FBLG — FibroBiologics, Inc.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2024-01-31.
Performance
Technicals
Others in Healthcare
Measured signals that fired on FBLG
| date | signal | measured base rate |
|---|---|---|
| 2026-03-17 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-03-04 | Cluster buy: three or more insiders insider | +0.63% over 21 days · t = 1.84 · n = 3,050 not distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-03-04 | Khoja Hamid Chief Scientific Officer | Open-market purchase | 30.0K | 0.38 | 11.4K |
| 2026-03-04 | O'HEERON PETE CHIEF EXECUTIVE OFFICER | Open-market purchase | 15.9K | 0.38 | 6.0K |
| 2026-03-03 | O'HEERON PETE CHIEF EXECUTIVE OFFICER | Open-market purchase | 18.2K | 0.41 | 7.5K |
| 2026-03-02 | Davis Jason Chief Financial Officer | Open-market purchase | 70.0K | 0.41 | 28.7K |
| 2026-03-02 | O'HEERON PETE CHIEF EXECUTIVE OFFICER | Open-market purchase | 17.4K | 0.35 | 6.1K |
| 2026-02-27 | GARCIA RUBEN A General Counsel | Open-market purchase | 40.0K | 0.33 | 13.2K |
| 2025-12-11 | GARCIA RUBEN A General Counsel | Open-market purchase | 140.0K | 0.34 | 47.6K |
| 2025-05-27 | Khoja Hamid Chief Scientific Officer | Open-market purchase | 20.0K | 0.84 | 16.8K |
| 2024-12-09 | O'HEERON PETE Chief Executive Officer | Gift | 100.0K | 0.00 | 0 |
| 2024-12-03 | O'HEERON PETE Chief Executive Officer | Gift | 50.0K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 89.3K | 67.7K |
| Fund Evaluation Group, LLC | 68.4K | 51.8K |
| GEODE CAPITAL MANAGEMENT, LLC | 39.1K | 29.6K |
| BlackRock, Inc. | 32.5K | 24.6K |
| Cascade Financial Partners, LLC | 21.7K | 16.4K |
| RENAISSANCE TECHNOLOGIES LLC | 21.1K | 16.0K |
| VANGUARD FIDUCIARY TRUST CO | 8.4K | 6.4K |
| UBS Group AG | 7.6K | 5.7K |
| Vanguard Global Advisers, LLC | 708 | 536 |
| Tower Research Capital LLC (TRC) | 607 | 460 |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| SCHEDULE 13G | 2026-08-14 | — | on EDGAR ↗ |
| 10-Q | 2026-07-31 | 2026-06-30 | on EDGAR ↗ |
| DEF 14A | 2026-07-31 | 2026-09-17 | on EDGAR ↗ |
| 8-K | 2026-07-24 | 2026-07-22 | on EDGAR ↗ |
| PRE 14A | 2026-07-17 | 2026-09-17 | on EDGAR ↗ |
| EFFECT | 2026-07-16 | — | on EDGAR ↗ |
| 424B3 | 2026-07-16 | — | on EDGAR ↗ |
| 3 | 2026-07-16 | 2026-07-08 | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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