 New York, New York--Newsfile Corp. - January 29, 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 lead plaintiff deadline. SO WHAT: If you purchased GTT securities during the Class Period you may be entitled to compensation without payment of any out of pocket... 