ARDX (NASDAQ: ARDX) amended Form 144 shows planned sale tied to RSU vesting

Rhea-AI Filing Summary

ARDX filed an amended Form 144/A disclosing a proposed sale of common stock, listing 10,388 shares tied to restricted stock unit vesting on 02/19/2026. The filing also reports a prior sale by Joseph James Reilly of 11,086 shares on 11/21/2025.

Insights

Securities Compliance Analyst

Amended Form 144 shows an affiliate notice to sell shares following RSU vesting.

The filing lists 10,388 shares tied to restricted stock unit vesting on 02/19/2026, indicating a planned sale method under a Section 144 notice. The excerpt also records a prior disposition of 11,086 shares on 11/21/2025.

Timing, pricing, and exact cash‑flow treatment are not disclosed in the provided excerpt; subsequent filings or broker reports may provide sale execution details.

FAQ

What does ARDX's amended Form 144/A disclose?

It discloses a proposed sale of common stock totaling 10,388 shares tied to RSU vesting on 02/19/2026. It also records a prior sale of 11,086 shares by Joseph James Reilly on 11/21/2025, per the excerpt.

Who is named in the ARDX Form 144/A filing?

Joseph James Reilly is named with a prior sale of 11,086 shares on 11/21/2025. The filing shows the RSU vesting event and the 10,388 shares associated with the proposed resale on 02/19/2026.

Are the 10,388 shares already sold or being registered for sale?

The filing lists 10,388 shares tied to RSU vesting dated 02/19/2026, indicating a proposed sale notice. The excerpt does not state execution details or settlement outcomes for those shares.

Does the filing state how the shares will be sold?

The excerpt lists the sale under a Form 144/A amendment but does not describe specific sale methods or pricing. Brokerage or subsequent transaction reports would show execution method and proceeds if disclosed later.

What dates are relevant in the ARDX excerpt?

Key dates are 02/19/2026 for RSU vesting and 11/21/2025 for a prior sale by Joseph James Reilly. Those dates appear next to the listed share counts in the filing excerpt.

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

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Accepted by SEC EDGAR 02/23/2026 - 06:17 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/A

144/A: Filer Information

Filer CIK	0002044416
Filer CCC	XXXXXXXX
Previous Accession Number Of The Filing	0002044416-26-000001
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144/A: 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/A: 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	4991	33539.52	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/A: 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/A: 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/A: 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. This amendment to Form 144 filed on February 20, 2026, amends by increasing the number of shares to be sold by 91 shares and amends the aggregate market value in accordance with instruction 3(d). The original filing underestimated the share count due to a lower than expected execution price in an automated tax withholding sell-to-cover transaction.
Date of Notice	02/23/2026
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)