Ardelyx director receives RSU and option grants

ARDELYX, INC. director Merdad Parsey reported equity compensation awards rather than open-market trades.

Rhea-AI Filing Summary

ARDELYX, INC. director Merdad Parsey reported equity compensation awards rather than open-market trades. He received 26,455 restricted stock units, each convertible into one share of common stock upon vesting, granted under the company’s Non-Employee Director Compensation Program.

He was also granted an option for 39,715 shares of common stock at an exercise price of $5.67 per share, expiring in 2036. The option vests in equal monthly installments over 12 months, with any unvested portion vesting in full at the next annual stockholder meeting, subject to continued service. Following these awards, he directly holds 83,746 shares of common stock.

Insider Trade Summary

Grant/Award: 66,170 shares

Grant/Award 2 txns

Insider Parsey Merdad

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (Right to Buy)	39,715	$0.00	$0.00
Grant/Award	Common Stock	26,455	$0.00	$0.00

Holdings After Transaction: Stock Option (Right to Buy) — 39,715 contracts (Direct); Common Stock — 83,746 shares (Direct)

Footnotes (3)

1. F1. Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) share of Common Stock for each one (1) RSU upon the vesting thereof. The RSUs were issued pursuant to the Issuer's Non-Employee Director Compensation Program.
2. F2. The option was issued pursuant to the Issuer's Non-Employee Director Compensation Program.
3. F3. The option vests with respect to 1/12th of the shares subject thereto on each monthly anniversary of the grant date, which vesting will accelerate in full on the date of the next annual stockholder's meeting to the extent unvested as of such date, subject to continued service through each applicable vesting date.

Key Figures

RSU grant: 26,455 RSUs Option grant size: 39,715 options Option exercise price: $5.67 per share +3 more

6 metrics

RSU grant 26,455 RSUs Equity award under Non-Employee Director Compensation Program

Option grant size 39,715 options Stock option (right to buy) granted on 2026-06-16

Option exercise price $5.67 per share Conversion/exercise price for 39,715-share option

Option expiration 2036-06-16 Expiration date of the granted stock option

Shares after transaction 83,746 shares Total Ardelyx common shares directly held after awards

Vesting schedule 1/12 monthly over 12 months Option vesting, with acceleration at next annual stockholder meeting

Key Terms

Restricted stock units ("RSUs"), Non-Employee Director Compensation Program, Stock Option (Right to Buy), vesting, +1 more

5 terms

Restricted stock units ("RSUs") financial

"Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) share of Common Stock for each one (1) RSU"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

Non-Employee Director Compensation Program financial

"The RSUs were issued pursuant to the Issuer's Non-Employee Director Compensation Program."

Stock Option (Right to Buy) financial

"Stock Option (Right to Buy)"

vesting financial

"The option vests with respect to 1/12th of the shares subject thereto on each monthly anniversary of the grant date"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

annual stockholder's meeting financial

"which vesting will accelerate in full on the date of the next annual stockholder's meeting to the extent unvested"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Ardelyx (ARDX) director Merdad Parsey report?

Merdad Parsey reported receiving equity compensation, not open-market trades. He was granted 26,455 restricted stock units and a stock option for 39,715 shares at $5.67 per share, both under Ardelyx’s Non-Employee Director Compensation Program.

How many Ardelyx (ARDX) shares does Merdad Parsey hold after this Form 4?

After these awards, Merdad Parsey directly holds 83,746 shares of Ardelyx common stock. This figure reflects his position following the grant of 26,455 restricted stock units and a 39,715-share option reported in the Form 4 filing.

What are the terms of the stock options granted to Ardelyx (ARDX) director Merdad Parsey?

He received options for 39,715 Ardelyx shares at a $5.67 exercise price, expiring in 2036. The options vest in 12 equal monthly installments, with any remaining unvested portion vesting at the next annual stockholder meeting, subject to continued service.

How do the Ardelyx (ARDX) restricted stock units for Merdad Parsey work?

The 26,455 restricted stock units each convert into one Ardelyx common share upon vesting. These RSUs were issued under the company’s Non-Employee Director Compensation Program as part of equity compensation for board service, rather than open-market purchases.

Is the Ardelyx (ARDX) Form 4 for Merdad Parsey a stock purchase or a compensation grant?

The Form 4 reflects compensation grants, not an open-market purchase. It reports 26,455 restricted stock units and a 39,715-share stock option awarded under Ardelyx’s Non-Employee Director Compensation Program, both classified as grant or award acquisitions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/18/2026 - 05:14 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Parsey Merdad

(Last) (First) (Middle)

C/O ARDELYX, INC.

400 FIFTH AVENUE, SUITE 210

(Street)

WALTHAM MASSACHUSETTS 02451

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/16/2026

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

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

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

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	06/16/2026		A		26,455(1)	A	$0	83,746	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)	$5.67	06/16/2026		A		39,715(2)		(3)	06/16/2036	Common Stock	39,715	$0	39,715	D

Explanation of Responses:

1. Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) share of Common Stock for each one (1) RSU upon the vesting thereof. The RSUs were issued pursuant to the Issuer's Non-Employee Director Compensation Program.

2. The option was issued pursuant to the Issuer's Non-Employee Director Compensation Program.

3. The option vests with respect to 1/12th of the shares subject thereto on each monthly anniversary of the grant date, which vesting will accelerate in full on the date of the next annual stockholder's meeting to the extent unvested as of such date, subject to continued service through each applicable vesting date.

Remarks:

Exhibit 24.1 - Power of Attorney

	/s/ Felecia Ettenberg, Attorney-in-Fact for Merdad Parsey	06/18/2026
	** 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).
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.
* Form 4: SEC 1474 (03-26)