Ardelyx (NASDAQ: ARDX) investor files to sell 50,000 shares under Rule 144

Rhea-AI Filing Summary

Ardelyx stockholder plans to sell shares under Rule 144. A notice was filed for the planned sale of 50,000 shares of Ardelyx common stock through Morgan Stanley Smith Barney LLC on or around 01/08/2026, listed with an aggregate market value of $291,500. The shares are to be sold on the NASDAQ, and the filing shows total Ardelyx shares outstanding of 242,974,306.

The 50,000 shares were acquired the same day, 01/08/2026, via a cash exercise of stock options granted by the issuer. The filing also reports that Laura A. Williams sold 6,426 Ardelyx common shares in a prior transaction on 11/21/2025 for gross proceeds of $35,580.12. By signing the notice, the seller represents they are not aware of undisclosed material adverse information about the company.

FAQ

What does the Ardelyx (ARDX) Form 144 filing disclose?

The filing discloses a planned sale of 50,000 shares of Ardelyx common stock under Rule 144, with an aggregate market value of $291,500, to be sold on the NASDAQ through Morgan Stanley Smith Barney LLC.

How were the 50,000 Ardelyx (ARDX) shares being sold acquired?

The 50,000 Ardelyx common shares were acquired on 01/08/2026 via an exercise of stock options from the issuer, paid for in cash on the same date.

Who is the seller named in the recent Ardelyx (ARDX) transactions?

The filing lists Laura A. Williams, with an address in Waltham, MA, as the person for whose account the securities are to be sold, and as the seller of prior shares during the past three months.

What prior Ardelyx (ARDX) share sales are reported in the last three months?

The notice reports that Laura A. Williams sold 6,426 Ardelyx common shares on 11/21/2025, generating gross proceeds of $35,580.12.

How many Ardelyx (ARDX) shares are outstanding according to the Form 144?

The Form 144 indicates that Ardelyx had 242,974,306 shares of common stock outstanding at the time referenced in the notice.

What representation does the Ardelyx (ARDX) seller make in the Form 144?

By signing the notice, the seller represents that they do not know any material adverse information about Ardelyx’s current or prospective operations that has not been publicly disclosed.

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 Not now

Accepted by SEC EDGAR 01/08/2026 - 04:25 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001869194
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ARDELYX INC
SEC File Number	001-36485
Address of Issuer	400 Fifth Avenue Suite 210 Waltham MASSACHUSETTS 02451
Phone	5107451700
Name of Person for Whose Account the Securities are To Be Sold	LAURA A WILLIAMS
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	50000	291500.00	242974306	01/08/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	01/08/2026	Exercise of Stock Options	Issuer			50000	01/08/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
LAURA A WILLIAMS 400 Fifth Avenue Suite 210 Waltham MA 02451	Common	11/21/2025	6426	35580.12

144: Remarks and Signature

Remarks
Date of Notice	01/08/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/27/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Laura A Williams
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)