{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-26-042672","form_type":"8-K","ticker":"GTBP","cik":"0000109657","company_name":"GT Biopharma, Inc.","filed_at":"2026-09-15T12:57:47+00:00","discovered_at":"2026-09-15T13:00:02.390025+00:00","generated_at":"2026-09-15T13:00:40.378417+00:00","sec_items":["1.01","3.02","3.03","5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.8,"calibrated_materiality_score":0.8,"confidence":"high","headline":"GT Biopharma raises $7.45M via convertible preferred stock and warrants","bullets":["GT Biopharma raises $7.45M via Series M 10% Convertible Preferred Stock and warrants; stated value $8.28M.","Conversion price $6.10; warrants exercisable at $6.10 for 100% of conversion shares, 5-year term.","Greenshoe option to purchase up to $30M additional preferred stock (stated value $33.33M) at 10% discount.","Dividends at 10% per annum until Sept 2027, then 12%; full ratchet price protection.","Company to seek shareholder approval for issuance over 19.99% of outstanding shares; officers/directors entered lockup and voting agreements."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-042672","json":"https://secwatch.observer/filing/0001493152-26-042672.json","markdown":"https://secwatch.observer/filing/0001493152-26-042672.md","text":"https://secwatch.observer/filing/0001493152-26-042672.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/109657/000149315226042672/0001493152-26-042672-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/109657/000149315226042672/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-15T13:00:40.378417+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"}