Haiping Dun - 03 Mar 2025 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
03 Mar 2025
Net transactions value
-$2.58
Form type
4
Filing time
05 Mar 2025, 16:30:48 UTC
Previous filing
03 Dec 2024
Next filing
12 Mar 2025
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 $12,500 +25,001 +3.3% $0.5000 780,091 03 Mar 2025 Direct F1
transaction ACMR Class A Common Stock Tax liability $12,503 -482 -0.06% $25.94 779,609 03 Mar 2025 Direct F1
holding ACMR Class A Common Stock 100,000 03 Mar 2025 Dun Family GST Trust

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 -25,001 -100% $0.000000 0 03 Mar 2025 Class A Common Stock 25,001 $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 March 3 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 25,001 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 482 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 February 28, 2025 of $25.94, and issuing to the reporting person the remaining 24,519 shares of Class A Common Stock.
F2 The option is fully vested and exercisable.