Richard D. Calder

Richard D. Calder Jr. is GTT Communications, Inc.’s President and Chief Executive Officer, appointed by GTT’s board of directors effective May 2007. He brings over two decades of experience in the telecommunications arena to GTT. In his role, Mr. Calder has full strategic and operational responsibility for the company and also serves as a director on the company’s board of directors. Mr. Calder joined GTT from InPhonic, Inc., a leading provider of wireless services and products, where he served as the President and Chief Operating Officer. Prior to InPhonic, Mr. Calder was President of Business Enterprise & Carrier Markets at Broadwing Communications. He held senior management positions at Winstar Communications, and prior to Winstar, Mr. Calder co-founded GO Communications, a wireless communications company. In his early career, Mr. Calder held various marketing and business development positions at MCI Communications, and various marketing and engineering positions at Tellabs, Inc. Mr. Calder received a Bachelor of Science in electrical engineering from Yale University and an MBA from the Harvard Business School.