John J. Christmann IV

Chief Executive officer and President

JOHN J. CHRISTMANN IV was appointed the company’s chief executive officer and president, and joined the Company’s Board of Directors effective January 20, 2015.

Mr. Christmann previously served as the company’s executive vice president and chief operating officer, North America, since January 2014.

From January 2010 through December 2013, he served as region vice president, Permian Region. From January 2004 through December 2009, he served as vice president, Business Development, and from April through December 2003, he served as production manager for the Gulf Coast Region. Prior to that, Mr. Christmann held various positions of increasing responsibility in the business development area since joining the company in 1997.

Previously, Mr. Christmann was employed by Vastar Resources/ARCO Oil and Gas Company in business development, crude oil marketing, and various production, operational, and reservoir engineering assignments.

Mr. Christmann received his bachelor’s degree in petroleum engineering from the Colorado School of Mines and Master of Business Administration from Southern Methodist University.

With over 30 years in the oil and gas industry, including over 21 years at the company leading both operational and staff functions and most recently serving as chief executive officer, Mr. Christmann has the proficiency and depth to manage and operate a large-scale oil and gas exploration and production company.

Mr. Christmann’s extensive experience in the oil and gas industry has provided him with an in-depth understanding of successful execution and operational management in the field, an appreciation and talent for value-added merger and acquisition activity, and the expertise to oversee the strategic direction of a large, publicly traded company.

His experience, coupled with his thorough knowledge and understanding of the company’s assets and unique operations, complement Mr. Christmann’s management strengths and enable him to lead the company through the complexities of day-to-day operations as well as the macro-economic impact of commodity prices.

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