Form 4 Filing for ARDELYX, INC.

This filing details transactions by reporting owner Cadoret-Manier Onaiza, a director at ARDELYX, INC. On June 16, 2026, Onaiza acquired 26,455 shares of Common Stock and was granted stock options to purchase 39,715 shares of Common Stock. The acquisition of Common Stock was part of the Issuer's Non-Employee Director Compensation Program, and the stock options were also issued under the same program. The options vest over time, with accelerated vesting on the next annual stockholder's meeting. The filing also includes a Power of Attorney document, appointing specific officers of Ardelyx, Inc. to execute necessary SEC filings on behalf of the reporting owner.