OS Therapies Inc
OSTX- Exchange
- NYSE
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001795091
No open-market purchases or sales by OS Therapies Inc insiders were filed in the last 90 days; 29 institutions reported holding it in 13F filings for Q2 2026, worth $5.50M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in OS Therapies Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 25
- +1 vs. Q3 2025
- Shares held
- 1.78M
- +222.4K (+14.3%) vs. Q3 2025
- Total value
- $2.49M
- −$559.8K (−18.4%) vs. Q3 2025
- New holders
- 7
- 8 more added
- Sold out
- 6
- 4 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting OSTX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 29 | $5.50M |
| Q1 2026 | 29 | $4.09M |
| Q4 2025 | 25 | $2.49M |
| Q3 2025 | 25 | $3.07M |
| Q2 2025 | 13 | $1.13M |
| Q1 2025 | 6 | $599.3K |
| Q4 2024 | 5 | $620.6K |
| Q3 2024 | 7 | $447.8K |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding OS Therapies Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 540,421 | $756.6K | 0.00% | +352,158+187.1% | Added |
| CM Management, LLC | 400,000 | $560.0K | 0.47% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 246,038 | $344.5K | 0.00% | +58,350+31.1% | Added |
| Marshall Wace, LLP | 109,949 | $153.9K | 0.00% | −88,603−44.6% | Reduced |
| Two Sigma Investments, LP | 87,537 | $122.6K | 0.00% | +1,290+1.5% | Added |
| Northern Trust Corp | 71,309 | $99.8K | 0.00% | +15,046+26.7% | Added |
| BlackRock, Inc. | 61,425 | $86.0K | 0.00% | +13,262+27.5% | Added |
| State Street Corp | 58,500 | $81.9K | 0.00% | +8,200+16.3% | Added |
| Ingalls & Snyder LLC | 36,676 | $51.0K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 30,785 | $43.1K | 0.00% | −62,789−67.1% | Reduced |
| Jane Street Group, LLC | 27,740 | $38.8K | 0.00% | +27,740 | New |
| Bridgeway Capital Management, LLC | 25,000 | $35.0K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 18,156 | $25.4K | 0.00% | +17,929+7,898.2% | Added |
| Stifel Financial Corp | 15,000 | $21.0K | 0.00% | 00.0% | Unchanged |
| Stratos Wealth Advisors, LLC | 13,817 | $19.3K | 0.00% | +13,817 | New |
| Jones Financial Companies LLLP | 10,867 | $15.2K | 0.00% | +3,000+38.1% | Added |
| Mercer Global Advisors Inc | 10,220 | $14.3K | 0.00% | −10,220−50.0% | Reduced |
| LPL Financial LLC | 10,113 | $14.2K | 0.00% | +10,113 | New |
| Morgan Stanley | 1,000 | $1.40K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 480 | $1.00K | 0.00% | +480 | New |
| Armstrong Advisory Group, Inc | 100 | $140 | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 88 | $123 | 0.00% | −4,079−97.9% | Reduced |
| Northwestern Mutual Wealth Management Co | 25 | $35 | 0.00% | +25 | New |
| Bank of America Corp | 23 | $32 | 0.00% | +23 | New |
| FNY Investment Advisers, LLC | 100 | $0 | 0.00% | +100 | New |
| Virtu Financial LLC | 0 | $0 | 0.00% | −75,801−100.0% | Sold out |
| Ground Swell Capital, LLC | 0 | $0 | 0.00% | −20,462−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −14,961−100.0% | Sold out |
| Sanders Morris Harris LLC | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −10,237−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| Full Sail Capital, LLC | – | – | – | – | Not filed |