| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Ciccio John | Director | C/O OS THERAPIES INCORPORATED, 115 PULLMAN CROSSING ROAD, SUITE 103, GRASONVILLE | /s/ John Ciccio | 19 Dec 2025 | 0001974196 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | OSTX | Common Stock | 435,835 | 21 Oct 2025 | Mill River Partners LLC | F1 | |||||
| holding | OSTX | Common Stock | 20,000 | 21 Oct 2025 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OSTX | Stock options (right to buy) | Award | $0 | +140,000 | $0.000000 | 140,000 | 21 Oct 2025 | Common Stock | 140,000 | $1.80 | Direct | F2 |
| Id | Content |
|---|---|
| F1 | John Ciccio serves on the board of managers of Mill River Partners LLC and shares voting and investment power with respect to these shares. |
| F2 | On October 21, 2025, the reporting person was granted options to purchase 140,000 shares of the issuer's common stock pursuant to the terms and conditions of a stock option award agreement. These options vest in full on the one-year anniversary of the date of grant, provided that the reporting person is serving as a director of the issuer on such date. |