VANGUARD GROUP INC - 31 Dec 2025 SCHEDULE 13G/A Report for ACM Research Inc Common Stock (ACMR)

Filing Manager: VANGUARD GROUP INC
Reporting Manager: The Vanguard Group
Security: ACM Research Inc Common Stock
Symbol: ACMR
Shares outstanding: 59,904,855 shares
Disclosed Ownership: 4,972,103 shares
Ownership: 8.3%
Form type: SCHEDULE 13G/A
Filing time: 30 Jan 2026, 13:26:20 UTC
Date of event: 31 Dec 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
The Vanguard Group	8.3%	4,972,103	0	408,800	Ashley Grim	Head of Global Fund Administration