 New York, New York--Newsfile Corp. - January 23, 2021 - Rosen Law Firm, a global investor rights law firm, reminds purchasers of the securities of GTT Communications, Inc. NYSE: GTT between May 5, 2016 and November 9, 2020, inclusive the Class Period, of the important March 15, 2021 deadline in the securities class action first filed by the firm. The lawsuit seeks to recover damages for GTT investors under the federal securities laws.To join the... 