{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-25-044862","form_type":"8-K","ticker":"GERN","cik":"0000886744","company_name":"GERON CORP","filed_at":"2025-10-14T23:59:59+00:00","discovered_at":"2026-05-14T18:02:42.491394+00:00","generated_at":"2026-05-17T04:02:36.364339+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Geron announces COO and CCO departures; appoints new CCO and three senior leaders","bullets":["COO Andrew Grethlein and CCO Jim Ziegler depart Oct 15, 2025; Grethlein stays as consultant up to 12 months.","Ahmed ElNawawi appointed EVP, Chief Commercial Officer, effective Oct 20, 2025; ex-Stemline/Novartis.","Three new SVP appointments: CTO, IR/Corporate Affairs, Portfolio/Project Mgmt; join by Oct 20.","Director Gaurav Aggarwal resigns immediately; V. Bryan Lawlis not standing for re-election at 2026 meeting."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-25-044862","json":"https://secwatch.observer/filing/0001628280-25-044862.json","markdown":"https://secwatch.observer/filing/0001628280-25-044862.md","text":"https://secwatch.observer/filing/0001628280-25-044862.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/886744/000162828025044862/0001628280-25-044862-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/886744/000162828025044862/gern-20251010.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T04:02:36.364339+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"}