ACM Research, Inc. — Director's Dealing 2021

Mar 5, 2021

SEC Form 4/A — Form 4/A

Issuer: ACM Research, Inc. (ACMR)
CIK: 0001680062
Period of Report: 2021-02-22

Reporting Person: Liu Tracy (N/A)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-22	Stock Option	$111.98	A	5000	Acquired	2031-02-21	Class A Common Stock (5000)	Direct

Footnotes

F1: This Form 4 amendment has been filed solely to correct the exercise price of a previously issued stock option to purchase shares of Class A Common Stock of the Issuer reported in a Form 4 filed on March 3, 2021 (the "Form 4"). The exercise price was inadvertently stated as $119.98 in the Form 4. The exercise price should have been stated as $111.98 in the Form 4.

F2: The option will vest and become exercisable immediately prior to the 2022 Annual Meeting of Stockholders of the Issuer, subject to continued service through the vesting date.