Ardelyx CFO sells 1,558 shares in tax trade

Rhea-AI Filing Summary

ARDELYX, INC. (ARDX) reported that Chief Financial Officer Susan Hohenleitner sold 1,558 shares of common stock on 2026-08-21 at a weighted-average price of $3.8569 per share. According to the filing, this was an automatic sell-to-cover triggered by vesting of RSUs to pay withholding taxes, executed in multiple trades between $3.648 and $3.984. After these tax-related sales, she directly holds 227,520 shares of ARDX common stock.

Insider Trade Summary

Net Seller: 1,558 shares

Net Sell 1 txn

Insider Hohenleitner Susan

Role Chief Financial Officer

Sold 1,558 shs ($6K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	1,558	$3.8569	$6K

Holdings After Transaction: Common Stock — 227,520 shares (Direct)

Footnotes (1)

1. F1. Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes. The transaction was executed in multiple trades in prices ranging from $3.648 to $3.984, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

Key Figures

Shares sold: 1,558 shares Weighted-average sale price: $3.8569 per share Trade price range: $3.648–$3.984 per share +1 more

4 metrics

Shares sold 1,558 shares Common stock sold on 2026-08-21 in automatic sell-to-cover

Weighted-average sale price $3.8569 per share Average price for 1,558 shares sold on 2026-08-21

Trade price range $3.648–$3.984 per share Range of prices for multiple trades in the sell-to-cover

Shares held after transaction 227,520 shares Direct ARDX common stock holdings of CFO after sale

Key Terms

automatic sell-to-cover, restricted stock units ("RSUs"), withholding taxes

3 terms

automatic sell-to-cover financial

"Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant"

restricted stock units ("RSUs") financial

"terms of the initial grant of the restricted stock units ("RSUs") awards"

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.

withholding taxes financial

"the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes"

Withholding taxes are amounts a payer or government takes out of payments — such as wages, interest, or dividends — before the recipient gets the money, functioning like a cashier keeping part of a bill to pay taxes on your behalf. For investors this matters because it reduces the cash they actually receive, affects net returns and yield calculations, and may require additional paperwork or treaty claims to recover or offset the withheld amount against final tax bills.

FAQ

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

What insider transaction did ARDX report for CFO Susan Hohenleitner?

ARDX reported that CFO Susan Hohenleitner sold 1,558 shares of common stock on 2026-08-21 at a weighted-average price of $3.8569 per share in an automatic sell-to-cover related to vesting RSUs and associated tax withholding.

Was the recent ARDX CFO stock sale part of a tax sell-to-cover?

Yes. The filing states the shares were sold pursuant to an automatic sell-to-cover imposed by the RSU grant terms, and were sold solely to cover applicable withholding taxes upon vesting of restricted stock units.

How many ARDX shares does the CFO hold after the reported sale?

After the sale, CFO Susan Hohenleitner directly holds 227,520 ARDX common shares, as reported in the Form 4 following the automatic sell-to-cover transaction of 1,558 shares on 2026-08-21.

What price range were the ARDX shares sold at in the CFO’s transaction?

The transaction was executed in multiple trades at prices ranging from $3.648 to $3.984 per share, with a reported weighted-average sale price of $3.8569 per share for the 1,558 shares sold.

Was the ARDX CFO’s Form 4 transaction reported under a Rule 10b5-1 plan?

The Form 4 indicates the Rule 10b5-1 checkbox is not checked, while the footnote explains the sale arose from an automatic sell-to-cover feature tied to RSU vesting rather than a discretionary trading plan.

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

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Available on EDGAR 08/25/2026 - 07:20 PM Accepted by SEC EDGAR 08/25/2026 - 07:19 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^*

Hohenleitner Susan

(Last) (First) (Middle)

C/O ARDELYX, INC.

400 FIFTH AVE, 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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/21/2026

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	08/21/2026		S(1)		1,558	D	$3.8569	227,520	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

Explanation of Responses:

1. Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes. The transaction was executed in multiple trades in prices ranging from $3.648 to $3.984, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.

Remarks:

	/s/ Felecia Ettenberg, Attorney-in-Fact for Susan Hohenleitner	08/25/2026
	** 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)