Who owns FibroBiologics, Inc., from the filings themselves: stakes over 5% (Schedule 13D/G), the institutional managers reporting the stock each quarter (13F), and the funds holding it (N-PORT).
Investors crossing 5% ownership must disclose it. Schedule 13G filers certify the stake is passive; Schedule 13D is the general form for everyone else — founders, strategic holders, and activists alike. Each entry is the holder's most recent disclosure. Coverage begins with SEC's structured filings from December 18, 2024; a holder appears once they file or amend after that date.
Armistice Capital, LLC: 10.0% · 738,977 shares — Steven Boyd: 10.0% · 738,977 shares
Lind Global Fund III LP: 5.0% · 230,234 shares — Lind Global Partners III LLC: 5.0% · 230,234 shares — EASTON JEFF: 5.0% · 230,234 shares
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See every investor who has disclosed crossing 5% of FibroBiologics, Inc..
Sign up freeEvery institutional manager whose latest 13F reports this stock, largest position first. "% of their portfolio" is the weight inside that manager's own book — how much conviction the position represents; "% of company" is how much of FibroBiologics, Inc. they hold. Together these 50 managers report 47.39% of shares outstanding.
| Investor | Position value | Shares | % of their portfolio | % of company | As of |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | $274K | 1,216,341 | 0.00% | 18.27% | December 31, 2025 |
| Cascade Financial Partners, LLC | $103K | 108,828 | 0.01% | 1.63% | June 30, 2026 |
48 more institutional holders behind a free account
See every manager reporting FibroBiologics, Inc., how much of the company they hold, and how big the position is inside their own portfolio.
Sign up freeFunds disclosing this stock in their monthly N-PORT portfolio, with the position's share of the fund's net assets. Together these 9 funds hold 6.16% of shares outstanding — counted inside the manager totals above, not on top of them, since a fund's shares also appear in its manager's 13F.
| Fund | Position value | % of net assets | % of company | As of |
|---|---|---|---|---|
| Fidelity Extended Market Index Fund | $73.8K | 0.00% | 3.37% | February 28, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND | $52.7K | 0.00% | 0.60% | March 31, 2026 |
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