Haiping Dun - 22 May 2023 Form 4 Insider Report for ACM Research, Inc. (ACMR)

Role
Director
Signature
/s/ Mark McKechnie, Attorney-in-Fact for Haiping Dun
Issuer symbol
ACMR
Transactions as of
22 May 2023
Net transactions value
-$9.44
Form type
4
Filing time
24 May 2023, 18:33:09 UTC
Previous filing
20 Mar 2023
Next filing
05 Jun 2023
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ACMR Class A Common Stock Options Exercise $18,750 +37,500 +4.2% $0.5000* 926,616 22 May 2023 Direct F1
transaction ACMR Class A Common Stock Tax liability $18,759 -1,928 -0.21% $9.73 924,688 22 May 2023 Direct F1

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 Options Exercise $0 -37,500 -16% $0.000000 200,001 22 May 2023 Class A Common Stock 37,500 $0.5000 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On May 22, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 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 1,928 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 May 19, 2023 of $9.73, and issuing to the reporting person the remaining 35,572 shares of Class A Common Stock.
F2 The option is fully vested and exercisable.