CMLS Holdings LLC - 22 Aug 2025 SCHEDULE 13D/A Report for GeneDx Holdings Corp. Class A common stock, par value $0.0001 per share (WGS)

Filing Manager
CMLS Holdings LLC
Reporting Manager
Keith A. Meister
Security
GeneDx Holdings Corp. Class A common stock, par value $0.0001 per share
Symbol
WGS
Shares outstanding
29,046,608 shares
Disclosed Ownership
3,630,826 shares
Ownership
12%
Form type
SCHEDULE 13D/A
Filing time
26 Aug 2025, 11:27:12 UTC
Date of event
22 Aug 2025
Previous filing
07 May 2025
SEC
View on sec.gov

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Quoteable Key Fact

"CMLS Holdings LLC disclosed 12% ownership in GeneDx Holdings Corp. Class A common stock, par value $0.0001 per share (WGS) on 22 Aug 2025."

Quick Takeaways

  • CMLS Holdings LLC filed SCHEDULE 13D/A for GeneDx Holdings Corp. Class A common stock, par value $0.0001 per share (WGS).
  • Disclosed ownership: 12%.
  • Date of event: 22 Aug 2025.

What Changed

  • Previous schedule filing date: 07 May 2025.
  • Current filing was accepted on 26 Aug 2025, 11:27.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (9)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
CMLS Holdings LLC 1.9% 537,285 0 537,285 By: /s/ Eli Casdin Eli Casdin, Manager 0001822257
C-LSH LLC 1.9% 537,285 0 537,285 By: /s/ Eli Casdin Eli Casdin, Managing Member 0001822233
M-LSH LLC 1.9% 537,285 0 537,285 By: /s/ Keith A. Meister Keith A. Meister, Managing Member 0001822736
Casdin Capital, LLC 10% 3,007,164 0 3,007,164 By: /s/ Eli Casdin Eli Casdin, Managing Member 0001534261
Casdin Partners Master Fund, L.P. 10% 3,007,164 0 3,007,164 By: /s/ Eli Casdin Eli Casdin, Managing Member of its General Partner 0001534265
Casdin Partners GP, LLC 10% 3,026,411 0 3,026,411 By: /s/ Eli Casdin Eli Casdin, Managing Member 0001534260
Eli Casdin 12% 3,599,671 35,975 3,563,696 By: /s/ Eli Casdin Eli Casdin 0001534264
Keith A. Meister 12% 3,630,826 34,912 3,595,914 By: /s/ Keith A. Meister Keith A. Meister 0001307631
Corvex Management LP 11% 3,058,629 0 3,058,629 By: /s/ Keith A. Meister Keith Meister, Managing Partner 0001535472

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