{"schema_version":"secwatch.filing_event.v1","accession":"0001213900-26-037476","form_type":"8-K","ticker":"OSTX","cik":"0001795091","company_name":"OS Therapies Inc","filed_at":"2026-03-31T23:59:59+00:00","discovered_at":"2026-05-14T18:02:36.203392+00:00","generated_at":"2026-05-15T08:12:39.840247+00:00","sec_items":["8.01","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"OS Therapies files prospectus supplement for resale of up to 10.5M shares by selling stockholders","bullets":["Filed prospectus supplement covering resale of up to 10,529,417 shares of common stock by selling stockholders.","Shares registered under existing S-3 shelf effective August 12, 2025.","No new shares issued; proceeds go to selling stockholders, not the company.","Legal opinion of Olshan Frome Wolosky LLP on share legality attached as Exhibit 5.1."],"urls":{"canonical":"https://secwatch.observer/filing/0001213900-26-037476","json":"https://secwatch.observer/filing/0001213900-26-037476.json","markdown":"https://secwatch.observer/filing/0001213900-26-037476.md","text":"https://secwatch.observer/filing/0001213900-26-037476.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1795091/000121390026037476/0001213900-26-037476-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1795091/000121390026037476/ea0283924-8k_ostherapies.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T08:12:39.840247+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}