FibroBiologics, Inc.
FBLG- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001958777
No open-market purchases or sales by FibroBiologics, Inc. insiders were filed in the last 90 days; 16 institutions reported holding it in 13F filings for Q2 2026, worth $269.6K in total; no superinvestor holds it.
Holders of 5% or more of FBLG
Holders whose latest Schedule 13D or 13G filing reports 5% or more of FibroBiologics, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| O'Heeron Pete | 13G | 18.20%6.95M shares | New | Feb 12, 20251 filing | Feb 12, 2025 | SEC |
| Newlin Michael F. | 13G | 5.58%2.13M shares | New | Jun 6, 20251 filing | Jun 6, 2025 | SEC |
| BlackRock, Inc. | 13G/A | 5.10%1.79M shares | 0.00 ppfrom 5.10% | Jan 29, 20252 filings | Jan 30, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
4 Schedule 13D and 13G filings on FibroBiologics, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jun 6, 20253:13 PM ET | Newlin Michael F. | 13G | 5.58%2.13M shares | New | Aug 9, 2024 | SEC |
| Feb 12, 20254:01 PM ET | O'Heeron Pete | 13G | 18.20%6.95M shares | New | Jan 31, 2024 | SEC |
| Jan 30, 202512:43 PM ET | BlackRock, Inc. | 13G/A | 5.10%1.79M shares | 0.00 ppfrom 5.10% | Dec 31, 2024 | SEC |
| Jan 29, 20254:43 PM ET | BlackRock, Inc. | 13G | 5.10%1.79M shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell FibroBiologics, Inc. shares.
No Form 144 notices for FibroBiologics, Inc. are on file.