{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-031203","form_type":"8-K","ticker":"AA","cik":"0001675149","company_name":"Alcoa Corp","filed_at":"2025-02-21T23:59:59+00:00","discovered_at":"2026-05-14T18:03:04.402991+00:00","generated_at":"2026-05-26T06:58:37.401123+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Alcoa Chairman Steven Williams to step down at 2025 annual meeting, board reduces to 11","bullets":["Williams will not stand for re-election; term ends at conclusion of 2025 Annual Meeting.","He has served as director since 2016 and as Chairman since 2021.","Decision is not due to any disagreement with the Board or Company.","Board size will be reduced to 11 directors effective immediately upon his departure.","CEO William Oplinger thanked Williams for his service and leadership."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-031203","json":"https://secwatch.observer/filing/0001193125-25-031203.json","markdown":"https://secwatch.observer/filing/0001193125-25-031203.md","text":"https://secwatch.observer/filing/0001193125-25-031203.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1675149/000119312525031203/0001193125-25-031203-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1675149/000119312525031203/d819202d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-26T06:58:37.401123+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":"22e521dc95","claim":"Steven W. Williams departed as Chairman of the Board at Alcoa Corp.","evidence_excerpt":"On February 20, 2025, Mr. Steven W. Williams provided notice to Alcoa Corporation (“Alcoa” or the “Company”) that he will not stand for re-election as a member of the Company’s Board of Directors","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1675149/000119312525031203/0001193125-25-031203-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"will not stand for re-election"},{"label":"Role","value":"Chairman of the Board"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}