Our Board of Directors

Mike Ellis
Director, Founder, Chairman and Chief Operating Officer

Director Since: 1987

Mr. Ellis founded Alta Mesa in 1987 after beginning his career with Amoco, and is Chairman and Chief Operating Officer, as well as Vice President of Engineering. Mr. Ellis manages all day-to-day engineering and field operations of Alta Mesa. He built the Company's asset base by starting with small earn-in exploitation projects, then progressively grew the Company with successive acquisitions of fields from major oil companies and consistent success in exploration and development drilling. He has over 30 years experience in management, engineering, exploration, and acquisitions and divestitures in the Gulf Coast, Midcontinent and West Texas regions. He has a Bachelor of Science in Civil Engineering from West Virginia University.

Michael McCabe
Director and Chief Financial Officer

Director Since: 2014

Mr. McCabe, our Chief Financial Officer, joined Alta Mesa in September 2006. Mr. McCabe has over 25 years of corporate finance experience, with a focus on the energy industry. He has served in senior positions with Bank of Tokyo, Bank of New England, and Key Bank.Mr. McCabe holds a Bachelor of Science in Chemistry and Physics from Bridgewater State University, a Master of Science in Chemical Engineering from Purdue University and a Master of Business Administration in Financial Management from Pace University.

Don Dimitrievich

Director Since: 2014

Mr. Dimitrievich is a Managing Director at HPS, an alternative investment management organization that together with its affiliates manages approximately $29 billion in capital for institutional investors, pension funds,endowments and foundations. At HPS, Mr. Dimitrievich oversees HPS’s direct credit investment strategy for the energy and power sectors. HPS has invested over $1.5 billion in direct energy-related investments. Prior to joining HPS in 2012, Mr. Dimitrievich was a Managing Director of Citi Credit Opportunities, a credit-focused principal investment group. At Citi Credit Opportunities, Mr. Dimitrievich oversaw the energy and power portfolio and invested over $800 million in mezzanine, special situation and equity co-investments and secondary market opportunities. Mr. Dimitrievich began his career as a corporate attorney in the New York office of Skadden, Arps, Slate, Meagher & Flom LLP focusing on energy mergers and acquisitions and capital markets transactions. Mr. Dimitrievich also serves on the board of Energy & Exploration Partners, Inc. Mr. Dimitrievich has a Law degree with Great Distinction from McGill University in Montreal, Canada and earned a Chemical Engineering degree with Great Distinction from Queen’s University in Kingston, Canada.

Gene Cole
Director, Vice President and Chief Technical Officer

Director Since: 2015

Mr. Cole currently serves in the position of Vice President, Chief Technical Officer for Alta Mesa. Mr. Cole has over 25 years' of extensive domestic and international experience in well completion, and well stimulation design and execution. He started his career with Dowell Schlumberger as a Field Engineer and served in numerous increasingly responsible positions in the areas of field operations, engineering and management. Prior to joining Alta Mesa in 2007, Mr. Cole was the Senior Sales Engineer for Well Services for Schlumberger Oilfield Services. Mr. Cole earned his Bachelor of Science in Petroleum Engineering from Marietta College in Ohio.

Hal Chappelle
Director, President and Chief Executive Officer

Director Since: 2004

Mr. Chappelle joined Alta Mesa as President and CEO in November 2004 and has led the Company during a period of significant growth, building a strong management and technical team, focusing on the greatest opportunities, making strategic acquisitions and restructuring the Company's financing.
He has over 30 years in field operations, engineering, management, marketing and trading, acquisitions and divestitures, and field re-development in collaboration with majors including Exxon and Chevron. He has worked for Louisiana Land & Exploration Company, Burlington Resources, Southern Company, and Mirant. Mr. Chappelle retired as a Commander from the U.S. Navy Reserve. He has a Bachelor of Chemical Engineering from Auburn University and a Master of Science in Petroleum Engineering from The University of Texas at Austin.

Mickey Ellis

Director Since: 1987

Mrs. Ellis has served as a director since our inception in 1987. Mrs. Ellis is actively involved in the leadership of charitable organizations, as a Board Member of The Confessing Movement of the United Methodist Church, Committee Member on several committees within Grace Fellowship United Methodist Church, and Building Relocation Coordinator for Mission Bend Christian Academy. She is a major fundraiser for the Susan G. Komen Foundation, student at the Bible Seminar Master of Divinity, and an active volunteer for CanCare. Ms. Ellis is the spouse of Michael E. Ellis, our Chairman, Chief Operating Officer and Vice President of Engineering.

William W. McMullen

Director Since: 2016

Mr. McMullen was appointed to the board of directors as Bayou City’s director nominee in August 2016. Mr. McMullen is the founder and managing partner of Bayou City Energy L.P. (“BCE LP”), an oil and gas focused private equity firm based in Houston, Texas. Mr. McMullen founded BCE LP in 2015 after successfully managing a smaller private equity vehicle, Bayou City Energy Partners (“BCEP”), focused on investments in the oil and gas sector. Prior to BCEP, Mr. McMullen served as Vice President at White Deer Energy from August 2010 to July 2012, an oil and gas focused private equity firm, where he was responsible for origination, analysis, structuring and execution of upstream investments. Before White Deer Energy, Mr. McMullen served as an Associate at Denham Capital from July 2008 to June 2010. Prior to Denham Capital, Mr. McMullen served as an Analyst in UBS Investment Bank’s Global Energy group. Mr. McMullen earned his Bachelor’s degree in Economics, with Honors, from Harvard University.

Mark Stoner

Director Since: 2016

Mr. Stoner is a partner at BCEP, an oil and gas focused private equity firm based in Houston, Texas. Prior to joining BCEP, Mr. Stoner was the Vice President of Finance of our Company. Mr. Stoner joined us in March 2008 and helped oversee our financing. While he was our Vice President of Finance, Mr. Stoner had leadership roles in the initial and subsequent high yield debt offerings as well as its recapitalization by HPS in 2014, and was a member of the acquisition and divestiture team which sourced and evaluated acquisition and divestiture opportunities. Prior to joining us, Mr. Stoner worked as a Financial Analyst at Leor Energy. Mr. Stoner earned his Bachelor’s degree in Business from Southwestern University.