ACM Research, Inc. — Director's Dealing 2020

Nov 27, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ACM Research, Inc. (ACMR)
CIK: 0001680062
Period of Report: 2020-11-25

Reporting Person: Wang David H (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-11-25	Class A Common Stock	M	33334	$0.75	Acquired	201340	Direct
2020-11-25	Class A Common Stock	F	339	$73.76	Disposed	201001	Direct
2020-11-25	Class A Common Stock	M	66666	$0.75	Acquired	267667	Direct
2020-11-25	Class A Common Stock	F	678	$73.76	Disposed	266989	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-11-25	Stock Option	$0.75	M	33334	Disposed	2021-05-01	Class A Common Stock (33334)	Direct
2020-11-25	Stock Option	$0.75	M	66666	Disposed	2021-05-01	Class A Common Stock (66666)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Class A Common Stock	33334	Indirect
Class A Common Stock	15279	Indirect
Class A Common Stock	60000	Indirect
Class A Common Stock	206667	Indirect

Footnotes

F1: On November 25, 2020, the reporting person exercised, by net exercise, a previously issued stock option to purchase 33,334 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 339 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 November 24, 2020 of $73.76, and issuing to the reporting person the remaining 32,995 shares of Class A Common Stock.

F2: On November 25, 2020, the reporting person exercised, by net exercise, a previously issued stock option to purchase 66,666 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 678 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 November 24, 2020 of $73.76, and issuing to the reporting person the remaining 65,988 shares of Class A Common Stock.

F3: The option is fully vested and exercisable.