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. Its 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. OS Therapies Incorporated was incorporated in 2018 and is based in Grasonville, Maryland.
OS Animal Health Receives USDA Feedback on Regulatory Pathway for OST-HER2 in Canine Osteosarcoma
OS Therapies' subsidiary OS Animal Health received USDA feedback on its conditional licensure pathway for OST-HER2 in canine osteosarcoma, covering efficacy, safety, non-clinical, and CMC requirements.
OSAH plans to seek conditional licensure on existing clinical data and hopes for a 2027 U.S. commercial launch, though full licensure will require additional studies.
The company is also evaluating strategic and capital alternatives for OSAH, including a Q4 2026 crowdfunding intended to help the subsidiary meet U.S. exchange listing standards.