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Mr. Hall serves as Chairman of the Board of Archrock, Inc., a natural gas compression services company. At predecessor companies to Archrock, Inc., Mr. Hall served as Vice Chairman of the Board and Lead Independent Director (2013-2015) and as Chairman of the Board (2007-2013) of Exterran Holdings, Inc., and as Chairman of the Board (2005-2007) of Hanover Compressor Company. Mr. Hall is also a professor in the Master of Science in Financial Analysis program at Gordon College and served as the interim Chief Financial Officer of the College for four months during 2018. Mr. Hall retired as Managing Director from Credit Suisse, a brokerage services and investment banking firm, where he was employed from 1987 through 2002. While at Credit Suisse, Mr. Hall served as Senior Oil Field Services Analyst and Co-Head of the Global Energy Group. Mr. Hall was a director of Hydril Company, an oil and gas service company specializing in pressure control equipment and premium connections for tubing and casing, until its merger with Tenaris S.A. in May 2007 and was a director of Grant Prideco, Inc., a drilling technology and manufacturing company, until its acquisition by National Oilwell Varco, Inc. in April 2008. He has also served as a director of multiple private companies. Mr. Hall brings to our Board financial and analytical expertise and investment banking experience, with a focus on the energy sector, and experience as a director with board leadership roles for multiple companies.