ACM Research, Inc. — Director's Dealing 2025

Jul 17, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ACM Research, Inc. (ACMR)
CIK: 0001680062
Period of Report: 2025-07-15

Reporting Person: Liu Tracy (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-07-15	Class A Common Stock	M	15000	$1	Acquired	125772	Direct
2025-07-15	Class A Common Stock	S	15000	$30	Disposed	110772	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-07-15	Stock Option	$1	M	15000	Disposed	2026-12-27	Class A Common Stock (15000)	Direct

Footnotes

F1: On July 15, 2025, the reporting person exercised a previously issued stock option to purchase 15,000 shares of Class A Common Stock of the Issuer.

F2: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2025.

F3: The option is fully vested and exercisable.