[144] ARDELYX, INC. SEC Filing

Rhea-AI Filing Summary

ARDX affiliate filed a notice to sell common stock. The filing identifies the vesting of 10,388 restricted stock units on 02/19/2026 as the source of securities to be sold. The filing also records a prior sale of 11,086 shares on 11/21/2025 for $61,382.07.

Insights

Equity Capital Markets Analyst

Form 144 reports an affiliate sale tied to RSU vesting, not an operational development.

The filing lists the vesting of 10,388 restricted stock units on 02/19/2026, indicating the affiliate plans to sell shares derived from equity compensation. This is a disclosure of a proposed resale under Section 144 rather than a company action.

Cash‑flow treatment and timing of any market transactions are not detailed here; prior activity includes a sale of 11,086 shares on 11/21/2025 for $61,382.07. Subsequent filings will show actual sales and execution details.

FAQ

What does the ARDX Form 144 disclose?

It discloses a proposed resale tied to vesting of 10,388 RSUs on 02/19/2026. The notice records the source as restricted stock unit vesting and lists a prior sale of 11,086 shares on 11/21/2025 for $61,382.07.

Who is the selling party in the ARDX filing?

The filing references an affiliate intermediary and a named seller, Joseph James Reilly. Morgan Stanley Smith Barney LLC Executive Financial Services appears as a broker; the seller executed a prior sale on 11/21/2025.

How many ARDX shares are involved from RSU vesting?

The notice ties 10,388 vested restricted stock units to the proposed sale on 02/19/2026. These units are the identified source of shares the affiliate listed to resell under the Form 144 notice.

Does the Form 144 state when the shares will be sold?

The filing ties shares to a vesting date of 02/19/2026 but does not provide execution timing. Form 144 is a notice of proposed sale; actual sale dates and methods may appear in later transaction reports.

Was there any recent sale by the same holder?

Yes, a sale of 11,086 shares occurred on 11/21/2025 for $61,382.07. That prior transaction is recorded in the filing as securities sold during the past three months.

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Accepted by SEC EDGAR 02/20/2026 - 06:35 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	0002044416
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	510-745-1700
Name of Person for Whose Account the Securities are To Be Sold	Reilly Joseph James
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 Stock	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza, 8th Floor New York NY 10004	4900	28077.00	245247427	02/20/2026	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 Stock	02/19/2026	Vesting of restricted stock units	Issuer			10388	02/19/2026	Services Rendered

* 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
Joseph James Reilly 400 Fifth Avenue, Suite 210 Waltham MA 02451	Common Stock	11/21/2025	11086	61382.07

144: Remarks and Signature

Remarks	Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units (RSUs) awards, the shares are to be sold upon the vesting of the RSUs solely to cover applicable withholding taxes.
Date of Notice	02/20/2026
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	Elizabeth Grammer, as Attorney-in-Fact for Joseph James Reilly
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)