Pioneer Natural Resources Company (NYSE:PXD) (“Pioneer” or “the Company”) today announced that Andrew Lundquist has resigned his position as a director of Pioneer to join the Executive Leadership Team of ConocoPhillips Company. Mr. Lundquist joined the Pioneer Board of Directors in 2004 and served on the Company’s Compensation and Management Development Committee and Nominating and Corporate Governance Committee. Scott D. Sheffield, Chairman and CEO, stated, "On behalf of Pioneer and its Board, I want to thank Andrew for his many years of service to Pioneer. He has been an invaluable resource to the Board as it faced periods of change, growth, successes and challenges, and the Company has benefited greatly from his professionalism, dedication, wisdom and experience. His insight and leadership will be missed.” Pioneer is a large independent oil and gas exploration and production company, headquartered in Dallas, Texas, with operations in the United States. For more information, visit Pioneer’s website at www.pxd.com.