[Form 3] ARDELYX, INC. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Ardelyx (ARDX) insider James Parker Brady filed an initial statement of beneficial ownership. He reports 166,000 shares of Common Stock (including RSUs that settle one share per RSU upon vesting) and a stock option for 250,000 shares at $3.93 expiring on 06/03/2035.

The option vests 25% on 06/03/2026, with the balance vesting in 36 equal monthly installments, subject to continued service. Brady serves as Chief Human Resources Officer. The event date is 06/18/2025.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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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. Date of Event Requiring Statement (Month/Day/Year)
06/18/2025

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

4. 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

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	166,000(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	(2)	06/03/2035	Common Stock	250,000	$3.93	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. Twenty Five Percent (25%) of the shares subject to the option vest on June 3, 2026 and the remaining shares subject to the option vest in 36 successive, equal monthly installments thereafter, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

Remarks:

Exhibit 24.1 - Power of Attorney

	/s/ Elizabeth Grammer, Attorney-in-Fact for James Parker Brady	10/17/2025
	** 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 5 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Ardelyx (ARDX) disclose in this Form 3?

An insider, James Parker Brady, reported holdings of 166,000 shares and a stock option for 250,000 shares at $3.93 expiring 06/03/2035.

Who is the reporting person and role at ARDX?

James Parker Brady, Chief Human Resources Officer.

How many ARDX shares are beneficially owned?

Table I lists 166,000 shares of Common Stock, noted as RSUs that settle one share per RSU upon vesting.

What are the key terms of the ARDX stock option?

It covers 250,000 shares at an exercise price of $3.93, expiring on 06/03/2035.

How does the ARDX option vest?

Vesting is 25% on 06/03/2026, then the remainder in 36 equal monthly installments, subject to continued service.

What is the event date for this Form 3?

The stated event date is 06/18/2025.