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Alan R. Crain, Chairman
Mr. Crain has been Chairman of the Board since November 2017 and a member of our Board since May 2017. He is currently a director, and the Chairman of the Governance Committee, of the National Association of Corporate Directors Texas Tri-Cities Chapter. He is a lecturer at the Jones Graduate School of Business at Rice University and other organizations regarding complex issues facing corporate boards. He is a member of the board of directors of DDB Holding Company, LLC, an oilfield services portfolio company of Hastings Equity Partners. He is also on the boards of the World Affairs Council of Houston; the American Arbitration Association; the Asia Society, Texas Center; the Institute for Transnational Arbitration and multiple organizations dedicated to protecting human rights. Mr. Crain was Senior Vice President, Chief Legal and Governance Officer of Baker Hughes Incorporated until his retirement at the end of December 2016. He joined Baker Hughes in October 2000 as Vice President and General Counsel. Prior thereto he was General Counsel of Crown Cork & Seal Company and General Counsel of Union Texas Petroleum Holdings, Inc. Earlier in his career he was a lawyer with Pennzoil Company and with El Paso LNG Company. He is a member of the Council on Foreign Relations and has served on the ABA's Center for Human Rights. He graduated from Rensselaer Polytechnic Institute with both BS and MS degrees in Engineering and received a MBA and a JD from Syracuse University.


Gregory A. Beard
Mr. Beard has been a member of our Board since August 2013 and previously served as a member of the Board of Managers of our predecessor entity, EPE Acquisition, LLC, from May 2012 to August 2013. He is a member of the Senior Management Committee of Apollo Global Management. Mr. Beard joined Apollo in June 2010 as the Global Head of Natural Resources and Senior Partner based in the New York office. Mr. Beard has 24 years of investment experience, including 10 years at Riverstone Holdings where he was a founding member, Managing Director and lead deal partner in many of the firm's top oil and gas and energy service investments. While at Riverstone, Mr. Beard was involved in all aspects of the investment process including sourcing, structuring, monitoring and exiting transactions. Mr. Beard began his career as a Financial Analyst at Goldman Sachs, where he played an active role in that firm's energy-sector principal investment activities. Mr. Beard has also served on the board of directors of many oil and natural gas companies, including Belden & Blake Corporation, Canera Resources, Cobalt International Energy, Eagle Energy, Legend Natural Gas I-IV, Mariner Energy, Phoenix Exploration, Titan Operating, Vantage Energy and Virginia Uranium. Mr. Beard has served on the Board of various oilfield services companies, including CDM Max, CDM Resource Management, and International Logging. Mr. Beard currently serves on the board of directors of certain private companies, including Apex Energy, LLC, Caelus Energy Alaska, LLC, CSV Midstream Solutions GP LLC, Double Eagle Energy Holdings, LLC, Double Eagle Energy Holdings II, LLC, Double Eagle Energy Holdings III, LLC, Jupiter Resources GP LLC, Pegasus Optimization Partners, LLC, Roundtable Energy Holdings, LLC, Talos Energy, LLC and Tumbleweed Royalty, LLC. He previously served as a director of Athlon Energy Inc., NRI Management Group, LLC, and Pinnacle Agriculture Holdings, LLC. Mr. Beard received his BA from the University of Illinois at Urbana.


Scott R. Browning
Mr. Browning has been a member of our Board since June 2016. Mr. Browning joined Apollo in 2014 and is a member of the Natural Resources group. Prior to joining Apollo, Mr. Browning was an investment professional at Natural Gas Partners, where he was involved in the execution and monitoring of investments in the energy sector. Previously, he worked in the Investment Banking Division at Goldman, Sachs & Co. in the Natural Resources group. Mr. Browning currently serves on the board of directors of certain private companies, including Pegasus Optimization Partners, LLC and Momentum Minerals, LLC. Mr. Browning received a Bachelor of Science in Chemical Engineering with Highest Honors from The University of Texas at Austin.


