0001958777 2026-07-09 2026-07-09 0001958777 1 2026-07-09 2026-07-09 iso4217:USD pure shares S-3 S-3 EX-FILING FEES 0001958777 FibroBiologics, Inc. N/A N/A S-3 FibroBiologics, Inc. false Equity Common stock, par value $0.00001 per share, underlying warrants true 12530613 0.8326 10432988.38 0.0001381 1440.80 10432988.38 1440.80 0.00 0.00 1440.80 (1) Pursuant to Rule 416 under the Securities Act of 1933, as amended, or the Securities Act, this Registration Statement on Form S-3 shall be deemed to cover any additional shares of common stock, par value $0.00001 per share, or the Common Stock, of FibroBiologics, Inc. that may be issued as a result of any stock dividend, stock split, recapitalization or other similar transaction, and any other securities with respect to which the outstanding shares are converted or exchanged. (2) Estimated solely for purposes of calculating the registration fee in accordance with Rule 457(c) under the Securities Act, based on the average of the high and low sales price of Common Stock as reported on the Nasdaq Capital Market on July 8, 2026.