{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-192766","form_type":"8-K","ticker":"SANA","cik":"0001770121","company_name":"Sana Biotechnology, Inc.","filed_at":"2025-08-29T23:59:59+00:00","discovered_at":"2026-05-14T18:02:44.934341+00:00","generated_at":"2026-05-17T09:15:35.536126+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Sana Biotechnology director Mary Agnes Wilderotter resigns effective Aug 29","bullets":["Mary Agnes Wilderotter resigned as director and chair of Nominating and Corporate Governance Committee, effective Aug 29, 2025.","She also resigned from the Audit Committee. Resignation not due to any disagreement with Sana's operations, policies, or practices.","No replacement or further board changes announced in the filing."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-192766","json":"https://secwatch.observer/filing/0001193125-25-192766.json","markdown":"https://secwatch.observer/filing/0001193125-25-192766.md","text":"https://secwatch.observer/filing/0001193125-25-192766.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1770121/000119312525192766/0001193125-25-192766-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1770121/000119312525192766/sana-20250828.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T09:15:35.536126+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"}