WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC - 31 Mar 2025 SCHEDULE 13G Report for Montrose Environmental Group, Inc. Common Stock (MEG)

Filing Manager: WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Reporting Manager: WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Security: Montrose Environmental Group, Inc. Common Stock
Symbol: MEG
Shares outstanding: 34,607,055 shares
Disclosed Ownership: 1,903,388 shares
Ownership: 5.5%
Form type: SCHEDULE 13G
Filing time: 09 May 2025, 16:13:10 UTC
Date of event: 31 Mar 2025
Next filing: 30 Jul 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	5.5%	1,903,388	1,587,536	0	Stephanie Braming	Partner, Global Head of Investment Management