FibroBiologics, Inc. (FBLG) Ownership
FBLG ownership summary
as of October 18, 2026- Institutions
- 15.3% of shares outstanding
- Insiders
- 13.74% of shares outstanding
- Shares outstanding
- 7.1M
- Float
- 5.2M shares available to trade
- Short interest
- 7.87% 522K shares short
- Days to cover
- 2.04 short interest down 21.1% vs prior month
- Institutions 15.25%
- Insiders 13.74%
- Other investors 71.01%
FBLG top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fund Evaluation Group, LLC | 0.74% | 52K | $50,292 | — | June 30, 2026 |
| 2 | Geode Capital Management, LLC | 0.44% | 30K | $29,420 | +690 (+2.3%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 0.40% | 28K | $26,964 | −39,896 (−59.0%) | June 30, 2026 |
| 4 | Qube Research & Technologies | 0.35% | 24K | $23,608 | +24,313 (0.0%) | June 30, 2026 |
| 5 | BlackRock Inc | 0.26% | 18K | $17,709 | −6,409 (−26.0%) | June 30, 2026 |
| 6 | Barclays PLC | 0.10% | 7,243 | $7,033 | +7,243 (0.0%) | June 30, 2026 |
| 7 | Vanguard Fiduciary Trust Co | 0.09% | 6,380 | $6,195 | — | June 30, 2026 |
| 8 | Tower Research Capital LLC | 0.07% | 4,728 | $4,591 | +4,268 (+927.8%) | June 30, 2026 |
| 9 | Advisor Group Holdings, Inc. | 0.03% | 2,404 | $2,334 | +2,250 (+1,461.0%) | June 30, 2026 |
| 10 | Royal Bank of Canada | 0.02% | 1,522 | $1,478 | +1,522 (0.0%) | June 30, 2026 |
| 11 | UBS Group AG | 0.02% | 1,073 | $1,042 | −4,648 (−81.2%) | June 30, 2026 |
| 12 | Western Wealth Management, LLC | <0.01% | 200 | $194 | +200 (0.0%) | March 31, 2026 |
| 13 | Islay Capital Management, LLC | <0.01% | 169 | $164 | — | June 30, 2026 |
| 14 | Coconut Grove Bank | <0.01% | 100 | $97 | +100 (0.0%) | June 30, 2026 |
| 15 | BNP Paribas Arbitrage, SA | <0.01% | 64 | $62 | −2 (−3.0%) | June 30, 2026 |
| 16 | Hanson Mcclain Inc | <0.01% | 13 | $13 | — | June 30, 2026 |
| 17 | Goldman Sachs Asset Management, L.P. | 0.00% | — | — | −10,468 (−100.0%) | March 31, 2026 |
| 18 | Jane Street Group LLC | 0.00% | — | — | −149,763 (−100.0%) | March 31, 2026 |
| 19 | Northern Trust Corp | 0.00% | — | — | −47,674 (−100.0%) | March 31, 2026 |
| 20 | Disciplined Equity Management Inc | 0.00% | — | — | −1,000 (−100.0%) | March 31, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 8 holders added 41K shares and 8 cut 260K.
FBLG top mutual fund and ETF holders
4 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | T. Rowe Price M-A Glb Inc I USD | 4.02% | 280K | $271,880 | +280,000 (0.0%) | August 31, 2026 |
| 2 | Fidelity Extended Market Index | 0.35% | 24K | $23,546 | −130 (−0.5%) | August 31, 2026 |
| 3 | Fidelity Series Total Market Index | 0.04% | 2,571 | $2,496 | — | August 31, 2026 |
| 4 | Fidelity Total Market Index | 0.03% | 2,266 | $2,200 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
FBLG insider transactions
latest 8| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-04 | Hamid Khoja | Buy | $7.60 | 1,500 | $11,400 |
| 2026-03-04 | Pete O'heeron | Buy | $7.60 | 793 | $6,027 |
| 2026-03-03 | Pete O'heeron | Buy | $8.20 | 910 | $7,462 |
| 2026-03-02 | Jason Davis | Buy | $8.20 | 3,500 | $28,700 |
| 2026-03-02 | Pete O'heeron | Buy | $7.00 | 871 | $6,097 |
| 2026-02-27 | Ruben A Garcia | Buy | $6.60 | 2,000 | $13,200 |
| 2025-12-11 | Ruben A Garcia | Buy | $6.80 | 7,000 | $47,600 |
| 2025-05-27 | Hamid Khoja | Buy | $16.80 | 1,000 | $16,800 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
FBLG shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns FBLG
Institutional investors own 15.3% of FibroBiologics's shares and insiders 13.74%. The largest holder is Fund Evaluation Group, LLC with 0.74% of the shares (52K), as of June 30, 2026. Among the top 20 institutions, 8 added shares and 8 reduced their stake in the latest filings. Short interest is 7.87% of the float, or 2.04 days of average trading volume. The share count rose 119.1% since 2022.
Related: FBLG analyst forecast, FBLG key metrics. See the FBLG stock overview for the latest quote and news.
FBLG ownership FAQ
Who owns the most FibroBiologics stock?
The largest shareholders of FibroBiologics are Fund Evaluation Group, LLC (0.74%), Geode Capital Management, LLC (0.44%), Vanguard Capital Management, LLC (0.40%), Qube Research & Technologies (0.35%), BlackRock Inc (0.26%).
What percentage of FibroBiologics is owned by institutions?
Institutions hold 15.3% of FibroBiologics's shares outstanding; insiders hold 13.74%.
Which funds own FibroBiologics?
The largest fund holders of FibroBiologics are T. Rowe Price M-A Glb Inc I USD (4.02%), Fidelity Extended Market Index (0.35%), Fidelity Series Total Market Index (0.04%), Fidelity Total Market Index (0.03%).
What is FibroBiologics's short interest?
522K shares of FibroBiologics were sold short, 7.87% of the float; at the average daily volume it would take 2.04 days to cover.
Are insiders buying or selling FibroBiologics?
Of the latest 8 reported insider transactions in FibroBiologics (since May 27, 2025), 8 were purchases and 0 were sales.
How many shares of FibroBiologics are outstanding?
FibroBiologics has 7.1M shares outstanding, of which 5.2M are in the public float.