Committee Composition

John A. Weinzierl
Chief Executive Officer and Chairman

John A. Weinzierl has served as our general partner's Chief Executive Officer and Chairman of the board of directors since January 2014.  Previously, he served as President, Chief Executive Officer and Chairman of the board of directors of our general partner from April 2011 to January 2014.  Prior to the completion of our initial public offering in December 2011, Mr. Weinzierl was a managing director and operating partner of NGP from December 2010. From July 1999 to December 2010, Mr. Weinzierl worked in various positions at NGP, where he became a managing director in December 2004. Mr. Weinzierl was appointed a venture partner of NGP from February 2012 to February 2013. From October 2006 until November 2011, Mr. Weinzierl was a director of Eagle Rock Energy G&P, LLC, the indirect general partner of Eagle Rock Energy Partners, L.P., a (i) natural gas gathering, processing and transportation company and (ii) developer of oil and natural gas properties, where he also served on the compensation committee. Mr. Weinzierl is a registered professional engineer in Texas.

W. Donald Brunson
Director

W. Donald Brunson has served as a member of the board of directors our general partner since December 2014.  Subsequent to his retirement in 2012, Mr. Brunson has served as Chairman and Co-Founder of Bank of Houston from 2004 to 2012.  From 2012 to 2014, he served as Chairman Emeritus of Bank of Houston.  From 1996 to 2004, he held positions with American Prudential Capital, Inc.  In 1994 and 1995, he served as Presidet and was  board member and member of the executive management committee with Sunbelt National Bank.  Prior to 1994, Mr. Brunson also held positions with Southwest Bank of Texas, Heights State Bank, Houston National Bank, Allied Bank of Texas and Price Waterhouse & Co.

Member of the Audit Committee
Jonathan M. Clarkson
Director

Jonathan M. Clarkson has served as a member of the board of directors of our general partner since December 2011. Mr. Clarkson has served in the capacity of Chief Financial Officer for Matrix Oil Corporation since May 2012.  Mr. Clarkson served as Chairman of the Houston Region of Texas Capital Bank from May 2009 until his retirement in December 2011. From 2003 to May 2009, he served as President and CEO of the Houston Region of Texas Capital Bank. From May 2001 to October 2002, Mr. Clarkson served as President, Chief Financial Officer and a director of Mission Resources Corp., an independent oil and gas exploration and production company. From 1999 through 2001, Mr. Clarkson served as President, Chief Operating Officer and a director of Bargo Energy Company, a private company engaged in the acquisition and exploitation of onshore oil and natural gas properties, which merged with Mission Resources in May 2001. From 1987 to 1999, Mr. Clarkson served as Executive Vice President and Chief Financial Officer for Ocean Energy Corp. and its predecessor company United Meridian Corporation. From October 2006 until December 2009, Mr. Clarkson served on the board of directors, was chairman of the audit committee, and was a member of the compensation committee of Edge Petroleum Corp., an oil and gas exploration and production company. Mr. Clarkson has served on the board of directors and the audit committee, since March 2012, and the corporate governance committee, since October 2012, of Parker Drilling Company. Since September 2010, Mr. Clarkson has served on the advisory board of Rivington Capital Advisors, LLC, an investment banking firm focused on upstream energy sector investments.

Chair of the Audit Committee
Scott A. Gieselman
Director

Scott A. Gieselman has served as a member of the board of directors of our general partner since September 2011. Mr. Gieselman has been a managing director of NGP since April 2007. From 1988 to April 2007, Mr. Gieselman worked in various positions in the investment banking energy group of Goldman, Sachs & Co., where he became a partner in 2002.

Kenneth A. Hersh
Director

Kenneth A. Hersh has served as a member of the board of directors of our general partner since its formation in April 2011. Mr. Hersh is the Chief Executive Officer of NGP Energy Capital Management and a managing partner of NGP and has served in those or similar capacities since 1989. He currently serves as a director of NGP Capital Resources Company, a business development company that focuses on the energy industry. Mr. Hersh served as a director of Resolute Energy Corporation from September 2009 to March 2012, as a director of Eagle Rock Energy G&P, LLC, the indirect general partner of Eagle Rock Energy Partners, L.P., from March 2006 until June 2011 and Energy Transfer Partners, L.L.C., the indirect general partner of Energy Transfer Partners, L.P., a natural gas gathering and processing and transportation and storage and retail propane company, from February 2004 through December 2009, and served as a director of LE GP, LLC, the general partner of Energy Transfer Equity, L.P., from October 2002 through December 2009. Mr. Hersh currently serves on the Dean's Council of the Harvard Kennedy School and on the Advisory Councils of the Graduate School of Business at Stanford University and The Bendheim Center for Finance at Princeton University. He is also a member of the World Economic Forum where he has been a featured speaker at its annual meeting held in Davos, Switzerland.

