J David WARGO has been a non-executive Director since January 2017.

Mr. Wargo currently serves as President of Wargo & Company, Inc., which he founded in 1993.Mr. Wargo has over 40 years of experience in the telecommunications, media, and technology industries. Since March 2015, Mr. Wargo has been a Director of Liberty Broadband Corporation (NASDAQ: LBRDA). Since August 2014, Mr. Wargo has been a Director of Liberty TripAdvisor Holdings, Inc. (NASDAQ: LTRPA). Since September 2008, he has been a director of Discovery Communications, Inc. (NASDAQ: DISCA). Since June 2005, Mr. Wargo has been a Director of Liberty Global plc (NASDAQ: LBTYK). From May 2005 to September 2008, he served as a Director of Discovery Holding Company. Since 2001, he has been a Director of Strayer Education, Inc. (NASDAQ: STRA).

Mr. Wargo graduated with a Masters in Management from the Sloan School of Management at the Massachusetts Institute of Technology, Cambridge, Massachusetts, United States in 1978, and a Masters in Engineering majoring in nuclear engineering in 1976. He has also obtained a Bachelor of Science majoring in Physics from the Massachusetts Institute of Technology in Cambridge, Massachusetts, United States in 1976.