{"schema_version":"secwatch.filing_event.v1","accession":"0001140361-23-025497","form_type":"8-K","ticker":"KNF","cik":"0001955520","company_name":"Knife River Corp","filed_at":"2023-05-18T23:59:59+00:00","discovered_at":"2026-05-14T18:03:41.618787+00:00","generated_at":"2026-06-14T21:34:35.927405+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"medium","headline":"Knife River holds investor day; spin-off from MDU Resources effective May 31, 2023","bullets":["Separation via pro rata distribution of ~90% of Knife River Holding Company common stock to MDU Resources stockholders.","Distribution effective 11:59 p.m. EDT on May 31, 2023.","Investor day held May 18, 2023; presentation furnished as Exhibit 99.1.","Knife River to become standalone public company under ticker KNF."],"urls":{"canonical":"https://secwatch.observer/filing/0001140361-23-025497","json":"https://secwatch.observer/filing/0001140361-23-025497.json","markdown":"https://secwatch.observer/filing/0001140361-23-025497.md","text":"https://secwatch.observer/filing/0001140361-23-025497.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1955520/000114036123025497/0001140361-23-025497-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1955520/000114036123025497/brhc20053166_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-14T21:34:35.927405+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"}