X0508 4 2024-01-17 0001374690 Larimar Therapeutics, Inc. LRMR 0001965014 Shankar Gopi C/O LARIMAR THERAPEUTICS, INC. THREE BALA PLAZA EAST, SUITE 506 BALA CYNWYD PA 19004 0 1 0 0 Chief Development Officer 0 Common Stock 2024-01-17 4 A 0 22500 0.00 A 27500 D Stock Option (Right to Buy) 4.21 2024-01-17 4 A 0 135000 0.00 A 2034-01-17 Common Stock 135000 135000 D Each share is represented by a restricted stock unit ("RSU"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. The option vests 25% on January 17, 2025, with the remaining 75% vesting in equal monthly installments on the last day of each of the 36 calendar months immediately following such date, subject to the Reporting Person's continued service with the Issuer through the applicable vesting date. /s/ Jennifer Johansson, Attorney-in-fact 2024-01-19