William J. Quinn (“Billy”) is the founder and Managing Partner of Pearl Energy Investments and is responsible for all aspects of managing the firm. He currently sits on the board of most Pearl portfolio companies including Permian Resources, SLANT Energy, Infinity Natural Resources, and Spring Valley Acquisition Corp.

Prior to founding Pearl, Billy served as Co-Managing Partner of Natural Gas Partners (NGP) for almost 20 years. In his capacity as Managing Partner, he co-managed NGP’s investment portfolio and played an active role in the full range of NGP’s investment process. In addition, Billy gained valuable investment experience working for Rainwater, Inc. and Hicks, Muse, Tate and Furst, Inc. He also worked as an analyst in the investment banking divisions of Bear Stearns & Co. and BT Securities Corporation.

Outside his investing activities, Billy serves as a guest lecturer on private equity investing at Stanford University’s Graduate School of Business.

Billy received a B.S.E. in Finance, with honors, from the Wharton School of the University of Pennsylvania, and an M.B.A. from the Stanford University Graduate School of Business.