P. Michael Highum
Director

P. Michael Highum has served as a member of the board of directors of our general partner since March 2012. Subsequent to his retirement in 2001, he has been primarily involved in managing his private investments. From 2002 to 2006, Mr. Highum served as an advisor to Fidelity Investments, where he helped establish and develop FIML Natural Resources LLC, an oil and gas exploration and production company. He co-founded HS & Associates in 1978, which was the predecessor to the NYSE-listed HS Resources, Inc., an independent oil and gas exploration and production company (later sold to Kerr McGee Corporation in 2001), where he served as President and Director. From 1995 to 2001, Mr. Highum served as a Director (and President in 1999) of the Colorado Oil and Gas Association. Prior to HS & Associates, Mr. Highum practiced corporate law in the San Francisco office of Pillsbury, Madison & Sutro, LLP.

Member of the Audit Committee
Tony R. Weber
Director

Tony R. Weber has served as a member of the board of directors of our general partner since September 2011. Mr. Weber currently serves as Managing Partner and Chief Operating Officer for NGP. Prior to joining NGP in December 2003, Mr. Weber was the Chief Financial Officer of Merit Energy Company from April 1998 to December 2003. Prior to that, he was Senior Vice President and Manager of Union Bank of California's Energy Division in Dallas, Texas from 1987 to 1998. In his role at NGP, Mr. Weber serves on numerous private company boards as well as industry groups, IPAA Capital Markets Committee and Dallas Wildcat Committee. Mr. Weber currently serves on the Dean's Council of the Mays Business School at Texas A&M University and was a founding member of the Mays Business Fellows Program.

  Audit
W. Donald Brunson
W. Donald Brunson
Director

W. Donald Brunson has served as a member of the board of directors our general partner since December 2014.  Subsequent to his retirement in 2012, Mr. Brunson has served as Chairman and Co-Founder of Bank of Houston from 2004 to 2012.  From 2012 to 2014, he served as Chairman Emeritus of Bank of Houston.  From 1996 to 2004, he held positions with American Prudential Capital, Inc.  In 1994 and 1995, he served as Presidet and was  board member and member of the executive management committee with Sunbelt National Bank.  Prior to 1994, Mr. Brunson also held positions with Southwest Bank of Texas, Heights State Bank, Houston National Bank, Allied Bank of Texas and Price Waterhouse & Co.

Jonathan M. Clarkson
Jonathan M. Clarkson
Director

Jonathan M. Clarkson has served as a member of the board of directors of our general partner since December 2011. Mr. Clarkson has served in the capacity of Chief Financial Officer for Matrix Oil Corporation since May 2012.  Mr. Clarkson served as Chairman of the Houston Region of Texas Capital Bank from May 2009 until his retirement in December 2011. From 2003 to May 2009, he served as President and CEO of the Houston Region of Texas Capital Bank. From May 2001 to October 2002, Mr. Clarkson served as President, Chief Financial Officer and a director of Mission Resources Corp., an independent oil and gas exploration and production company. From 1999 through 2001, Mr. Clarkson served as President, Chief Operating Officer and a director of Bargo Energy Company, a private company engaged in the acquisition and exploitation of onshore oil and natural gas properties, which merged with Mission Resources in May 2001. From 1987 to 1999, Mr. Clarkson served as Executive Vice President and Chief Financial Officer for Ocean Energy Corp. and its predecessor company United Meridian Corporation. From October 2006 until December 2009, Mr. Clarkson served on the board of directors, was chairman of the audit committee, and was a member of the compensation committee of Edge Petroleum Corp., an oil and gas exploration and production company. Mr. Clarkson has served on the board of directors and the audit committee, since March 2012, and the corporate governance committee, since October 2012, of Parker Drilling Company. Since September 2010, Mr. Clarkson has served on the advisory board of Rivington Capital Advisors, LLC, an investment banking firm focused on upstream energy sector investments.

P. Michael Highum
P. Michael Highum
Director

P. Michael Highum has served as a member of the board of directors of our general partner since March 2012. Subsequent to his retirement in 2001, he has been primarily involved in managing his private investments. From 2002 to 2006, Mr. Highum served as an advisor to Fidelity Investments, where he helped establish and develop FIML Natural Resources LLC, an oil and gas exploration and production company. He co-founded HS & Associates in 1978, which was the predecessor to the NYSE-listed HS Resources, Inc., an independent oil and gas exploration and production company (later sold to Kerr McGee Corporation in 2001), where he served as President and Director. From 1995 to 2001, Mr. Highum served as a Director (and President in 1999) of the Colorado Oil and Gas Association. Prior to HS & Associates, Mr. Highum practiced corporate law in the San Francisco office of Pillsbury, Madison & Sutro, LLP.

= Chair = Member = Independent Director