 4%; -webkit-text-stroke-width: 0px">
</p>
<table style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; BORDER-COLLAPSE: collapse; TEXT-TRANSFORM: none; WORD-SPACING: 0px; WIDOWS: 1; LETTER-SPACING: normal; TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px" cellspacing="0" cellpadding="0" width="76%" align="center" border="0">
<tr>
<td width="75%"></td>
<td valign="bottom" width="7%"></td>
<td></td>
<td></td>
<td></td>
<td valign="bottom" width="6%"></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="6" align="center"><b>December 31,</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 8pt; FONT-FAMILY: 'Times New Roman'">
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2015</b></td>
<td valign="bottom"> </td>
<td valign="bottom">  </td>
<td style="BORDER-BOTTOM: rgb(0,0,0) 1pt solid" valign="bottom" colspan="2" align="center"><b>2014</b></td>
<td valign="bottom"> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Notes payable</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,119</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">7,500</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Less: current portion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(2,936</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(1,381</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Notes payable, net of current portion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">3,183</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">6,119</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Debt discount, net of accretion</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(36</td>
<td valign="bottom" nowrap="nowrap">) </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">(79</td>
<td valign="bottom" nowrap="nowrap">) </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'" bgcolor="#CCEEFF">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Accretion related to final payment</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">306</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom"> </td>
<td valign="bottom" align="right">137</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 1px solid"> </p>
</td>
<td> </td>
</tr>
<tr style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">
<td valign="top">
<p style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'; MARGIN-LEFT: 1em; TEXT-INDENT: -1em">
Notes payable, net of discount, long term</p>
</td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">3,453</td>
<td valign="bottom" nowrap="nowrap">  </td>
<td valign="bottom">  </td>
<td valign="bottom">$</td>
<td valign="bottom" align="right">6,177</td>
<td valign="bottom" nowrap="nowrap">  </td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
<td valign="bottom">  </td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td valign="bottom">
<p style="BORDER-TOP: rgb(0,0,0) 3px double"> </p>
</td>
<td> </td>
</tr>
</table>
</div>
0.50
0
1014000
974000
2036000
19000
0.035
62000
988505
4000
5652000
2930000
P5Y
P5Y
P5Y
-82000
0.45
1357000
0.45
2555110000
P3Y
2017-07-31
P10Y
1.00
0.04
P6M
Black-Scholes option-pricing model
0.0009
7540
11.31
0.66
2015-01-01
2015-07-01
2015-06-30
2015-12-31
3500000
3500000
2030
2021
2026
2026
0
0
4769
4769
34.46
115000
806000
450000
0
3942200
Company effected a 1-for-6.28 reverse stock split of its issued and outstanding shares of common stock and a proportional adjustment to the existing conversion ratios for each series of redeemable convertible preferred stock.
2902
4000
0
418241
-74286000
0
8582000
129567000
0
974000
-172000
0
-6.18
729391
-4507000
0
4521000
-0.53
25615282
-13472000
0
13240000
-2.96
2178465
-6443000
0
5986000
-0.66
27011960
-17756000
0
17610000
-0.65
22707012
-14689000
0
14361000
-0.73
27138667
-19884000
0
19717000
-0.48
22783817
-10931000
0
10664000
-0.85
27238079
-23174000
0
23246000
0001374690
2015-10-01
2015-12-31
0001374690
2014-10-01
2014-12-31
0001374690
2015-07-01
2015-09-30
0001374690
2014-07-01
2014-09-30
0001374690
2015-04-01
2015-06-30
0001374690
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