STOCK TITAN

Ardelyx officer sells 10,739 shares in tax-cover trade

(Neutral)
(Negative)
Form Type
4

Rhea-AI Filing Summary

ARDELYX, INC. (ARDX) reported that Chief Patient Officer Laura A. Williams sold common stock in multiple transactions on August 21, 2026. A total of 10,739 shares of common stock were sold at a weighted average price of $3.8569 per share, with individual trade prices ranging from $3.648 to $3.984 per share. According to the RSU grant terms, these were automatic sell-to-cover transactions executed upon vesting of restricted stock units, conducted solely to cover applicable withholding taxes.

Positive

  • None.

Negative

  • None.
Insider Williams Laura A
Role Chief Patient Officer
Sold 10,739 shs ($41K)
Type Security Shares Price Value
Sale Common Stock F1 3,486 $3.8569 $13K
Sale Common Stock F1 3,089 $3.8569 $12K
Sale Common Stock F1 2,430 $3.8569 $9K
Sale Common Stock F1 1,734 $3.8569 $7K
Holdings After Transaction: Common Stock — 367,456 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.
Shares sold 10,739 shares of Common Stock Total non-derivative sales on August 21, 2026 by Laura A. Williams
Weighted average sale price $3.8569 per share Average price for the reported sales on August 21, 2026
Sale price range $3.648 to $3.984 per share Price range of multiple trades on August 21, 2026
Number of sale transactions 4 transactions Non-derivative sales of common stock on August 21, 2026
Net buy/sell shares -10,739 shares Net share change from reported transactions (net-sell)
sell-to-cover financial
"Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant"
Sell-to-cover is when part of newly issued or exercised company stock is immediately sold to pay required taxes and fees, so the recipient keeps the remaining shares. For investors this matters because it reduces the number of shares insiders or employees actually hold after a grant, can create small, routine share sales that aren’t signal of cashing out, and slightly increases share supply on the market—like selling a portion of a paycheck to cover the tax bill.
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
"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.
weighted average sale price financial
"The price reported in Column 4 above reflects the weighted average sale price"

FAQ

What insider transaction did ARDX report for Laura A. Williams on this Form 4?

ARDX reported that Chief Patient Officer Laura A. Williams sold 10,739 shares of common stock on August 21, 2026. The sales were tied to RSU vesting and were executed solely to cover withholding taxes under an automatic sell-to-cover provision.

How many ARDX shares did Laura A. Williams sell and at what price?

Laura A. Williams sold a total of 10,739 ARDX common shares in four trades. The weighted average sale price was $3.8569 per share, with individual trade prices ranging from $3.648 to $3.984 per share.

Were the ARDX share sales by Laura A. Williams part of a sell-to-cover for RSUs?

Yes. The filing states the shares were sold pursuant to an automatic sell-to-cover imposed by the terms of the initial RSU awards. The sales occurred upon RSU vesting and were made solely to cover applicable withholding taxes.

How many separate sale transactions did ARDX report for Laura A. Williams?

The Form 4 lists four separate sale transactions of ARDX common stock for Laura A. Williams on August 21, 2026, all reported with the transaction code S for sales in open market or private transactions.

Does the Form 4 indicate these ARDX sales were under a Rule 10b5-1 plan?

No. The document-level Rule 10b5-1 checkbox is not checked, and the footnote describes the transactions as an automatic sell-to-cover under RSU grant terms, rather than as trades under a Rule 10b5-1 trading plan.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Learn about SEC filing dates
SEC Form 4
FORM 4UNITED 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*
Williams Laura A

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Patient 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)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/21/2026S(1)3,486D$3.8569374,709D
Common Stock08/21/2026S(1)3,089D$3.8569371,620D
Common Stock08/21/2026S(1)2,430D$3.8569369,190D
Common Stock08/21/2026S(1)1,734D$3.8569367,456D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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 Laura A. Williams08/25/2026
** Signature of Reporting PersonDate
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)