{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-257524","form_type":"8-K","ticker":"KALU","cik":"0000811596","company_name":"KAISER ALUMINUM CORP","filed_at":"2026-06-04T20:30:16+00:00","discovered_at":"2026-06-04T20:32:00.201176+00:00","generated_at":"2026-06-04T21:00:46.570130+00:00","sec_items":["5.02","5.07","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Kaiser Aluminum shareholders approve 395K-share increase to equity plan, re-elect three directors","bullets":["Shareholders approved amendment to 2021 equity plan, increasing authorized shares by 395,000 to total 1,183,000.","Three Class I directors (Hoffman, Minor, Wilcox) elected with majority votes for terms through 2029.","Advisory vote on executive compensation passed with 98.68% support; ratification of Deloitte as auditor passed with 98.20%.","Amended equity plan approved by 94.43% of votes cast; plan now has minimum one-year vesting for most awards except exceptions."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-257524","json":"https://secwatch.observer/filing/0001193125-26-257524.json","markdown":"https://secwatch.observer/filing/0001193125-26-257524.md","text":"https://secwatch.observer/filing/0001193125-26-257524.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/811596/000119312526257524/0001193125-26-257524-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/811596/000119312526257524/kalu-20260604.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-04T21:00:46.570130+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":"3e1b193ea6245ea7b7c94604a4d52b3806fa3ebe","claim":"KAISER ALUMINUM CORP shareholders approved Election of three Class I directors for terms expiring at the 2029 Annual Meeting.","evidence_excerpt":"1. Election of Directors - The stockholders elected three Class I directors, each for a term expiring at the Company's 2029 Annual Meeting of Stockholders. Each received the affirmative vote of a majority of the votes cast at the 2026 Annual Meeting. The voting results were as follows: Nominee Name Votes For Votes Withheld Broker Non-Votes James D. Hoffman 13,600,788.963056 796.383000 722.574.000000 Glenda J. Minor 14,118,306.174456 278,865.788600 722.574.000000 Brett E. Wilcox 13,838,262.963056 558,909.000000 722.574.000000","evidence_source":"SEC 8-K Item 5.07","evidence_url":"https://www.sec.gov/Archives/edgar/data/811596/000119312526257524/0001193125-26-257524-index.htm","confidence":0.9,"family_label":"Shareholder Votes","details":[{"label":"Proposal","value":"director election"},{"label":"Outcome","value":"passed"}],"fact_type":"shareholder_vote"},{"claim_id":"73948e53535780702beadf0de3ae6e12a2d03229","claim":"KAISER ALUMINUM CORP shareholders approved Advisory vote on executive compensation.","evidence_excerpt":"2. Advisory Vote on Executive Compensation - The Company's stockholders approved, on an advisory, non-binding basis, the compensation of the Company's named executive officers. The voting results were as follows: For Against Abstain Broker Non-Votes 14,207,656.775510 171,450.243473 18,088.486942 722.574.000000","evidence_source":"SEC 8-K Item 5.07","evidence_url":"https://www.sec.gov/Archives/edgar/data/811596/000119312526257524/0001193125-26-257524-index.htm","confidence":0.9,"family_label":"Shareholder Votes","details":[{"label":"Proposal","value":"say on pay"},{"label":"Outcome","value":"passed"}],"fact_type":"shareholder_vote"},{"claim_id":"7b4ff751e9e85212996c2abf99c0e0fc86591840","claim":"KAISER ALUMINUM CORP shareholders approved Approval of the Amended 2021 Plan.","evidence_excerpt":"4. Approval of the Amended 2021 Plan — The Company's stockholders approved the Amended 2021 Plan. The voting results were as follows: For Against Abstain Broker Non-Votes 13,595,325.653799 785,562.439006 16,307.413120 722.574.000000","evidence_source":"SEC 8-K Item 5.07","evidence_url":"https://www.sec.gov/Archives/edgar/data/811596/000119312526257524/0001193125-26-257524-index.htm","confidence":0.9,"family_label":"Shareholder Votes","details":[{"label":"Proposal","value":"equity plan"},{"label":"Outcome","value":"passed"}],"fact_type":"shareholder_vote"},{"claim_id":"80f633861ba0e19f9d402664b807a4aef407472e","claim":"KAISER ALUMINUM CORP shareholders approved Ratification of selection of Deloitte & Touche LLP as independent registered public accounting firm for 2026.","evidence_excerpt":"3. Ratification of the Selection of Independent Registered Public Accounting Firm - The Company's stockholders ratified the selection of Deloitte & Touche LLP as the independent registered public accounting firm for the Company for 2026. The voting results were as follows: For Against Abstain 14,847,826.494528 251,817.441411 20,125.569986","evidence_source":"SEC 8-K Item 5.07","evidence_url":"https://www.sec.gov/Archives/edgar/data/811596/000119312526257524/0001193125-26-257524-index.htm","confidence":0.9,"family_label":"Shareholder Votes","details":[{"label":"Proposal","value":"auditor ratification"},{"label":"Outcome","value":"passed"}],"fact_type":"shareholder_vote"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}