Wilson B. Handler
Mr. Handler has been a member of our Board since November 2013. Mr. Handler joined Apollo in 2011 and is a member of the Natural Resources group. Prior to joining Apollo, Mr. Handler was an investment professional at First Reserve, where he was involved in the execution and monitoring of investments in the energy sector. Previously, he worked in the Investment Banking Division at Lehman Brothers in the Natural Resources group. Currently, Mr. Handler serves on the board of directors of certain private companies, including American Petroleum Partners, LLC, CSV Midstream Solutions GP LLC, Jupiter Resources GP LLC, Resource Energy Partners, LLC, and Wolfcamp DrillCo, LLC and previously served as a director of Athlon Energy Inc. Mr. Handler graduated from Dartmouth College with an AB in Economics and Government.


John J. Hannan
Mr. Hannan has been a member of our Board since December 2013. Mr. Hannan is Chairman of the Board of Directors of Apollo Investment Corporation, a public investment company. He served as Chief Executive Officer of Apollo Investment Corporation from 2006 to 2008. Mr. Hannan, a senior partner of Apollo Management, L.P., co-founded Apollo Management, L.P. in 1990. Mr. Hannan is an advisor to Apollo's Natural Resources group. He has been on several public boards including Vail Resorts, Inc. and Goodman Global, Inc., and is currently on the board of Environmental Solutions Worldwide and Brown University. Mr. Hannan is actively involved in charitable organizations. He received a BBA from Adelphi University and an MBA from Harvard Business School.


J. Barton Kalsu
Mr. Kalsu has been a member of our Board since January 2018. Mr. Kalsu currently serves as Executive Vice President and Chief Financial Officer of SolarWinds, Inc. He joined SolarWinds, Inc. in 2007 as Chief Accountant and Vice President, Finance and was responsible for managing their financial operations through an initial public offering and then as a private company. He was previously Vice President, Commercial Banking, for JPMorgan Chase from June 2005 to August 2007 and from April 2002 until June 2005, Mr. Kalsu was Senior Director of Finance. Prior to 2002, Mr. Kalasu worked in public accounting for Arthur Andersen LLP. Mr. Kalsu previously served on the board of directors of Athlon Energy prior to its acquisition by Encana Corporation. He currently serves on the board of the Hill Country Rally for Kids. He holds a Bachelor of Science in Accounting from Oklahoma State University.


Rajen Mahagaokar
Mr. Mahagaokar has been a member of our Board since November 2017. Mr. Mahagaokar is a Vice President of Riverstone Holdings LLC and joined Riverstone in 2015. Prior to joining Riverstone, Mr. Mahagaokar was a co-founder and Partner of Marka, LLC. from 2012 to 2014 and from 2012 to 2013 was an investment professional at Silver Lake Kraftwerk. Mr. Mahagaokar began his career in 2008 in the Investment Banking Division at Goldman Sachs in the Natural Resources group and in the Urban Investment Group, a principal investing strategy. He received his B.A. in Mathematical Economic Analysis from Rice University.


Russell E. Parker
Mr. Parker has been a member of our Board since November 2017. He was the CEO of Phoenix Natural Resources from March 2016 until October 2017. Prior to that time, Mr. Parker was the President of Chief Oil & Gas LLC from March 2015 until December 2015, and prior to becoming President, was Vice President of Engineering and Operations from October 2014 until March 2015 and Vice President of Engineering from November 2012 until October 2014. From January 2001 to October 2012, Mr. Parker worked in various engineering and asset management capacities for Hilcorp Energy Company. Mr. Parker received his BS in Petroleum and Geosystems from the University of Texas at Austin where he also was recognized as an Outstanding Young Graduate of the Cockrell School of Engineering as well as Distinguished Alumnus of the Petroleum Engineering Department.


Robert C. Reeves
Mr. Reeves has been a member of our Board since December 2017. He previously served as Athlon Energy's Chairman, President, and CEO since its formation in August 2010 through to its $7.1 billion sale to Encana in November 2014. Mr. Reeves was Senior Vice President, Chief Financial Officer and Treasurer of Encore Acquisition Company and Encore Energy Partners until the $4.5 billion sale of both companies to Denbury Resources Inc. in March 2010. Prior to joining Encore, Mr. Reeves served as Assistant Controller for Hugoton Energy Corporation. Since its formation in August 2015 until present, Mr. Reeves has served on the Board of Directors for privately held Incline Niobrara Partners LP which focuses on acquiring oil and liquids-rich minerals, royalties and non-operated working interest in the DJ basin of Colorado. Since February 2015, Mr. Reeves has served as Chairman and President of Solar Soccer Club, a private 501(c)3 non-profit organization focused on youth soccer development in the Dallas Fort Worth area. Mr. Reeves received his Bachelor of Science degree in accounting from the University of Kansas and is a Certified Public Accountant.


