Pioneer Board of Directors

Charlie Thompson, Chairman of the Board
Mr. Thompson currently serves as chairman of the board and chief executive officer at Nuverra Environmental Solutions, a middle market oilfield water logistics company. Mr. Thompson founded PinHigh Capital Partners, a Houston-based family office affiliated investment partnership with a focus on private oil service and exploration and production investments. Previously, Mr. Thompson spent two years at Nomura Securities building the oil and gas investment banking business, and from 2004 to 2014 he was an original partner of Legacy Partners Group. Mr. Thompson holds a B.A. in geology from Williams College and attended Columbia Business School.
David Coppé
Mr. Coppé currently serves on the board of Legacy Reserves Inc., an oil and gas producer focused on horizontal development in the Permian basin. He also serves on the board of RDV Resources (f/k/a Sheridan I). Mr. Coppé served as director and head of energy, private equity of Caisse de Dépôt et Placement du Québec from March 2017 until March 2019. Mr. Coppé was also a co-founder and partner at Cadent Energy Partners, LLC, an energy-focused private equity firm, and chief executive officer of Probe Holdings, Inc., an independent manufacturer of wireline and downhole equipment for oil and gas wells. He started his career as a field engineer for Schlumberger and also worked for Goldman Sachs. Mr. Coppé received an M.B.A. from Massachusetts Institute of Technology and a Mechanical Engineering degree from the University of Louvain, Belgium.
John Jacobi
Mr. Jacobi began his full-time employment in the energy business in 1981 working for Woolf & Magee Inc., a drilling, exploration and production company. In 1991, Mr. Jacobi co-founded Jacobi-Johnson Energy, Inc., an independent oil and gas producer, and served as its president focusing on acquisitions in the Ark-La-Tex and Gulf Coast Basins. In 1998, Jacobi-Johnson Energy, Inc. was sold to EXCO Resources, where Mr. Jacobi served as vice president of business development and marketing and led the acquisition efforts on transactions valued at approximately $8 billion. In June 2013, Mr. Jacobi co-founded Covey Park Energy, Inc., again focusing on acquisitions and served as its co-chief executive officer. Covey Park Energy, Inc. was sold to Comstock Resources in July 2019.
Mathew S. Porter
Mr. Porter was appointed as a director of Pioneer's board upon our emergence from Chapter 11 in May 2020. In July 2020, he was appointed Pioneer's Interim Chief Executive Officer under a consulting arrangement until December 31, 2020 when he was appointed President and Chief Executive Officer, at which time he also became an employee of Pioneer. He currently serves as a non-independent director of Pioneer's board. Mr. Porter is also a founding partner at Activos, LLC, a consulting company in the domestic and international oilfield service industry and Allied Industrial Partners, an investment firm that focuses on investments in manufacturing, distribution, energy and industrial service companies. Previously, he was a chief executive officer, president and director at Xtreme Drilling Corp. and chief financial officer at Bronco Drilling Company. He started his career at BOK Financial Corp. as portfolio manager. Mr. Porter received his Master of Business Administration degree and Bachelor's Degree in Business Administration from University of Oklahoma.