{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-25-049438","form_type":"8-K","ticker":"KALU","cik":"0000811596","company_name":"KAISER ALUMINUM CORP","filed_at":"2025-04-02T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.359833+00:00","generated_at":"2026-05-24T00:11:23.951236+00:00","sec_items":["2.02","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Kaiser Aluminum changes inventory accounting from LIFO to WAC; restates 2023-2024 results","bullets":["Effective Jan 1, 2025, switches from LIFO to weighted average cost for virtually all inventories; applied retrospectively.","Restated 2023: net income increased $20.6M to $67.8M; retained earnings as of Dec 31, 2023: $66.3M (up $56.2M).","Restated 2024: net income increased $18.9M to $65.7M; retained earnings as of Dec 31, 2024: $81.3M (up $75.1M).","Inventory increased $73.5M to $550.7M at Dec 31, 2023, and $98.0M to $601.9M at Dec 31, 2024.","Company cites improved comparability, better reflects physical flow of goods, and simplifies financial close."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-25-049438","json":"https://secwatch.observer/filing/0000950170-25-049438.json","markdown":"https://secwatch.observer/filing/0000950170-25-049438.md","text":"https://secwatch.observer/filing/0000950170-25-049438.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/811596/000095017025049438/0000950170-25-049438-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/811596/000095017025049438/kalu-20250402.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T00:11:23.951236+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"}