{"schema_version":"secwatch.filing_event.v1","accession":"0000067716-23-000013","form_type":"8-K","ticker":"MDU","cik":"0000067716","company_name":"MDU RESOURCES GROUP INC","filed_at":"2023-02-17T23:59:59+00:00","discovered_at":"2026-05-14T18:03:47.787983+00:00","generated_at":"2026-06-19T08:24:48.203946+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"MDU Resources names Brian Gray as Knife River CEO; retention deal for CSG head Thiede","bullets":["David C. Barney to step down as CEO of Knife River effective March 1, 2023; Brian R. Gray succeeds him.","Barney will serve as non-executive senior advisor through his retirement on January 3, 2024.","Barney retains current base salary, 2023 target bonus, and receives 2023 annual equity award.","CSG President & CEO Jeffrey Thiede enters retention agreement tied to strategic review; $1.1M cash bonus upon closing of a transaction.","Thiede also gets prorated vesting of 2023 equity, prorated annual bonus, and full deferred comp vesting if transaction closes."],"urls":{"canonical":"https://secwatch.observer/filing/0000067716-23-000013","json":"https://secwatch.observer/filing/0000067716-23-000013.json","markdown":"https://secwatch.observer/filing/0000067716-23-000013.md","text":"https://secwatch.observer/filing/0000067716-23-000013.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/67716/000006771623000013/0000067716-23-000013-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/67716/000006771623000013/mdu-20230216.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-19T08:24:48.203946+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":"18a41f1e82","claim":"David C. Barney resigned as Chief Executive Officer of Knife River Corporation at MDU RESOURCES GROUP INC.","evidence_excerpt":"On February 16, 2023, MDU Resources Group, Inc. (the “Company”) announced that David C. Barney will cease serving in his position as Chief Executive Officer of Knife River Corporation (“Knife River”), the Company’s construction materials subsidiary, effective as of March 1, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/67716/000006771623000013/0000067716-23-000013-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Executive Officer of Knife River Corporation"}],"fact_type":"executive_change"},{"claim_id":"8bf79f6bda","claim":"Brian R. Gray was appointed as Chief Executive Officer of Knife River Corporation at MDU RESOURCES GROUP INC.","evidence_excerpt":"Brian R. Gray, currently President of Knife River, will assume the Chief Executive Officer role at Knife River.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/67716/000006771623000013/0000067716-23-000013-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Executive Officer 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"}