Grant Defehr

Grant DeFehr is an experienced executive in the energy and chemical sectors, currently serving as Vice President of Business Development at Mammoth Energy Services since January 2017. Prior roles include President at MOON Chemical Products, Inc. and SERVA, as well as Vice President of Business Development for MOON. Grant DeFehr has also held positions in corporate development and as Chief Operating Officer at various companies such as Everest Operations Management and Diamondback Energy Services. Educational qualifications include a Master of Public Administration from Harvard Kennedy School, a Juris Doctor from Georgetown University Law Center, and a Bachelor of Arts in Government & Foreign Affairs from the University of Virginia. Grant DeFehr is a graduate of Bartlesville High School.