ARDELYX, INC. 4

Chief Technical and Quality Officer John E. Bishop sold 19,750 shares of Ardelyx, Inc. common stock in automatic tax-withholding sales tied to RSU vesting.

On 2026-08-21, Ardelyx, Inc. Chief Technical and Quality Officer John E. Bishop executed two open-market sales totaling 19,750 shares of common stock at a weighted average price of approximately $3.8569 per share, for aggregate proceeds of about $76,200. According to the filing, these sales were conducted automatically under a sell-to-cover arrangement associated with the vesting of restricted stock unit awards and were made solely to satisfy applicable tax withholding obligations. Following these routine tax-related sales, Bishop’s direct ownership in Ardelyx common stock decreased to 317,095 shares, representing a remaining equity stake worth roughly $1.22 million based on the reported transaction price.

Filing Facts

CIK

1437402

Ticker

ARDX

Form

4

Source Type

fda

Accession

0001308911-26-000007

Alert Tier

5