Robert S. Purgason (Bob) is Executive Vice President and Chief Operating Officer of the Crosstex Energy companies, Crosstex Energy, Inc. (NASDAQ: XTXI) and Crosstex Energy L.P. (NASDAQ: XTEX). He has more than 28 years of energy-industry experience. In 2004, Mr. Purgason joined Crosstex Energy Services as Senior Vice President to lead the Treating Division. He was promoted to Executive Vice President and Chief Operating Officer in November 2006. Mr. Purgason began his career with Perry Gas Companies in Odessa working in all facets of Perry’s Treating Business. He spent 19 years with Williams Companies in various Senior Business Development & Operation roles. Mr. Purgason is a member of the Board of Visitors for the College of Engineering and a member of OkChE -The Advisory Board for the School of Chemical, Biological and Materials Engineering for the University of Oklahoma. Mr. Purgason received a Bachelor of Science Chemical Degree with honors from the University of Oklahoma.