0001374690 2026-09-29 2026-09-29 false 0001374690 8-K 2026-09-29 Larimar Therapeutics, Inc. DE 001-36510 20-3857670 Three Bala Plaza East Bala Cynwyd PA 19004 (844) 511-9056 false false false false Common Stock, par value $0.001 per share LRMR NASDAQ false