Press Release

GTT Appoints Simon Waller to Lead EMEA and APAC Carrier Business

McLean, VA, March 22, 2016

GTT Communications, Inc. (NYSE:GTT), the leading global cloud networking provider to multinational clients, today announced the appointment of Simon Waller as vice president of carrier, EMEA and APAC. In his role, Waller will expand GTT carrier sales through acquisition of new business and development of existing relationships. Waller brings over 20 years of sales and management experience to GTT, including serving as head of sales for the EMEA region for the Global IP Network business unit at NTT Communications. In this role, Waller led a sales team that was key to the company’s expansion, spearheading the launch of 17 new regional points of presence and the development of IP business with several of the largest carriers in Europe. Waller’s industry tenure also includes sales leadership positions at TalkTalk Business, PSINet and Claranet. “Simon has an excellent track record in sales leadership, specifically in the EMEA region,” said Rick Calder, GTT president and CEO. “This expertise, combined with his strong carrier relationships and deep knowledge of the IP transit market, will be critical to GTT as we continue to expand on a global basis.” About GTT GTT’s global Tier 1 IP network enables clients to connect to any location in the world and with any application in the cloud. Our cloud networking services provide a better way for multinational clients to reach the cloud. Clients trust us to deliver secure solutions with simplicity, speed and agility. For more information, visit www.www.gtt.net. GTT Media Inquiries: Ann Rote, +1-703-677-9941 [email protected]