Form 4 Filing for Michael Raab

This filing details stock transactions made by Michael Raab, President & CEO of Ardelyx, Inc. On June 15, 2026, Raab acquired 20,833 shares of common stock through a 10b5-1 trading plan at a price of $0.99 per share. In a separate transaction the same day, Raab disposed of 41,666 shares of common stock at a weighted average price of $5.6724 per share. The filing also notes the exercise of a stock option for 20,833 shares. Shares acquired and disposed of were made under a pre-arranged trading plan. Some shares are held indirectly through family trusts.