Haiping Dun - Mar 9, 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
Mar 9, 2023
Transactions value $
-$5
Form type
4
Date filed
3/13/2023, 09:02 PM
Previous filing
Dec 2, 2022
Next filing
Mar 20, 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 +4.21% $0.50* 928K Mar 9, 2023 Direct F1
transaction ACMR Class A Common Stock Tax liability -$18.8K -1.5K -0.16% $12.47 927K Mar 9, 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 -13.64% $0.00 238K Mar 9, 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 March 9, 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 1,504 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 March 8, 2023 of $12.47, and issuing to the reporting person the remaining 35,996 shares of Class A Common Stock.
F2 The option is fully vested and exercisable.