 New York, New York--Newsfile Corp. - February 26, 2021 - WHY: 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 lead plaintiff deadline in the securities class action first filed by the firm.SO WHAT: If you purchased GTT securities during the Class Period you may be... 