Mr. Mullins serves as the Managing Director and Co-Chief Executive Officer of Lime Rock Resources, a company that he co-founded in 2005, which acquires, operates and improves lower-risk oil and natural gas properties. From May 2011 through October 2015, he also served as the Co-Chief Executive Officer and Chairman of the Board of Directors of LRE GP, LLC, the general partner of LRR Energy, L.P., a company which operates, acquires, exploits and develops producing oil and natural gas properties.
Prior to co-founding Lime Rock Resources, Mr. Mullins served as a Managing Director in the investment banking division of Goldman Sachs where he led numerous financing, structuring and strategic advisory transactions in the division's natural resources group.