John E. Bishop - 23 Jan 2026 Form 4 Insider Report for ARDELYX, INC. (ARDX)

Role: Chief Technical and Quality Officer
Signature: /s/ Elizabeth Grammer, Attorney-in-Fact for John Bishop
Issuer symbol: ARDX
Transactions as of: 23 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 26 Jan 2026, 16:22:09 UTC
Previous filing: 17 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Bishop John E	Chief Technical and Quality Officer	C/O ARDELYX, INC., 400 FIFTH AVENUE, SUITE 210, WALTHAM	/s/ Elizabeth Grammer, Attorney-in-Fact for John Bishop	26 Jan 2026	0001308911

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ARDX	Common Stock	Award	$0	+124,330	+57%	$0.000000	342,330	23 Jan 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ARDX	Stock Option (Right to Buy)	Award	$0	+186,500		$0.000000	186,500	23 Jan 2026	Common Stock	186,500	$7.77	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	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.

Remarks:

Chief Technical and Quality Officer