secwatch.observer — SEC 8-K summary
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Issuer:     Matador Resources Co (MTDR)
CIK:        0001520006
Form:       8-K
Filed at:   2026-04-27T23:59:59+00:00
Accession:  0001520006-26-000008
Event type: leadership
Sentiment:  neutral
Materiality: 0.45
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Matador Resources promotes Calvert to CFO, Stetson to COO effective April 21
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- Christopher P. Calvert promoted to EVP and CFO; previously EVP and COO.
- Glenn W. Stetson promoted to EVP and COO; previously EVP – Production.
- Robert T. Macalik ceased as CFO on April 21; departure not related to any accounting or operational disagreement.
- Both Calvert and Stetson have been key members of Matador since 2014 and have over ten years with the company.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1520006/000152000626000008/0001520006-26-000008-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1520006/000152000626000008/mtdr-20260421.htm
  HTML page:      https://secwatch.observer/filing/0001520006-26-000008

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer