ACM Research, Inc. — Director's Dealing 2023

Jun 8, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ACM Research, Inc. (ACMR)
CIK: 0001680062
Period of Report: 2023-06-06

Reporting Person: Cheav Sotheara (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-06-06	Class A Common Stock	M	22500	$4.62	Acquired	132502	Direct
2023-06-06	Class A Common Stock	M	16500	$5.33	Acquired	149002	Direct
2023-06-06	Class A Common Stock	S	39000	$10	Disposed	110002	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2022-06-06	Stock Option	$4.62	M	22500	Disposed	2028-07-31	Class A Common Stock (22500)	Direct
2023-06-06	Stock Option	$5.33	M	16500	Disposed	2029-08-03	Class A Common Stock (16500)	Direct

Footnotes

F1: On June 6, 2023, the reporting person exercised a previously issued stock option to purchase 22,500 shares of Class A Common Stock of the Issuer.

F2: On June 6, 2023, the reporting person exercised a previously issued stock option to purchase 16,500 shares of Class A Common Stock of the Issuer.

F3: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F4: The option is fully vested and exercisable.