FIBROBIOLOGICS INC FBLG
COM NEW · Common Stock · CUSIP 31573L204
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersHouston, TX
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 6.7m as of 2026-07-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $0.95.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q2 2025 | 1 |
| Q3 2025 | 0 |
| Q4 2025 | 0 |
| Q1 2026 | 17 |
| Q2 2026 | 16 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2025 | 0 | 1 |
| Q2 2026 | 8 | 8 |
Biggest buyers
| Cascade Financial Partners, LLC | Added | +92.4k |
| Qube Research & Technologies Ltd | New | +24.3k |
| BARCLAYS PLC | New | +7.2k |
| Tower Research Capital LLC (TRC) | Added | +4.3k |
| OSAIC HOLDINGS, INC. | Added | +2.2k |
| ROYAL BANK OF CANADA | Added | +1.3k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +690 |
| Grove Bank & Trust | New | +100 |
Biggest sellers
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | -39.9k |
| RENAISSANCE TECHNOLOGIES LLC | Sold out | -16.0k |
| BlackRock, Inc. | Reduced | -6.4k |
| UBS Group AG | Reduced | -4.6k |
| NewEdge Advisors, LLC | Sold out | -845 |
| Vanguard Global Advisers, LLC | Sold out | -536 |
| WELLS FARGO & COMPANY/MN | Sold out | -10 |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | -2 |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| ARMISTICE CAPITAL, LLC 13G · institution new · filed 2026-08-14 | 10.0% |
Khoja Hamid
13D · may seek influence
new · filed 2026-09-17
Stated purposeOn September 15, 2026, the Issuer and the reporting person entered into a securities purchase agreement relating to the issuance and sale of 298,508 shares of the Issuer's common stock and accompanying warrants to purchase up to 298,508 shares of common stock in a private placement. The transaction closed on September 15, 2026. The warrants are exercisable at any time, have an exercise price of $1.55 per share, and expire on the five-year anniversary of the date of issuance. The warrants also contain standard anti-dilution adjustments to the exercise price including for stock splits, stock dividends, rights offerings and pro rata distributions. The Issuer issued the shares and warrants to the reporting person at an offering price of $1.675 per share and accompanying warrant for gross proce… Full filing |
7.5% |
Fell to 5% or below in the last year: Lind Global Fund III LP (5.0%, 2026-04-09)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 1 | $16.8k | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 1 | $47.6k | 0 | — | — |
| Q1 2026 | 4 | $72.9k | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| Cascade Financial Partners, LLC 0.01% of their portfolio | 108.8k $103.1k | Added +92.4k |
| Fund Evaluation Group, LLC 0.00% of their portfolio | 51.8k $49.1k | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 30.3k $28.7k | Added +690 |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 27.8k $26.3k | Reduced -39.9k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 24.3k $23.0k | New |
| BlackRock, Inc. 0.00% of their portfolio | 18.2k $17.3k | Reduced -6.4k |
| BARCLAYS PLC 0.00% of their portfolio | 7.2k $6.9k | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 6.4k $6.0k | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 4.7k $4.5k | Added +4.3k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 2.4k $2.3k | Added +2.2k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 1.5k $1.0k | Added +1.3k |
| UBS Group AG 0.00% of their portfolio | 1.1k $1.0k | Reduced -4.6k |
| ISLAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 169 $160 | Unchanged |
| Grove Bank & Trust 0.00% of their portfolio | 100 $95 | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 64 $61 | Reduced -2 |
| Allworth Financial LP 0.00% of their portfolio | 13 $13 | Unchanged |