 NEW YORK--BUSINESS WIRE--- ARDX--The law firm of Kirby McInerney LLP reminds investors that a class action lawsuit has been filed in the U.S. District Court for the Northern District of California on behalf of those who acquired Ardelyx, Inc. Ardelyx or the Company NASDAQ: ARDX securities from August 6, 2020 through July 19, 2021, inclusive the Class Period. Investors have until September 28, 2021 to apply to the Court to be appointed as lead plaintiff in the lawsuit. Ardelyx is a special 