Gordon T. Hall, Chairman
, Director since 2002
Member of the Compensation and the Nominating and Corporate Governance Committees
Retired Managing Director, Senior Oil Field Services Analyst and Co-Head of the Global Energy Group of Credit Suisse (a brokerage services and investment banking firm)
D. Bradley Childers
, Director since 2013
President and Chief Executive Officer, Archrock, Inc.
Anne-Marie N. Ainsworth
, Director since 2015
Chair of the Nominating and Corporate Governance Committee and member of the Audit Committee
Former President and Chief Executive Officer of the general partner of Oiltanking Partners, L.P. (a provider of terminal, storage and transportation services to the crude oil, refined petroleum and liquefied petroleum gas industries)
Frances Powell Hawes
, Director since 2015
Chair of the Audit Committee and member of the Nominating and Corporate Governance Committee
Independent Financial Consultant and former Chief Financial Officer of New Process Steel, L.P. (a privately held steel distribution company)
J.W.G "Will" Honeybourne
, Director since 2006
Member of the Compensation and Nominating and Corporate Governance Committees
Managing Director of First Reserve Corporation (a private equity firm)
James H. Lytal
, Director since 2015
Chair of the Compensation Committee and member of the Nominating and Corporate Governance Committee
Senior Advisor for Global Infrastructure Partners (a leading global, independent infrastructure investor)
Leonard W. Mallett
, Director Since 2021
Member of the Compensation Committee
Retired Executive Vice President and Chief Operations Officer of Summit Midstream Partners, LP
Jason C. Rebrook
, Director since 2020
Chief Executive Officer, Harvest Midstream (a privately-held midstream service provider)
Edmund P. Segner, III
, Director since 2018
Member of the Audit Committee
Professor in the Practice of Engineering Management in the Department of Civil and Environmental Engineering at Rice University (Houston) and retired President of EOG Resources, Inc. (an oil and gas exploration and production company)