 Radnor, Pennsylvania--Newsfile Corp. - September 20, 2021 - The law firm of Kessler Topaz Meltzer Check, LLP reminds investors that a securities fraud class action lawsuit has been filed against Ardelyx Inc. NASDAQ: ARDX Ardelyx on behalf of those who purchased or acquired Ardelyx securities between August 6, 2020 and July 19, 2021, inclusive the Class Period.Investor Deadline Reminder: Investors who purchased or acquired Ardelyx securities during the Class Period may,... 