{"schema_version":"secwatch.filing_event.v1","accession":"0000067716-22-000067","form_type":"8-K","ticker":"MDU","cik":"0000067716","company_name":"MDU RESOURCES GROUP INC","filed_at":"2022-11-17T23:59:59+00:00","discovered_at":"2026-05-14T18:03:53.279922+00:00","generated_at":"2026-06-21T16:58:21.460563+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"MDU Resources names Brian Gray President of Knife River; David Barney remains CEO","bullets":["David Barney resigns as Knife River President effective Dec 31, 2022; remains CEO.","Brian Gray, previously President of Northwest Region, becomes President effective Jan 1, 2023.","Knife River separation as independent publicly traded company on track for 2023 (tax-free spinoff).","Gray led 7 acquisitions in Northwest since 2018, including Baker Rock Resources."],"urls":{"canonical":"https://secwatch.observer/filing/0000067716-22-000067","json":"https://secwatch.observer/filing/0000067716-22-000067.json","markdown":"https://secwatch.observer/filing/0000067716-22-000067.md","text":"https://secwatch.observer/filing/0000067716-22-000067.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/67716/000006771622000067/0000067716-22-000067-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/67716/000006771622000067/mdu-20221117.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T16:58:21.460563+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":"86f5aa66f7","claim":"David C. Barney resigned as President of Knife River Corporation at MDU RESOURCES GROUP INC.","evidence_excerpt":"On November 17, 2022, David C. Barney resigned his position as President of Knife River Corporation (“Knife River”) effective as of the end of the day December 31, 2022.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/67716/000006771622000067/0000067716-22-000067-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"President of Knife River Corporation"}],"fact_type":"executive_change"},{"claim_id":"889ac21a04","claim":"Brian R. Gray was appointed as President of Knife River Corporation at MDU RESOURCES GROUP INC.","evidence_excerpt":"Brian R. Gray, currently President of the Northwest Region of Knife River, will assume the President role at Knife River effective as of January 1, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/67716/000006771622000067/0000067716-22-000067-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"assume"},{"label":"Role","value":"President of Knife River Corporation"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}