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$ Value

$0

Shares

137,945

Price

$0

Filed

Jan 26

Insider

Name

Foster Eric Duane

Title

Chief Commercial Officer

CIK

0002034148

Roles

Officer

Transaction Details

Transaction Date

2026-01-23

Code

A

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

436,409

Footnotes

Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) shares of Common Stock for each one (1) RSU upon the vesting thereof. | Includes the purchase of 2,780 shares under the Ardelyx Employee Stock Purchase Plan on August 31, 2025. | The option becomes exercisable as it vests and the shares subject to the option vest in 48 successive, equal monthly installments on each monthly anniversary of January 23, 2026, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

Filing Info

Accession No.

0001610717-26-000023

Form Type

4

Issuer CIK

0001437402

Foster Eric Duane's History

Date Ticker Type Value
2026-01-23 ARDX A $0
2026-01-23 ARDX A $0
2025-11-21 ARDX $32K
2025-08-21 ARDX $91K
2025-05-20 ARDX $10K

Other Insiders at ARDX (90d)

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Bishop John E
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Williams Laura A
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Kelliher Mike
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2026-01-23
Foster Eric Duane
Chief Commercial Officer
2026-01-23
Reilly Joseph James
See Remarks
2026-01-23
Brady James Parker
Chief Human Resources Officer
2026-01-23
Hohenleitner Susan
Chief Financial Officer
2026-01-23