{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-25-002220","form_type":"8-K","ticker":"KALU","cik":"0000811596","company_name":"KAISER ALUMINUM CORP","filed_at":"2025-01-06T23:59:59+00:00","discovered_at":"2026-05-14T18:03:06.405965+00:00","generated_at":"2026-05-28T11:47:46.305976+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Kaiser Aluminum: Executive Chair Hockema retires; CEO Harvey becomes Chairman; Kimberly Glas appointed director","bullets":["Jack A. Hockema retired as director and Executive Chair effective January 1, 2025, with no disagreement with the Company.","Keith A. Harvey, CEO and President, appointed Chairman of the Board, effective January 1, 2025.","Kimberly T. Glas appointed as Class I director, term expiring at 2025 annual meeting; serves on audit and sustainability committees.","Glas is President/CEO of National Council of Textile Organizations and served as Commissioner of U.S.-China Economic and Security Review Commission.","Glas brings policy development, labor relations, and manufacturing experience; her compensation is prorated for partial year service."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-25-002220","json":"https://secwatch.observer/filing/0000950170-25-002220.json","markdown":"https://secwatch.observer/filing/0000950170-25-002220.md","text":"https://secwatch.observer/filing/0000950170-25-002220.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/811596/000095017025002220/0000950170-25-002220-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/811596/000095017025002220/kalu-20241231.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-28T11:47:46.305976+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":"12d2fdc361","claim":"Kimberly T. Glas was appointed as Director at KAISER ALUMINUM CORP.","evidence_excerpt":"Kimberly T. Glas as a director to fill the vacancy on the Board created by Mr. Hockema’s retirement","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/811596/000095017025002220/0000950170-25-002220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"1d6f01e3fb","claim":"Keith A. Harvey was appointed as Chairman of the Board at KAISER ALUMINUM CORP.","evidence_excerpt":"the Board appointed Keith A. Harvey, the Company’s Chief Executive Officer and a director, as Chairman of the Board","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/811596/000095017025002220/0000950170-25-002220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chairman of the Board"}],"fact_type":"executive_change"},{"claim_id":"4cf6d83a35","claim":"Jack A. Hockema retired as Executive Chair at KAISER ALUMINUM CORP.","evidence_excerpt":"Jack A. Hockema, Executive Chair of the board of directors (the “Board”) of Kaiser Aluminum Corporation (the “Company”) and Chair of the Executive Committee of the Board, notified the Board of his decision to retire as a director of the Company effective January 1, 2025","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/811596/000095017025002220/0000950170-25-002220-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retired"},{"label":"Role","value":"Executive Chair"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}