{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-267154","form_type":"8-K","ticker":"KALU","cik":"0000811596","company_name":"KAISER ALUMINUM CORP","filed_at":"2025-11-05T23:59:59+00:00","discovered_at":"2026-05-14T18:02:42.237001+00:00","generated_at":"2026-05-17T00:28:23.044140+00:00","sec_items":["1.01","2.03","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Kaiser Aluminum closes $500M 5.875% senior notes due 2034; proceeds to redeem 4.625% 2028 notes","bullets":["Closed offering of $500M aggregate principal of 5.875% senior notes maturing March 1, 2034.","Interest payable semiannually on March 1 and Sept 1, first payment March 1, 2026.","Net proceeds, with revolver borrowings/cash, to redeem all outstanding 4.625% senior notes due 2028.","Notes redeemable at issuer's option on or after March 1, 2029 at specified prices.","Up to 40% of notes may be redeemed before March 1, 2029 with equity offering proceeds at 105.875%."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-267154","json":"https://secwatch.observer/filing/0001193125-25-267154.json","markdown":"https://secwatch.observer/filing/0001193125-25-267154.md","text":"https://secwatch.observer/filing/0001193125-25-267154.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/811596/000119312525267154/0001193125-25-267154-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/811596/000119312525267154/d78226d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T00:28:23.044140+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":"1b7aedab0728bde2ea771a802f30e5981f34db5e","claim":"KAISER ALUMINUM CORP incurred senior notes of $500,000,000 aggregate principal amount with Computershare Trust Company, N.A. at 5.875% per annum maturing March 1, 2034.","evidence_excerpt":"issued $500,000,000 aggregate principal amount of its 5.875% Senior Notes due 2034","evidence_source":"SEC 8-K Item 2.03/2.04","evidence_url":"https://www.sec.gov/Archives/edgar/data/811596/000119312525267154/0001193125-25-267154-index.htm","confidence":0.9,"family_label":"Debt Financings","details":[{"label":"Instrument","value":"senior notes"},{"label":"Principal","value":"$500,000,000 aggregate principal amount"},{"label":"Counterparty","value":"Computershare Trust Company, N.A."},{"label":"Rate","value":"5.875% per annum"},{"label":"Maturity","value":"March 1, 2034"},{"label":"Event","value":"incurrence"}],"fact_type":"debt_financing"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}