---
schema_version: "secwatch.filing_event.v1"
accession: "0001520006-26-000008"
form_type: "8-K"
ticker: "MTDR"
cik: "0001520006"
company_name: "Matador Resources Co"
filed_at: "2026-04-27T23:59:59+00:00"
generated_at: "2026-05-15T03:49:32.558698+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Matador Resources promotes Calvert to CFO, Stetson to COO effective April 21

## Summary
- 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.

## SEC filing metadata
- accession: 0001520006-26-000008
- form_type: 8-K
- ticker: MTDR
- cik: 0001520006
- company_name: Matador Resources Co
- filed_at: 2026-04-27T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1520006/000152000626000008/0001520006-26-000008-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1520006/000152000626000008/mtdr-20260421.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001520006-26-000008
- JSON: https://secwatch.observer/filing/0001520006-26-000008.json
- Plain text: https://secwatch.observer/filing/0001520006-26-000008.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.