Casdin Partners GP, LLC 4
4 · GeneDx Holdings Corp. · Filed May 20, 2026
Research Summary
AI-generated summary of this filing
GeneDx (WGS) 10% Owner Casdin Capital Buys 500,000 Shares
What Happened
Casdin Capital, LLC (reported as a 10% owner) made three open-market purchases of GeneDx Holdings Corp. (WGS) common stock on May 18–20, 2026, acquiring a total of 500,000 shares for approximately $21.46 million. The trades: 175,000 shares on 5/18 at a weighted avg $42.55 ($7.45M), 185,000 shares on 5/19 at a weighted avg $42.60 ($7.88M), and 140,000 shares on 5/20 at a weighted avg $43.81 (~$6.13M). These were purchases (code P), not sales.
Key Details
- Transaction dates and reported weighted-average prices:
- 2026-05-18: 175,000 shares @ $42.55 (weighted avg; range $42.4573–$42.9153)
- 2026-05-19: 185,000 shares @ $42.60 (weighted avg; range $42.1118–$42.6898)
- 2026-05-20: 140,000 shares @ $43.81 (weighted avg; range $43.6287–$44.3384)
- Total acquired: 500,000 shares for ~$21,459,735.
- Shares owned after transaction: Not specified in the provided excerpt.
- Filing timeliness: Form 4 filed 2026-05-20 reporting trades from 5/18–5/20; no late filing indicated.
- Notable footnotes:
- Multiple-weighted price ranges disclosed for each purchase (reporting persons will provide breakdown on request).
- Securities are directly owned by Casdin Partners Master Fund, L.P.; Casdin Capital, GP and Eli Casdin may be deemed indirect beneficial owners.
- Reporting persons disclaim beneficial ownership except to the extent of pecuniary interest.
Context
- These were open-market/private purchases by an institutional/affiliate group (a reported 10% owner and related entities), not routine executive trading. Purchases by large holders can be of interest to investors, but the filing does not state motivation.
- The report clarifies indirect ownership structure (Master Fund, GP, and Eli Casdin) and includes a standard disclaimer of beneficial ownership.
Insider Transaction Report
Form 4
Casdin Capital, LLC
Director10% Owner
Transactions
- Purchase
Class A Common Stock, par value $0.0001 per share
[F1][F2]2026-05-18$42.55/sh+175,000$7,446,547→ 3,182,164 total(indirect: See footnote) - Purchase
Class A Common Stock, par value $0.0001 per share
[F3][F2]2026-05-19$42.60/sh+185,000$7,880,334→ 3,367,164 total(indirect: See footnote) - Purchase
Class A Common Stock, par value $0.0001 per share
[F4][F2]2026-05-20$43.81/sh+140,000$6,132,854→ 3,507,164 total(indirect: See footnote)
Holdings
- 20,517
Class A Common Stock, par value $0.0001 per share
[F5] - 19,247(indirect: See foonote)
Class A Common Stock, par value $0.0001 per share
[F6] - 333,144(indirect: See foonote)
Class A Common Stock, par value $0.0001 per share
[F7]
Footnotes (7)
- [F1]The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $42.4573 to $42.9153. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares bought at each separate price within the range set forth in this footnote.
- [F2]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.
- [F3]The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $42.1118 to $42.6898. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares bought at each separate price within the range set forth in this footnote.
- [F4]The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $43.6287 to $44.3384. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares bought at each separate price within the range set forth in this footnote.
- [F5]The securities are owned directly by Eli Casdin.
- [F6]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.
- [F7]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.