{"schema_version":"secwatch.filing_event.v1","accession":"0001520006-22-000019","form_type":"8-K","ticker":"MTDR","cik":"0001520006","company_name":"Matador Resources Co","filed_at":"2022-01-11T23:59:59+00:00","discovered_at":"2026-05-14T18:04:06.835089+00:00","generated_at":"2026-06-27T18:56:59.318743+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Matador Resources announces retirement of President & CFO; promotes internal executives effective March 31, 2022","bullets":["President Matthew V. Hairford retires March 31; becomes Special Advisor to Board through Dec. 2023.","CFO David E. Lancaster retires March 31; becomes Special Advisor to Board through Dec. 2023.","Billy E. Goodwin promoted to President - Operations; Van H. Singleton, II promoted to President - Land, A&D and Planning.","Michael D. Frenzel (Sr. VP & Treasurer) appointed Principal Financial Officer succeeding Lancaster.","Christopher P. Calvert promoted to Co-Chief Operating Officer concurrent with leadership changes."],"urls":{"canonical":"https://secwatch.observer/filing/0001520006-22-000019","json":"https://secwatch.observer/filing/0001520006-22-000019.json","markdown":"https://secwatch.observer/filing/0001520006-22-000019.md","text":"https://secwatch.observer/filing/0001520006-22-000019.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1520006/000152000622000019/0001520006-22-000019-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1520006/000152000622000019/mtdr-20220110.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-27T18:56:59.318743+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":"6aae6a2acd","claim":"Van H. Singleton, II was appointed as President – Land, A&D and Planning at Matador Resources Co.","evidence_excerpt":"Van H. Singleton, II, age 44, the Company’s current Executive Vice President of Land, to President – Land, A&D and Planning","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1520006/000152000622000019/0001520006-22-000019-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"President – Land, A&D and Planning"}],"fact_type":"executive_change"},{"claim_id":"7b53aa96fc","claim":"David E. Lancaster departed as Executive Vice President and Chief Financial Officer at Matador Resources Co.","evidence_excerpt":"David E. Lancaster would retire as Executive Vice President and Chief Financial Officer effective March 31, 2022.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1520006/000152000622000019/0001520006-22-000019-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"Executive Vice President and Chief Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"9bde2616ba","claim":"Matthew V. Hairford departed as President at Matador Resources Co.","evidence_excerpt":"Matthew V. Hairford would retire as President of the Company effective March 31, 2022.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1520006/000152000622000019/0001520006-22-000019-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"President"}],"fact_type":"executive_change"},{"claim_id":"ce1f7d7e49","claim":"Billy E. Goodwin was appointed as President – Operations at Matador Resources Co.","evidence_excerpt":"Billy E. Goodwin, age 64, the Company’s current Executive Vice President and Chief Operating Officer—Drilling, Completions & Production, to President – Operations","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1520006/000152000622000019/0001520006-22-000019-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"President – Operations"}],"fact_type":"executive_change"},{"claim_id":"e8a392569a","claim":"Michael D. Frenzel was appointed as Principal Financial Officer at Matador Resources Co.","evidence_excerpt":"Michael D. Frenzel, age 40, the Company’s current Senior Vice President and Treasurer, to succeed Mr. Lancaster as Principal Financial Officer, effective March 31, 2022","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1520006/000152000622000019/0001520006-22-000019-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Principal Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}