secwatch / observer
MTDR Matador Resources Co
CIK 0001520006 50 ready 8-Ks latest June 16, 2026, 4:51 PM ET RSS · JSON
Activity: NORMAL 1 filings / 30d vs 1 baseline
Ready 8-Ks 50
Latest filing June 16, 2026, 4:51 PM ET
Top materiality 0.90
Event mix debt ×12 · earnings ×10 · dividend ×9
Sentiment 20 pos · 0 neg · 30 neu
Latest earnings reported 2026-Q1
Executive change recent →

Recent 8-K filings for MTDR

Executive changes

Role change

Bryan A. Erman

Co-President, Chief Legal Officer and Head of M&A
MTDR · Matador Resources Co
Effective
2025-06-11
Filed
June 13, 2025, 7:59 PM ET
Bryan A. Erman has been promoted to Co-President, Chief Legal Officer and Head of M&A of the Company.
Role change

William D. Lambert

Executive Vice President, Chief Financial Officer and Head of Strategy
MTDR · Matador Resources Co
Effective
2025-06-11
Filed
June 13, 2025, 7:59 PM ET
William D. Lambert has been promoted to Executive Vice President, Chief Financial Officer and Head of Strategy of the Company.
Role change

Benjamin T. Colodney

Vice President and Chief Accounting Officer
MTDR · Matador Resources Co
Effective
2025-06-11
Filed
June 13, 2025, 7:59 PM ET
Benjamin T. Colodney has been promoted to Vice President and Chief Accounting Officer of the Company.
Role change

Robert T. Macalik

Executive Vice President – Administration and Finance of the Company and Executive Vice President and Chief Financial Officer of San Mateo
MTDR · Matador Resources Co
Effective
2025-06-11
Successor
Benjamin T. Colodney
Filed
June 13, 2025, 7:59 PM ET
Robert T. Macalik has been promoted to Executive Vice President – Administration and Finance of the Company and Executive Vice President and Chief Financial Officer of San Mateo.
Role change

Brian J. Willey

Executive Vice President – Midstream of the Company and Executive Vice President, Chief Administrative Officer and Chief Legal Officer of San Mateo Midstream, LLC
MTDR · Matador Resources Co
Effective
2025-06-11
Successor
William D. Lambert
Filed
June 13, 2025, 7:59 PM ET
Brian J. Willey has been promoted to Executive Vice President – Midstream of the Company and Executive Vice President, Chief Administrative Officer and Chief Legal Officer of San Mateo Midstream, LLC
Appointed

Paul W. Harvey

Director
MTDR · Matador Resources Co
Effective
2025-01-27
Filed
January 28, 2025, 6:59 PM ET
On January 27, 2025, the Board of Directors (the “Board”) of Matador Resources Company (the “Company”) appointed Paul W. Harvey as a director.
Departed

Billy E. Goodwin

President - Operations
MTDR · Matador Resources Co
Effective
2024-04-10
Filed
April 12, 2024, 7:59 PM ET
On April 10, 2024, Billy E. Goodwin informed Matador Resources Company (the “Company” or “Matador”) of his decision to retire at age 67 to devote more time to his family and other personal interests.
Departed

Craig N. Adams

Executive Vice President, Co-Chief Operating Officer and Corporate Secretary
MTDR · Matador Resources Co
Effective
2024-03-06
Successor
Bryan A. Erman and Christopher P. Calvert
Filed
March 8, 2024, 6:59 PM ET
Mr. Adams resigned from his roles as Executive Vice President, Co-Chief Operating Officer and Corporate Secretary of the Company, effective as of March 6, 2024
Appointed

Susan M. Ward

director
MTDR · Matador Resources Co
Effective
2024-01-24
Filed
January 25, 2024, 6:59 PM ET
On January 24, 2024, the Board of Directors (the “Board”) of Matador Resources Company (the “Company”) appointed Susan M. Ward as a director.
Departed

Michael D. Frenzel

Chief Financial Officer
MTDR · Matador Resources Co
Effective
2023-02-16
Successor
Brian J. Willey
Filed
February 16, 2023, 6:59 PM ET
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.
Role change

Brian J. Willey

Chief Financial Officer
MTDR · Matador Resources Co
Effective
2023-02-16
Filed
February 16, 2023, 6:59 PM ET
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.
Departed

Matthew V. Hairford

President
MTDR · Matador Resources Co
Effective
2022-03-31
Successor
Billy E. Goodwin, Van H. Singleton, II
Filed
April 4, 2022, 7:59 PM ET
Matthew V. Hairford retired as President of Matador Resources Company (the "Company") and David E. Lancaster retired as Executive Vice President and Chief Financial Officer of the Company, in each case effective on March 31, 2022.

Earnings & guidance

2026-Q1 EPS reported -$0.29 filing →

Materiality & sentiment trend

Max materiality 0.90 · Median 0.62 · Most common event debt

20 positive 0 negative 30 neutral

source · MTDR on sec.gov