Mark McKechnie - Aug 10, 2023 Form 4/A - Amendment Insider Report for ACM Research, Inc. (ACMR)

Role
Chief Financial Officer and Treasurer
Signature
/s/ Mark McKechnie
Stock symbol
ACMR
Transactions as of
Aug 10, 2023
Transactions value $
$0
Form type
4/A - Amendment
Date filed
8/21/2023, 09:19 PM
Date Of Original Report
Aug 14, 2023
Previous filing
Dec 30, 2022
Next filing
Sep 5, 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 -300K -50% $0.00 300K Aug 10, 2023 Class A Common Stock 300K $13.89 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This Form 4 amendment has been filed solely to correct the exercise price of the stock option to purchase shares of Class A Common Stock of the Issuer reported in a Form 4 filed on August 14, 2023 (the "Form 4"). The exercise price was inadvertently stated as $13.24 in the Form 4. The exercise price should have been stated as $13.89 in the Form 4.
F2 The option will vest and become exercisable as to 75,000 shares on August 10, 2024 and the remaining 225,000 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date.

Remarks:

Chief Financial Officer and Treasurer