Mark McKechnie - Dec 28, 2022 Form 4 Insider Report for ACM Research, Inc. (ACMR)

Role: Chief Financial Officer, Executive Vice President and Treasurer
Signature: /s/ Mark McKechnie
Stock symbol: ACMR
Transactions as of: Dec 28, 2022
Transactions value $: $0
Form type: 4
Date filed: 12/30/2022, 08:30 PM
Previous filing: Aug 16, 2022
Next filing: Aug 21, 2023

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ACMR	Stock Option	Award	$0	+22.5K		$0.00	22.5K	Dec 28, 2022	Class A Common Stock	22.5K	$25.45	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On March 4, 2022, the reporting person was granted an option to purchase 60,000 shares of Class A Common Stock of the Issuer. The option vests and becomes exercisable based on the Issuer's satisfaction of certain performance criteria. On December 28, 2022, the Issuer confirmed that certain of the performance criteria were met, resulting in vesting of the option as to 22,500 shares.

Remarks:

Chief Financial Officer, Executive Vice President and Treasurer