 NEW YORK--BUSINESS WIRE--WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of the securities of Tarena International, Inc. NASDAQ: TEDU between August 16, 2016 and November 1, 2019, inclusive the Class Period, of the important August 23, 2021 lead plaintiff deadline. SO WHAT: If you purchased Tarena securities during the Class Period you may be entitled to compensation without payment of any out of pocket fees or costs through a contingency fee arrangement. WHAT 