Form: EFFECT

Notice of Effectiveness

March 31, 2026

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Notice of Effectiveness

Effectiveness Date: March 31, 2026 5:15 P.M.
Form: S-1
CIK: 0001958777
Company Name: FibroBiologics, Inc.
File Number: 333-294713