Rebecca Blalock has served on our board of directors since June 2016. Ms. Blalock is a partner at Advisory Capital LLC, which provides strategic consulting in the areas of energy and information technology. She has served in that role since October 2011. From October 2002 to October 2011, Ms. Blalock was Senior Vice President and Chief Information Officer of Southern Company, a Fortune 500 energy company. From 1979 to October 2002, Ms. Blalock served in various positions at Georgia Power and Southern Company Services, which are subsidiaries of Southern Company. Ms. Blalock’s management experience during her tenure at Georgia Power included serving as Vice President of Community and Economic Development from January 2000 to October 2002 and Director, Corporate Communication from February 1996 to February 2000. Ms. Blalock currently serves on the Board of Directors of The Electric Power Research Institute as a member of its audit and executive committees. She has also served on the Board of Directors of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (NYSE:HASI), including on its Compensation Committee since March 15, 2017; She will also start serving on its Finance and Risk Committee effective May 15, 2017. She also serves on the Advisory Boards of Catavolt, Gigabark and Sol America. Ms. Blalock is also a Trustee of the Woodruff Arts Foundation and serves on the Board of Councilors of The Carter Center. Ms. Blalock holds a BBA in Marketing from the State University of West Georgia, an MBA in Finance from Mercer University and completed the Program for Management Development (PMD) at Harvard Business School.

Robert M. Gervis has served on our board of directors since January 2011. Mr. Gervis has been a self-employed advisor and investor since April 2009, as well as a member of various public and private company boards of directors. Prior to April 2009, Mr. Gervis served in various senior executive positions at Fidelity Investments from July 1994 to March 2009. Mr. Gervis’ management experience during his tenure with Fidelity Investments included serving as (i) Chief Executive Officer of an oil and natural gas exploration and production company from December 2002 to March 2006; (ii) Chief Operating Officer of an international, full-service real estate development and investment company from May 2002 to June 2003; (iii) Managing Director of a private equity division from March 2002 to March 2006, which invested in a broad range of industries, including technology, biotechnology, real estate, oil and gas exploration and production and telecommunications; and (iv) President of Ballyrock Investment Advisors from April 2006 to March 2009, a registered investment adviser which managed Fidelity Investments’ structured credit business. Prior to joining Fidelity Investments, Mr. Gervis was a partner at the law firm of Weil, Gotshal & Manges. He currently is an investor in, and occasionally serves on the boards of, private companies primarily in the Boston area. Mr. Gervis previously served as a director of Axiall Corporation (NYSE: AXLL), and Tronox Incorporated (NYSE: TROX). Mr. Gervis holds a BS in Industrial Engineering from Lehigh University and a JD from The George Washington University. Mr. Gervis also is a CFA charter holder.

Steven R. Mitchell has served on our board of directors since August 2009. Mr. Mitchell has served as the Chief Executive Officer of Argonaut Private Capital L.P since July 2016 prior to which he was the managing director of Argonaut Private Equity, LLC, or Argonaut, since November 2004. Prior to joining Argonaut, Mr. Mitchell was a principal in both Radical Incubation and 2929 Entertainment. He currently serves on the boards of directors of several privately owned companies, including Global Client Solutions, LLC; Stepstone Group; Green Hills Software, Inc.; S&R Compression, LLC; DMB Pacific, LLC; Sanford Energy, Inc.; Norberg-IES, LLC; Otis Eastern Services, LLC; Specific Systems, LLC; Applied Industrial Machining, LLC; The Fred Jones Companies, LLC; Falcon Flowback Services, LLC; Alkami Technology, Inc.; Downing Wellhead Equipment, LLC; Pivot3, Inc. and Global Technology Partners, LLC. From 1996 to 1999, Mr. Mitchell was a corporate attorney at Gibson, Dunn & Crutcher LLP. Mr. Mitchell holds a BBA in Marketing from Baylor University and a JD from the University of San Diego School of Law.

Mark L. Noetzel has served on our board of directors since December 2009. Mr. Noetzel has worked as a consultant to a number of public and private companies since May 2009. From June 2007 to May 2009, Mr. Noetzel was President and Chief Executive Officer of Cilion, Inc., a biofuels company. Prior to joining Cilion in 2007, he had served in several senior positions at BP plc, including Group Vice President, Global Retail, from 2003 until 2007, Group Vice President, B2B Fuels and New Markets, during 2001 and 2002 and Group Vice President, Chemicals, from 1997 until 2001. Prior to those senior management roles with BP plc, Mr. Noetzel served in other management and non-management roles with Amoco Corporation from 1981 until BP acquired Amoco in 1998. Mr. Noetzel served on the board of directors of Axiall Corporation (NYSE: AXLL) from September 2009 until Axiall was acquired by Westlake Chemical Corporation in August 2016. Mr. Noetzel served as Chairman of Axiall from January 2010 to March 2016. Mr. Noetzel also currently serves on the board of Siluria Technologies Inc., a privately owned technology company. Mr. Noetzel holds a BA in Political Science from Yale University and an MBA from the Wharton School at University of Pennsylvania.

William P. Noglows has served on our board of directors since our initial public offering in June 2014 and previously served on our board of directors from January 2011 to April 2013. Mr. Noglows has served as Chairman of the Board of Cabot Microelectronics Corporation since November 2003 and as President and Chief Executive Officer from November 2003 until December 2014. Mr. Noglows also is a director of Littelfuse, Inc. From 1984 through 2003, Mr. Noglows served in various management positions at Cabot Corporation, culminating in serving as an executive vice president and general manager. Mr. Noglows had previously served as a director of Cabot Microelectronics from December 1999 until April 2002. Mr. Noglows received his B.S. in Chemical Engineering from the Georgia Institute of Technology.

Richard F. Reilly has served on our board of directors since July 2010. For 31 years prior to his retirement in 2009, Mr. Reilly specialized in audits of manufacturing, technology and distribution companies with KPMG LLP, with 28 years in the role of senior audit partner. Prior to his tenure with KPMG LLP Mr. Reilly worked in private industry, serving in various accounting management roles in technology and manufacturing companies. Mr. Reilly also served for ten years in the U.S. Army reserve as a combat engineer officer. Mr. Reilly currently serves as a member of the board of trustees and as chair of the audit committee of Perkins School for the Blind, a non-profit institution headquartered in Boston, Massachusetts and as a member of the finance and audit committee for The Clergy Funds of the Archdiocese of Boston, and since November 2014 on the board of directors and as chair of the audit committee of AquaVenture Holdings Limited (NYSE:WAAS). From November 2012 to December 2013, Mr. Reilly also served as a consultant to a Fortune 500 company related to finance, controls and governance issues at its subsidiary in India. Mr. Reilly holds a BS in Business Administration from Northeastern University and is a Certified Public Accountant.

Donald R. Young has been our President, Chief Executive Officer and a member of our board of directors since November 2001. Prior to joining us, Mr. Young served as Chief Executive Officer of HighWired, a leading venture capital backed software and e-learning company. Prior to that, Mr. Young worked in the United States and abroad in a broad range of senior operating roles for Cabot Corporation, a leading global specialty chemical company. Prior to Cabot Corporation, Mr. Young worked in the investment business at Fidelity Management & Research. Mr. Young holds a BA from Harvard College and an MBA from Harvard Business School.