Eli Casdin - 18 Jun 2025 Form 4/A - Amendment Insider Report for GeneDx Holdings Corp. (WGS)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: WGS
Reported as of: 18 Jun 2025
Net transaction value: $0
SEC form: 4/A - Amendment
Accepted by SEC: 07 Aug 2025, 19:41:01 UTC
Original report date: 23 Jun 2025
Prior SEC filing: 23 Jul 2024
Next SEC filing: 24 Jun 2025
Source filing: View source filing
Reporting owner signature: /s/ Eli Casdin, Eli Casdin

Key filing fact

Eli Casdin filed Form 4/A - Amendment for GeneDx Holdings Corp. (WGS) on 07 Aug 2025.

Key facts

This page summarizes Eli Casdin's Form 4/A - Amendment filing for GeneDx Holdings Corp. (WGS).
3 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 07 Aug 2025, 19:41.

Change

Previous filing in this sequence was filed on 23 Jul 2024.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4/A - Amendment disclosures.

View source filing

Reporting Owners (1)

CIK 0001534264 Primary reporting owner

Casdin Eli

Relationship: Director, 10%+ Owner
Address: 1350 AVENUE OF THE AMERICAS, SUITE 2600, NEW YORK
Signature: /s/ Eli Casdin, Eli Casdin
Signature date: 07 Aug 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

WGS transaction

Class A Common Stock

Options Exercise

Transaction value: $0
Shares: +12,924
Change %: +170%
Price: $0.000000
Shares after: 20,518
Date: 18 Jun 2025
Ownership: Direct
Footnotes: F1, F2

WGS holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,507,164
Date: 18 Jun 2025
Ownership: See Casdin Partners Master Fund, LP
Footnotes: F3

WGS holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 19,247
Date: 18 Jun 2025
Ownership: See Casdin Partners GP, LLC
Footnotes: F4

WGS holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 333,144
Date: 18 Jun 2025
Ownership: See CMLS Holdings LLC
Footnotes: F5

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

WGS transaction Derivative

Restricted Stock Unit

Award

Transaction value: $0
Shares: +3,576
Change %
Price: $0.000000
Shares after: 3,576
Date: 18 Jun 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 3,576
Exercise price
Footnotes: F2, F6

WGS transaction Derivative

Restricted Stock Unit

Options Exercise

Transaction value: $0
Shares: -12,924
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 18 Jun 2025
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 12,924
Exercise price
Footnotes: F2, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Due to clerical errors in prior filings, (i) the number of Class A Common Shares held directly by Eli Casdin was overstated by 1,376 shares in Form 4 filings filed from March 6th, 2024 through June 5th, 2024; and (ii) the Form 4 filed on August 5, 2024 understated Mr. Casdin's direct Class A Common Share holdings by 4,452 shares, as it did not reflect the correct total of 7,594 shares held directly following the vesting of 5,828 RSUs on June 20, 2024. These discrepancies in Class A Common Shares held by Eli Casdin have been corrected in subsequent filings.

Footnote F2

Each restricted stock unit ("RSU") represents a contingent right to receive 1 share of the Issuer's Class A Common Stock upon settlement for no consideration.

Footnote F3

The securities are owned directly by the Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund ("Casdin"), (ii) Casdin Partners GP, LLC, the general partner of the Master Fund (the "GP"), and (iii) Eli Casdin, the managing member of Casdin and the GP.

Footnote F4

The securities are owned directly by the GP and may be deemed to be indirectly beneficially owned by Eli Casdin, the managing member of the GP.

Footnote F5

The securities are owned directly by CMLS Holdings LLC ("CMLS Holdings"). The Board of Managers of CMLS Holdings includes Eli Casdin, who, as a member of the Board of Managers of CMLS Holdings, shares voting and investment discretion with respect to the common stock held by CMLS Holdings.

Footnote F6

The RSUs shall vest the earlier of (a) the date of the next annual meeting of the Issuer's shareholders following the grant date, and (b) the first anniversary of the grant date, subject to the Reporting Person continuing to provide services to the Issuer through each vesting date.

SEC remarks

This Form 4 is being amended to include footnote 1. The Reporting Person disclaims beneficial ownership in the securities reported on this Form 4 except to the extent of its pecuniary interest, if any, therein, and this report shall not be deemed to be an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.