{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-22-035311","form_type":"8-K","ticker":"GTBP","cik":"0000109657","company_name":"GT Biopharma, Inc.","filed_at":"2022-12-13T23:59:59+00:00","discovered_at":"2026-05-14T18:03:49.596866+00:00","generated_at":"2026-06-21T05:10:50.862642+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"negative","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"GT Biopharma announces departure of President of R&D and CMO Gregory Berk","bullets":["Dr. Gregory Berk no longer employed as President of R&D and Chief Medical Officer effective December 8, 2022.","No successor or interim replacement named in the filing.","Departure comes as GT Biopharma (GTBP) advances its cancer immunotherapy pipeline."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-22-035311","json":"https://secwatch.observer/filing/0001493152-22-035311.json","markdown":"https://secwatch.observer/filing/0001493152-22-035311.md","text":"https://secwatch.observer/filing/0001493152-22-035311.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/109657/000149315222035311/0001493152-22-035311-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/109657/000149315222035311/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T05:10:50.862642+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":[{"claim_id":"be0c1b6f0a","claim":"Gregory Berk departed as President of Research & Development and Chief Medical Officer at GT Biopharma, Inc..","evidence_excerpt":"Effective December 8, 2022, Dr. Gregory Berk, President of Research & Development and Chief Medical Officer, is no longer employed by the Registrant.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/109657/000149315222035311/0001493152-22-035311-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"no longer employed"},{"label":"Role","value":"President of Research & Development and Chief Medical Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}