X0609 4 2026-05-04 0 0001958777 FibroBiologics, Inc. FBLG 0001443533 Davis Jason false C/O FIBROBIOLOGICS, INC. 9350 KIRBY DRIVE., SUITE 300 HOUSTON TX 77054 0 1 0 0 Chief Financial Officer 0 Stock Option (Right to Buy) 1.38 2026-05-04 4 A 0 61607 0 A 2036-05-04 Common Stock 61607 61607 D On May 4, 2026, the reporting person was granted an option to purchase 61,607 shares of common stock. One fourth (1/4th) of the option shares shall vest on the one-year anniversary of the grant date, and the remaining balance of the option shares shall vest in 36 equal consecutive monthly installments thereafter until fully vested so long as the reporting person remains in continuous service through such applicable vesting periods. /s/ Ruben A. Garcia, by Power of Attorney 2026-05-04