{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-388649","form_type":"8-K","ticker":"AA","cik":"0001675149","company_name":"Alcoa Corp","filed_at":"2026-09-11T12:18:22+00:00","discovered_at":"2026-09-11T12:25:00.165773+00:00","generated_at":"2026-09-11T12:25:09.754390+00:00","sec_items":["8.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.8,"calibrated_materiality_score":0.8,"confidence":"high","headline":"South32 shareholders to vote Oct 15 on sale of aluminium assets to Alcoa","bullets":["South32 general meeting set for 15 Oct 2026 (AWST); Resolution 7 seeks approval of sale of aluminium value chain to Alcoa.","Deal per Umbrella Implementation Deed dated 30 Jun 2026; announced 1 Jul 2026; covers bauxite, alumina, and aluminium ops excluding Mozal.","Alcoa filed Form S-4 on 1 Sep 2026; prospectus declared effective and filed with SEC on 8 Sep 2026.","South32 board unanimously recommends 'For' Resolution 7, absent superior proposal and subject to independent expert conclusion."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-388649","json":"https://secwatch.observer/filing/0001193125-26-388649.json","markdown":"https://secwatch.observer/filing/0001193125-26-388649.md","text":"https://secwatch.observer/filing/0001193125-26-388649.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1675149/000119312526388649/0001193125-26-388649-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1675149/000119312526388649/d23778d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-11T12:25:09.754390+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"}