secwatch.observer — SEC 8-K summary
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Issuer:     Matador Resources Co (MTDR)
CIK:        0001520006
Form:       8-K
Filed at:   2025-09-30T23:59:59+00:00
Accession:  0001520006-25-000210
Event type: leadership
Sentiment:  neutral
Materiality: 0.60
Item codes: 5.02, 7.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Matador Resources promotes Robert T. Macalik to CFO, effective Sept 29, 2025
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- Robert T. Macalik promoted to EVP & CFO of Matador Resources, effective Sept 29, 2025.
- Macalik retains role as CFO of San Mateo Midstream, Matador's midstream joint venture.
- William D. Lambert stepped down as CFO on Sept 24, 2025; departure not related to any accounting dispute.
- Macalik, a CPA, joined Matador in 2015; previously VP & CAO, then EVP Administration and Finance.
- Prior to Matador, Macalik worked at Pioneer Natural Resources and PwC.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1520006/000152000625000210/0001520006-25-000210-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1520006/000152000625000210/mtdr-20250924.htm
  HTML page:      https://secwatch.observer/filing/0001520006-25-000210

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