ACM Research, Inc. — Director's Dealing 2019

May 10, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ACM Research, Inc. (ACMR)
CIK: 0001680062
Period of Report: 2019-05-09

Reporting Person: Cheav Sotheara (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-05-09	Class A Common Stock	M	10000	$0.75	Acquired	43334	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2019-05-09	Stock Option	$0.75	M	10000	Disposed	2021-05-01	Class A Common Stock (10000)	Direct

Footnotes

F1: On May 9, 2019, the reporting person exercised previously issued stock options to purchase 10,000 shares of Class A Common Stock of the Issuer.

F2: The option is fully vested and exercisable.