 RADNOR, Pa., Aug. 3, 2021 PRNewswire -- The law firm of Kessler Topaz Meltzer Check, LLP reminds Athira Pharma, Inc. NASDAQ: ATHA Athira investors that securities fraud class action lawsuits have been filed on behalf of those who purchased or acquired Athira common stock: a pursuant andor traceable to the registration statement and prospectus collectively, the Registration Statement issued in connection with Athiras September 2020 initial public offering IPO; andor b between September 18, 2020 and June 17, 2021 , inclusive the Class Period. 