{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-22-019872","form_type":"8-K","ticker":"STRO","cik":"0001382101","company_name":"SUTRO BIOPHARMA, INC.","filed_at":"2022-10-24T23:59:59+00:00","discovered_at":"2026-05-14T18:03:50.383234+00:00","generated_at":"2026-06-23T01:35:59.257127+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Sutro Biopharma CMO Arturo Molina resigns; effective Nov 4, 2022","bullets":["Dr. Arturo Molina notified Sutro on Oct 18, 2022 of his resignation as Chief Medical Officer.","Resignation effective November 4, 2022; no successor announced.","Company states resignation not due to any disagreement with management or board."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-22-019872","json":"https://secwatch.observer/filing/0000950170-22-019872.json","markdown":"https://secwatch.observer/filing/0000950170-22-019872.md","text":"https://secwatch.observer/filing/0000950170-22-019872.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1382101/000095017022019872/0000950170-22-019872-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1382101/000095017022019872/stro-20221018.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-23T01:35:59.257127+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":"4f2cef3914","claim":"Arturo Molina resigned as Chief Medical Officer at SUTRO BIOPHARMA, INC..","evidence_excerpt":"On October 18, 2022, Dr. Arturo Molina notified Sutro Biopharma, Inc. (the “ Company ”) that he will resign from his role as Chief Medical Officer of the Company, effective November 4, 2022.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1382101/000095017022019872/0000950170-22-019872-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"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"}