OS Therapies Incorporated (OSTX) ownership: Top institutional holder: VANGUARD GROUP INC ($756589.00). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 540421.00 | $756589.00 | 2025-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 469467.00 | $661948.00 | 2026-03-31 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 448737.00 | $632719.00 | 2026-03-31 |
| CM Management, LLC | 400000.00 | $564000.00 | 2026-03-31 |
| UBS Group AG | 348678.00 | $491636.00 | 2026-03-31 |
| HOWARD FINANCIAL SERVICES, LTD. | 248001.00 | $471202.00 | 2026-06-30 |
| GEODE CAPITAL MANAGEMENT, LLC | 280045.00 | $394863.00 | 2026-03-31 |
| VANGUARD FIDUCIARY TRUST CO | 116663.00 | $164495.00 | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-01-22 | |
| Sell | null | 2026-01-22 | |
| Sell | null | 2026-01-22 | |
| Sell | null | 2026-01-22 | |
| Sell | null | 2026-01-22 | |
| Sell | null | 2026-01-22 | |
| Sell | null | 2026-01-22 | |
| Sell | null | 2026-01-22 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.