ACM Research, Inc. — Director's Dealing 2023

Mar 13, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ACM Research, Inc. (ACMR)
CIK: 0001680062
Period of Report: 2023-03-09

Reporting Person: Dun Haiping (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-03-09	Class A Common Stock	M	37500	$0.5	Acquired	928120	Direct
2023-03-09	Class A Common Stock	F	1504	$12.47	Disposed	926616	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-03-09	Stock Option	$0.5	M	37500	Disposed	2025-04-30	Class A Common Stock (37500)	Direct

Footnotes

F1: On March 9, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,504 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 8, 2023 of $12.47, and issuing to the reporting person the remaining 35,996 shares of Class A Common Stock.

F2: The option is fully vested and exercisable.