Ardelyx (ARDX) CEO Michael Raab Sells Shares

What Happened
Michael G. Raab, President & CEO and a director of Ardelyx, sold a total of 58,574 shares on 2026-08-21 in multiple open-market transactions. The trades were reported at a weighted average price of $3.86 per share (range $3.648–$3.984), producing proceeds of about $225,914. The dispositions were made to cover tax withholding on vested restricted stock units (RSUs).

Key Details

• Transaction date: 2026-08-21; Form 4 filed: 2026-08-25.
• Individual trades reported: 15,009 shares @ $3.86 ($57,888); 15,976 shares @ $3.86 ($61,618); 8,411 shares @ $3.86 ($32,440); 19,178 shares @ $3.86 ($73,968). Weighted average price $3.86; traded prices ranged $3.648–$3.984.
• Shares owned after the transaction: not specified in the data provided in this summary.
• Notable footnotes: F1 — sales were automatic sell-to-cover upon RSU vesting to satisfy tax withholding (reporting person can provide exact breakdown of trades/prices on request). F2 — some shares are held directly by Michael G. Raab as trustee of his living trust. F3 — some shares are owned by trusts for the benefit of the reporting person’s children.

Context
These sales are tax-withholding transactions tied to RSU vesting (routine, automatic sell-to-cover) rather than discretionary open-market selling for investment reasons. For retail investors, purchases by insiders can be a stronger signal than automatic sales; these transactions primarily reflect compensation tax mechanics.