ARDELYX, INC. 4

Chief Commercial Officer Eric Duane Foster sold 8,562 shares of Ardelyx, Inc. common stock on August 21, 2026 in automatic sell-to-cover transactions related to RSU vesting.

On August 21, 2026, Ardelyx, Inc. Chief Commercial Officer Eric Duane Foster executed three small open-market sales of common stock totaling 8,562 shares at a weighted-average price of approximately $3.8569 per share, generating proceeds of roughly $33,027. According to the footnote, these sales were automatic sell-to-cover transactions triggered upon the vesting of restricted stock units and conducted solely to satisfy withholding tax obligations, with execution prices ranging between $3.648 and $3.984 per share. Following these routine tax-related sales, Foster continued to hold 409,410 shares of Ardelyx common stock, indicating a substantial ongoing equity stake in the company.

Filing Facts

CIK

1437402

Ticker

ARDX

Form

4

Source Type

fda

Accession

0002034148-26-000007

Alert Tier

5