{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-196414","form_type":"8-K","ticker":"SANA","cik":"0001770121","company_name":"Sana Biotechnology, Inc.","filed_at":"2025-09-05T23:59:59+00:00","discovered_at":"2026-05-14T18:02:44.934549+00:00","generated_at":"2026-05-17T07:59:46.207979+00:00","sec_items":["5.02","8.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Sana Biotechnology GC Bernard Cassidy to retire Oct 20; Aaron Grossman named successor","bullets":["Bernard Cassidy will retire as EVP, General Counsel, effective Oct 20, 2025.","Aaron Grossman appointed EVP, Chief Legal Officer, starting Oct 20, 2025.","Cassidy's retirement is voluntary for personal reasons; no disagreement with Company.","Cassidy expected to provide transition services after retirement date."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-196414","json":"https://secwatch.observer/filing/0001193125-25-196414.json","markdown":"https://secwatch.observer/filing/0001193125-25-196414.md","text":"https://secwatch.observer/filing/0001193125-25-196414.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1770121/000119312525196414/0001193125-25-196414-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1770121/000119312525196414/sana-20250904.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T07:59:46.207979+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"}