Ardelyx (ARDX) awards RSUs and 149,185-share option to HR chief

Rhea-AI Filing Summary

Ardelyx, Inc. reported an equity compensation grant to its Chief Human Resources Officer effective January 23, 2026. The officer received 99,455 restricted stock units (RSUs), with each RSU settling into one share of common stock upon vesting, increasing the officer’s directly held common stock to 265,455 shares. On the same date, the officer was also granted a stock option for 149,185 shares of common stock at an exercise price of $7.77 per share. The option vests in 48 equal monthly installments starting from January 23, 2026, conditioned on continued employment or service, and will remain exercisable until January 23, 2036.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Brady James Parker

(Last) (First) (Middle)

C/O ARDELYX, INC.

400 FIFTH AVENUE, SUITE 210

(Street)

WALTHAM MA 02451

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ARDELYX, INC. [ ARDX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Human Resources Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/23/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/23/2026		A		99,455(1)	A	$0	265,455	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$7.77	01/23/2026		A		149,185		(2)	01/23/2036	Common Stock	149,185	$0	149,185	D

Explanation of Responses:

1. 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.

2. 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.

	/s/ Elizabeth Grammer, Attorney-in-Fact for James Parker Brady	01/26/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transaction did Ardelyx (ARDX) report in this Form 4?

Ardelyx reported that its Chief Human Resources Officer received grants of restricted stock units and a stock option on January 23, 2026 as part of equity compensation.

How many Ardelyx (ARDX) RSUs were granted to the Chief Human Resources Officer?

The officer received 99,455 restricted stock units (RSUs), each convertible into one share of Ardelyx common stock upon vesting.

What stock option grant did Ardelyx (ARDX) make to its HR chief?

The officer was granted a stock option for 149,185 shares of Ardelyx common stock with an exercise price of $7.77 per share.

How do the Ardelyx (ARDX) stock options vest for the officer?

The option vests in 48 equal monthly installments on each monthly anniversary of January 23, 2026, subject to the officer’s continued employment or service with Ardelyx on each vesting date.

When do the Ardelyx (ARDX) stock options granted to the HR chief expire?

The stock option granted on January 23, 2026 is scheduled to expire on January 23, 2036, if not exercised earlier.

How many Ardelyx (ARDX) common shares does the officer own after these grants?

Following the RSU grant, the officer is reported as directly beneficially owning 265,455 shares of Ardelyx common stock.