{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-26-043562","form_type":"8-K","ticker":"GTBP","cik":"0000109657","company_name":"GT Biopharma, Inc.","filed_at":"2026-09-21T20:10:24+00:00","discovered_at":"2026-09-21T20:11:00.349297+00:00","generated_at":"2026-09-21T20:11:13.195166+00:00","sec_items":["1.01","3.02","3.03","5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"GT Biopharma ups private placement to $7.75M, adds new investor","bullets":["Amended securities purchase agreement raises aggregate purchase price from $7.45M to $7.75M for 8,611.111 Series M preferred shares (stated value $8.61M).","New purchaser Nicholas R. Nikolov joins via joinder to registration rights agreement; Five Narrow Lane and Bristol Investment Fund remain majority purchasers.","Greenshoe rights allow purchasers to buy up to $34,675,615 stated value for $31,208,054 aggregate purchase price.","Certificate of Increase raises designated Series M preferred shares from 41,778 to 43,287.","Offering private under Rule 506(b); registration statement to be filed within 30 days of closing."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-043562","json":"https://secwatch.observer/filing/0001493152-26-043562.json","markdown":"https://secwatch.observer/filing/0001493152-26-043562.md","text":"https://secwatch.observer/filing/0001493152-26-043562.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/109657/000149315226043562/0001493152-26-043562-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/109657/000149315226043562/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-21T20:11:13.195166+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"}