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OS Therapies Incorporated, a clinical stage biopharmaceutical company, focuses on the identification, development, and commercialization of treatments for osteosarcoma and other solid tumors in the United States. The company's pipeline includes OST-HER2, an off-the-shelf immunotherapy for osteosarcoma patients; and OST-tunable drug conjugate (OST-tADC), an antibody-drug conjugate (ADC) silicone dioxide linker technology, with a plug-and-play platform that features tunable pH sensitive silicone linkers. The company was incorporated in 2018 and is based in Grasonville, Maryland.
Market information source · Sep 9, 2026
SEC company identity · Sep 9, 2026
Open-market timeline · full history
5 sells— close pricebar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Details | |
|---|---|---|---|---|
| Romness Paul A. | AwardD (derivative) | — | SEC | |
| McKean-Dieser Avril Suzette |
| AwardD (derivative) |
| — |
| SEC |
| Romness Paul A. | AwardD (derivative) | — | SEC |
| Romness Paul A. | AwardD (derivative) | — | SEC |
| Search Theodore F. | AwardD (derivative) | — | SEC |
| PETIT ROBERT | AwardD (derivative) | — | SEC |
| Jarry Olivier R. | AwardD (derivative) | — | SEC |
| Galzahr Karim | AwardD (derivative) | — | SEC |
| Acevedo Christopher P. | AwardD (derivative) | — | SEC |
| Ciccio John | AwardD (derivative) | — | SEC |
| Galzahr Karim | AwardD (derivative) | — | SEC |
| PETIT ROBERT | AwardD (derivative) | — | SEC |
| Search Theodore F. | AwardD (derivative) | — | SEC |
| McKean-Dieser Avril Suzette | AwardD (derivative) | — | SEC |
| Romness Paul A. | AwardD (derivative) | — | SEC |
| Acevedo Christopher P. | AwardD (derivative) | — | SEC |
| Ciccio John | AwardD (derivative) | — | SEC |
| Auerbach Shalom | Sell | $164K | SEC |
| Auerbach Shalom | Sell | $13.9K | SEC |
| Auerbach Shalom | Sell | $67.5K | SEC |
| Romness Paul A. | Other | — | SEC |
| Einodmil LLC | Other | $369K | SEC |
| Einodmil LLC | Sell | $284K | SEC |
| Jarry Olivier R. | AwardD (derivative) | — | SEC |
| Ciccio John | AwardD (derivative) | — | SEC |