Charles Pappis - Aug 12, 2025 Form 4 Insider Report for ACM Research, Inc. (ACMR)

Role
Director
Signature
/s/ Mark McKechnie, Attorney-in-Fact for Charles Pappis
Stock symbol
ACMR
Transactions as of
Aug 12, 2025
Transactions value $
$0
Form type
4
Date filed
8/14/2025, 04:30 PM
Previous filing
May 21, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Pappis Charles C Director C/O ACM RESEARCH, INC., 42307 OSGOOD ROAD, SUITE I, FREMONT /s/ Mark McKechnie, Attorney-in-Fact for Charles Pappis 2025-08-14 0001475345

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ACMR Stock Option Award $0 +20K $0.00 20K Aug 12, 2025 Class A Common Stock 20K $24.93 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The option will vest and become exercisable immediately prior to the 2026 annual meeting of stockholders of the issuer, subject to continued service through the vesting date.