Laura A. Williams proposes sale of 31,000 shares (ARDX)

Rhea-AI Filing Summary

Laura A. Williams submitted a notice of proposed sale under Form 144 for Common Stock. The filing lists 31,000 shares tied to an exercise of stock options dated 06/18/2026 and 50,898 shares associated with Restricted Stock Units dated 11/19/2022. The filing also discloses prior sales of 6,989 shares on 05/21/2026 for $43,803.56. The broker of record is Morgan Stanley Smith Barney LLC.

Insights

Securities Counsel

Filing lists proposed dispositions tied to option exercise and vested RSUs; timing and resale methods matter.

The notice identifies 31,000 shares from an exercise of stock options dated 06/18/2026 and 50,898 shares from Restricted Stock Units dated 11/19/2022. The broker of record is Morgan Stanley Smith Barney LLC.

Whether these shares are sold under Rule 144 volume limitations or other resale methods is not stated here; related sales of 6,989 shares on 05/21/2026 for $43,803.56 are disclosed as past activity.

Key Figures

Option-exercise shares proposed: 31,000 shares RSU shares proposed: 50,898 shares Shares sold in past 3 months: 6,989 shares +1 more

4 metrics

Option-exercise shares proposed 31,000 shares Exercise of Stock Options dated <date>06/18/2026

RSU shares proposed 50,898 shares Restricted Stock Units dated <date>11/19/2022

Shares sold in past 3 months 6,989 shares Sale on <date>05/21/2026</date>

Proceeds from prior sale $43,803.56 Sale of 6,989 shares on <date>05/21/2026</date>

Key Terms

Form 144, Restricted Stock Units, Exercise of Stock Options

3 terms

Form 144 regulatory

"notice of proposed sale under Form 144"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Units financial

"Restricted Stock Units dated 11/19/2022"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Exercise of Stock Options financial

"Exercise of Stock Options dated 06/18/2026"

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	81898	478284.32	247029387	06/18/2026	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	06/18/2026	Exercise of Stock Options	Issuer			31000	06/18/2026	Cash
Common	11/19/2022	Restricted Stock Units	Issuer			50898	11/19/2022	N/A

* 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	05/21/2026	6989	43803.56

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What shares does Laura A. Williams propose to sell in the Form 144 for ARDX?

The filing lists 31,000 shares from an exercise of stock options (dated 06/18/2026) and 50,898 shares from Restricted Stock Units (dated 11/19/2022), both described as Common Stock.

Were any recent sales reported prior to the Form 144 filing for ARDX?

Yes. The notice discloses a prior sale of 6,989 shares on 05/21/2026 for $43,803.56, recorded under "Securities Sold During The Past 3 Months."

Who is the broker of record listed on the Form 144 for ARDX?

The broker of record is listed as Morgan Stanley Smith Barney LLC with an address at 1 New York Plaza, 8th Floor, New York, NY 10004, per the filing's broker information.

Does the Form 144 state how the shares will be sold or timing for ARDX?

The filing identifies the security types and dates (06/18/2026 and 11/19/2022) but does not specify resale methods, volume limitations, or exact timing for the proposed sales.