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

Role
Director
Signature
/s/ Mark McKechnie, Attorney-in-Fact for Haiping Dun
Stock symbol
ACMR
Transactions as of
May 22, 2023
Transactions value $
-$9
Form type
4
Date filed
5/24/2023, 06:33 PM
Previous filing
Mar 20, 2023
Next filing
Jun 5, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ACMR Class A Common Stock Options Exercise $18.8K +37.5K +4.22% $0.50* 927K May 22, 2023 Direct F1
transaction ACMR Class A Common Stock Tax liability -$18.8K -1.93K -0.21% $9.73 925K May 22, 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 -37.5K -15.79% $0.00 200K May 22, 2023 Class A Common Stock 37.5K $0.50 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.