People: Constellation Energy Partners LLC (CEP)

Mr. Richard S. Langdon has been appointed as Independent Chairman of the Board of Managers of Constellation Energy Partners LLC., since October 24, 2011. He has been an independent member of board of managers and audit, compensation, conflicts, and nominating and governance committees and chair of audit committee since November 2006 and the chairman of board of managers since October 2011. Mr. Langdon is also currently the President, Chief Executive Officer and Chairman of KMD Operating Company LLC (“KMD Operating”), a position held since November 2011, and President and Chief Executive Officer of Sigma Energy Ventures, LLC (a position held since November 2007), each of which is a privately held exploration and production company. Mr. Langdon was the President and Chief Executive Officer of Matris Exploration Company L.P., a privately held exploration and production company (“Matris Exploration”), from July 2004 and Executive Vice President and Chief Operating Officer of KMD Operating from August 2009 until the merger of Matris Exploration into KMD Operating in November 2011, which merger was effective January 2011. From 1997 until 2002, Mr. Langdon served as Executive Vice President and Chief Financial Officer of EEX Corporation, a publicly traded exploration and production company that merged with Newfield Exploration Company in 2002. Prior to that, Mr. Langdon held various positions with the Pennzoil Companies from 1991 to 1996, including Executive Vice President—International Marketing—Pennzoil Products Company; Senior Vice President—Business Development—Pennzoil Company; and Senior Vice President—Commercial & Control—Pennzoil Exploration & Production Company. Mr. Langdon also serves as a director of Gasco Energy, Inc., a publicly traded exploration and production company.