FibroBiologics, Inc. Common Stock (FBLG)
Healthcare
Biotechnology
0.70 $
-2.6%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns FibroBiologics, Inc. Common Stock (FBLG)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 87.8% of the shares are freely tradable; institutional investors hold 12.5%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
12.5%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
12.6%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
87.8%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
2.8%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
5Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Capital Management, LLC | 1.30 | 67,665 | +0.0 | 03/31/2026 |
| Vanguard Group Inc | 1.17 | 1,216,341 | -1.4 | 12/31/2025 |
| Fund Evaluation Group, LLC | 0.99 | 51,794 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 0.57 | 29,609 | -91.5 | 03/31/2026 |
| BlackRock Inc | 0.47 | 24,647 | -94.9 | 03/31/2026 |
| Renaissance Technologies Corp | 0.31 | 15,997 | -93.1 | 03/31/2026 |
| Vanguard Fiduciary Trust Co | 0.12 | 6,380 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 0.77 | 39,896 | +0.0 | 04/30/2026 |
| Vanguard Institutional Extnd Mkt Idx Tr | 0.53 | 27,769 | +0.0 | 04/30/2026 |
| Fidelity Extended Market Index | 0.38 | 19,544 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.