{"schema_version":"secwatch.filing_event.v1","accession":"0001520006-23-000029","form_type":"8-K","ticker":"MTDR","cik":"0001520006","company_name":"Matador Resources Co","filed_at":"2023-02-16T23:59:59+00:00","discovered_at":"2026-05-14T18:03:45.366251+00:00","generated_at":"2026-06-19T09:17:32.588063+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":"Matador Resources promotes Brian J. Willey to CFO, effective Feb 16, 2023","bullets":["Brian J. Willey promoted to CFO, President of Midstream Operations and Executive Vice President.","Michael D. Frenzel steps down as principal financial officer but remains EVP and Treasurer.","Willey previously served as President & General Counsel of Midstream Operations and President of San Mateo Midstream.","Willey joined Matador in 2014; background includes accounting, law, and Baker Botts."],"urls":{"canonical":"https://secwatch.observer/filing/0001520006-23-000029","json":"https://secwatch.observer/filing/0001520006-23-000029.json","markdown":"https://secwatch.observer/filing/0001520006-23-000029.md","text":"https://secwatch.observer/filing/0001520006-23-000029.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1520006/000152000623000029/0001520006-23-000029-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1520006/000152000623000029/mtdr-20230216.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-19T09:17:32.588063+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":"53406517e1","claim":"Michael D. Frenzel departed as Chief Financial Officer at Matador Resources Co.","evidence_excerpt":"As Chief Financial Officer, Mr. Willey will assume the role of principal financial officer from Michael D. Frenzel, who will continue as an Executive Vice President and the Treasurer of the Company.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1520006/000152000623000029/0001520006-23-000029-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"stepped down"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"9fd817fb42","claim":"Brian J. Willey changed role as Chief Financial Officer at Matador Resources Co.","evidence_excerpt":"Matador Resources Company (the “Company”) today announced the promotion of Brian J. Willey to Chief Financial Officer, President of Midstream Operations and Executive Vice President, effective as of February 16, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1520006/000152000623000029/0001520006-23-000029-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"promoted"},{"label":"Role","value":"Chief Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}