William Blair Investment Management, Llc - Sep 30, 2025 SCHEDULE 13G/A Report for GeneDx Holdings Corp. Common Stock (WGS)

Filing Manager: WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Reporting Manager: WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Security: GeneDx Holdings Corp. Common Stock
Symbol: WGS
Shares outstanding: 28.7M shares
Disclosed Ownership: 1.24M shares
Ownership: 4.3%
Form type: SCHEDULE 13G/A
Date filed: 11/12/2025, 06:14 PM
Date of event: Sep 30, 2025
Previous filing: Jul 30, 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	4.3%	1.24M	1.12M	0	Walter R. Randall, Jr.	Chief Compliance Officer