Prior to joining Greenlake, Mr. Gallagher served as President and CEO of Parsley Energy. He joined Parsley Energy in 2010 to build the Engineering Department. He was named Vice President and Chief Operating Officer in 2014. In January 2017, Gallagher was promoted to President and Chief Operating Officer, before being named Chief Executive Officer in 2019. Prior to his time at Parsley, Gallagher spent five years at Pioneer Natural Resources in a variety of engineering and finance roles.
A third-generation petroleum engineer, Mr. Gallagher earned a Bachelor of Science in Petroleum Engineering from the Colorado School of Mines.
He has served on the public board of Pioneer Natural Resources, as well as the trade boards of the Permian Basin Petroleum Association, the American Exploration and Production Council, and the Permian Strategic Partnership. He currently serves on the Chesapeake Energy Corporation Board, is a Venture Partner at NGP Energy Capital, and serves on the American Printing House for the Blind non-profit board.