GeneDx insider plans $1.2M Rule 144 stock sale

GeneDx Holdings Corp. (WGS) received a notice that reporting person Katherine Stueland plans to sell 14,243 shares of Class A common stock under Rule 144 through Morgan Stanley Smith Barney on NASDAQ.

Rhea-AI Filing Summary

GeneDx Holdings Corp. (WGS) received a notice that reporting person Katherine Stueland plans to sell 14,243 shares of Class A common stock under Rule 144 through Morgan Stanley Smith Barney on NASDAQ. The planned sale relates to anticipated vesting of 3,686 RSU shares on September 9, 2026 and 10,557 RSU shares on September 16, 2026. Over the past three months, Stueland sold 14,140 shares of Class A common stock to cover tax withholding obligations from RSU vesting.

Key Figures

Shares to be sold under Rule 144: 14,243 shares of Class A Common Stock Aggregate market value of planned sale: $1,208,100 RSU-related shares from 12/09/2022 grant: 3,686 shares +4 more

7 metrics

Shares to be sold under Rule 144 14,243 shares of Class A Common Stock Planned sale by Katherine Stueland through Morgan Stanley Smith Barney

Aggregate market value of planned sale $1,208,100 Aggregate market value for 14,243 shares to be sold under Rule 144

RSU-related shares from 12/09/2022 grant 3,686 shares Shares to be sold in connection with anticipated vesting of RSUs on September 9, 2026

RSU-related shares from 04/26/2023 grant 10,557 shares Shares to be sold in connection with anticipated vesting of RSUs on September 16, 2026

Shares sold on June 9, 2026 3,639 shares Class A Common Stock sold to cover tax withholding obligations from RSU vesting

Shares sold on June 16, 2026 10,501 shares Class A Common Stock sold to cover tax withholding obligations from RSU vesting

Total shares sold in past 3 months 14,140 shares Shares sold by Katherine Stueland to cover RSU-related tax withholding

Key Terms

Rule 144, Restricted Stock Units, tax withholding obligations

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"Acquired as compensation - Restricted Stock Units"

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.

tax withholding obligations financial

"shares sold to cover tax withholding obligations in connection with vesting"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing for WGS disclose about planned insider sales?

The filing states that Katherine Stueland plans to sell 14,243 shares of GeneDx Holdings Corp. Class A common stock under Rule 144. The shares are tied to anticipated vesting of RSUs scheduled for September 9, 2026 and September 16, 2026.

How many WGS shares has Katherine Stueland sold in the last three months?

The notice reports that Stueland sold 14,140 shares of GeneDx Class A common stock during the past three months, consisting of 3,639 shares on June 9, 2026 and 10,501 shares on June 16, 2026, to cover tax withholding obligations from RSU vesting.

What RSU vesting events are linked to the planned WGS share sales?

The planned sale of 14,243 shares is linked to anticipated vesting of Restricted Stock Units: 3,686 shares acquired as compensation on December 9, 2022 and 10,557 shares acquired as compensation on April 26, 2023. These vestings are expected on September 9, 2026 and September 16, 2026.

What is the approximate aggregate market value of the WGS shares to be sold?

The Form 144 lists an aggregate market value of $1,208,100 for the planned sale of 14,243 shares of GeneDx Holdings Corp. Class A common stock under Rule 144.

Which broker is handling the planned Rule 144 sale of WGS shares?

The planned Rule 144 sale of 14,243 shares of GeneDx Holdings Corp. Class A common stock for Katherine Stueland is to be executed through Morgan Stanley Smith Barney, located at 2000 Westchester Avenue, Purchase, New York.

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

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Available on EDGAR 09/01/2026 - 06:06 PM EDT Accepted by SEC EDGAR 09/01/2026 - 06:05 PM EDT 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	0001689575
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	GeneDx Holdings Corp.
SEC File Number	001-39482
Address of Issuer	333 Ludlow St, North Tower 6th Floor Stamford CONNECTICUT 06902
Phone	888-729-1206
Name of Person for Whose Account the Securities are To Be Sold	Katherine Stueland
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
Relationship to Issuer	Director

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
Class A Common Stock	Morgan Stanley Smith Barney 2000 Westchester Avenue Purchase NY 10577	14243	1208100	29822541	09/09/2026	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 *
Class A Common Stock	12/09/2022	Acquired as compensation - Restricted Stock Units	Issuer			3686	12/09/2022	Compensation
Class A Common Stock	04/26/2023	Acquired as compensation - Restricted Stock Units	Issuer			10557	04/26/2023	Compensation

* 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
Katherine Stueland 333 Ludlow St, North Tower 6th Floor Stamford CT 06902	Class A Common Stock	06/09/2026	3639	195669
Katherine Stueland 333 Ludlow St, North Tower 6th Floor Stamford CT 06902	Class A Common Stock	06/16/2026	10501	638104

144: Remarks and Signature

Remarks	Represents approximately 14,243 shares to be sold on behalf of the Reporting Person, including 1) approximately 3,686 shares to be sold in connection with anticipated vesting of RSUs on September 9, 2026; and 2) approximately 10,557 shares to be sold in connection with anticipated vesting of RSUs on September 16, 2026. Shares sold in the past 3 months by the Reporting Person include 14,140 shares sold to cover tax withholding obligations in connection with vesting and settlement of RSUs.
Date of Notice	09/01/2026
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	/s/ Katherine Stueland
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)