Form: EFFECT

Notice of Effectiveness

October 20, 2026

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

Notice of Effectiveness

Effectiveness Date: October 19, 2026
Accession Number: 0001193125-26-420449
Submission Type: POS AM
CIK: 0001958777
Company Name: FibroBiologics, Inc.
File Number: 333-284077