 RADNOR, Pa., Oct. 4, 2021 PRNewswire -- The law firm of Kessler Topaz Meltzer Check, LLP reminds investors that a securities fraud class action lawsuit has been filed against Annovis Bio, Inc. NYSE: ANVS Annovis on behalf of those who purchased or acquired Annovis securities betweeen May 21, 2021 and July 28, 2021 , inclusive the Class Period. 