ACM Research, Inc. — Director's Dealing 2024

May 24, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ACM Research, Inc. (ACMR)
CIK: 0001680062
Period of Report: 2024-05-22

Reporting Person: Wang David H (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-05-22	Class A Common Stock	S	45000	$22.81	Disposed	635108	Direct
2024-05-22	Class A Common Stock	S	45000	$22.81	Disposed	590108	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	100002	Indirect
Class A Common Stock	45837	Indirect
Class A Common Stock	180000	Indirect
Class A Common Stock	620001	Indirect

Footnotes

F1: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 13, 2023.

F2: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $22.47 to $23.31, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4.

F3: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $22.48 to $23.31, inclusive.