GTT’s President & CEO, Rick Calder to Present at the 14th Annual B. Riley Investor Conference

McLean, VA, May 14th, 2013 — GTT (OTCQB: GTLT), the premiere cloud network provider to clients in over 80 countries worldwide, announced today that President and CEO, Rick Calder, will present at the B. Riley Investor Conference on Wednesday May 22, 2013. Mr. Calder will present GTT’s growth strategy and members of GTT management will be available to hold one-on-one meetings with investors to review GTT’s progress.

B. Riley’s 14th Annual Investor Conference will take place at the Loews Santa Monica Beach Hotel on May 20 – 22, 2013. This invitation-only event is expecting over 1,000 attendees and will feature nearly 200 presenters of small and mid-cap companies, in a broad range of consumer and technology sub-sectors.

About GTT

GTT is the premiere cloud network provider to the world. Powered by our global Ethernet and IP backbone, GTT operates the most interconnected network on the globe. With 15 years of proven experience, GTT delivers simplicity, speed and agility, with an absolute client focus. For more information visit GTT at www.gt-t.net.

For GTT Media Inquiries, please contact:
Michelle Reilly
Director, Marketing Operations
1.703.442.5582
michelle.reilly@gt-t.net

For GTT Investor Relations Inquiries, please contact:
Nazir Rostom
Director, Finance
1.703.442.5586
nazir.rostom@gt-t.net