Insider Trading & Ownership of Sotheara Cheav

Location: Fremont, CA
Summary: The estimated net worth of Sotheara Cheav is at least $3,500,070 dollars as of 19 Sep 2025. Sotheara Cheav is the Senior Vice President, Manufacturing of ACM Research (Shanghai), Inc., a subsidiary of the Issuer. of ACM Research, Inc. and owns shares of ACM Research, Inc. (ACMR) stock worth about $3.5M.
Signature: /s/ Mark McKechnie, Attorney-in-Fact for Sotheara Cheav
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Ownership of Sotheara Cheav

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
ACMR	ACM Research, Inc.	Senior Vice President, Manufacturing of ACM Research (Shanghai), Inc., a subsidiary of the Issuer.	$3,500,070	-$1,204,314	-26%	18 Sep 2025

Sym	Company	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.