J. Michael Mayer

J. Michael Mayer is an Operating Partner in the Business and Environmental Services vertical for One Rock Capital Partners, LLC. Mr. Mayer is currently the Chairman of One Rock portfolio company Petroplex and a Director of One Rock portfolio company Island Energy Services. From 2004-2008, Mr. Mayer served as Senior Vice President and Chief Financial Officer of Complete Production Services (“Complete”, former NYSE ticker: CPX), during which time Complete consummated an initial public offering. Prior to joining Complete, Mr. Mayer served as Chief Financial Officer of Tri-Point Energy from 2003-2004 and Chief Financial Officer of NATCO Group (“NATCO”, former NYSE ticker: NTG) from 1999-2003 during which time NATCO completed an initial public offering. Additionally, Mr. Mayer has served on the board of MBI Energy Services. Mr. Mayer holds a B.B.A. from Texas A&M University.