NEW YORK, Sept. 18, 2026 (GLOBE NEWSWIRE) -- Gainey McKenna & Egleston announces that a securities class action lawsuit has been filed in the United States District Court for the District of Massachusetts on behalf of all persons or entities who purchased or otherwise acquired Ardelyx, Inc. (“Ardelyx” or the “Company”) (NASDAQ: ARDX) securities between January 13, 2025 and August 6, 2026, inclusive (the “Class Period”).