 Boston, Massachusetts--Newsfile Corp. - April 20, 2021 - Block Leviton LLP a national securities litigation firm, reminds investors that it has filed a class action lawsuit on behalf of shareholders against Athenex, Inc. NASDAQ: ATNX and certain of its executives for securities fraud. Investors who purchased Athenex shares between August 7, 2019 and February 26, 2021, and who lost money are strongly encouraged to contact Block Leviton attorneys at 617 398-5600,... 