Giljoon Sinn
Mr. Sinn has been a member of our Board since February 2017. Mr. Sinn joined Korea National Oil Corporation (KNOC) in 1996 and worked in the Drilling/Subsea and New Venture Business groups where he concentrated on production engineering, well intervention/re-entry, drilling/completion, subsea operations and managed offshore production assets in Vietnam. He is currently serving as President and a board member of KNOC Eagle Ford Corporation. Mr. Sinn received his master's degree in Petroleum Engineering from the University of Adelaide, Australia.


Robert M. Tichio
Mr. Tichio has been a member of our Board since September 2013. Mr. Tichio is a Partner of Riverstone Holdings LLC and joined Riverstone in 2006. Prior to joining Riverstone, Mr. Tichio was in the Principal Investment Area of Goldman Sachs which manages the firm's private corporate equity investments. Mr. Tichio began his career at J.P. Morgan in the Mergers & Acquisitions group where he concentrated on assignments that included public company combinations, asset sales, takeover defenses and leveraged buyouts. In addition to serving on the boards of a number of Riverstone portfolio companies and their affiliates, Mr. Tichio has been a director of Centennial Resource Development, Inc. since October 2016. Mr. Tichio previously served as a member of the board of directors of Gibson Energy (TSE:GEI) from 2008 to 2013, Midstates Petroleum Company, Inc. from 2012 to 2015 and Northern Blizzard Resources Inc. from June 2011 to May 2017. He holds an MBA from Harvard Business School and a bachelor's degree from Dartmouth College.


Donald A. Wagner
Mr. Wagner has been a member of our Board since August 2013 and previously served as a member of the Board of Managers of our predecessor entity, EPE Acquisition, LLC, from May 2012 to August 2013. Mr. Wagner is a Managing Director of Access Industries, having been with Access since 2010. He is responsible for sourcing and executing new investment opportunities in North America, and he oversees Access' current North American investments. From 2000 to 2009, Mr. Wagner was a Senior Managing Director of Ripplewood Holdings L.L.C., responsible for investments in several areas and heading the industry group focused on investments in basic industries. Previously, Mr. Wagner was a Managing Director of Lazard Freres & Co. LLC and had a 15-year career at that firm and its affiliates in New York and London. He is a board member of Access portfolio company Warner Music Group and was on the board of NYSE-listed RSC Holdings from November 2006 until August 2009. Mr. Wagner graduated summa cum laude with an AB in physics from Harvard College.


Rakesh Wilson
Mr. Wilson has been a member of our Board since August 2013 and previously served as a member of the Board of Managers of our predecessor entity, EPE Acquisition, LLC, from May 2012 to August 2013. Mr. Wilson is a Senior Partner of Apollo and joined Apollo in 2009. Prior to joining Apollo, Mr. Wilson was at Morgan Stanley's Commodities Department in the principal investing group responsible for generating, evaluating and executing investment ideas across the energy sector. Mr. Wilson began his career at Goldman Sachs in equity research and then moved to its investment banking division in New York and Asia. Mr. Wilson currently serves on the board of directors of certain private companies, including American Petroleum Partners, LLC, CSV Midstream Solutions GP LLC, Jupiter Resources GP LLC, Resource Energy Partners, LLC, and Express Energy Services, LLC. He previously served as a director of Athlon Energy Inc., Parallel Petroleum and Talos Energy, LLC. Mr. Wilson graduated from the University of Texas at Austin and received his MBA from INSEAD, Fontainebleau, France.


Executive Sessions of the Board
The Board holds regular executive sessions in which non-management Board members meet without any members of management present. The purpose of these executive sessions is to promote open and candid discussion among the non-management directors. Alan R. Crain, Chairman of the Board, presides over all executive sessions of the Board, including non-management executive sessions and executive sessions of the independent directors.