Haiping Dun - Mar 3, 2025 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 3, 2025
Transactions value $
-$3
Form type
4
Date filed
3/5/2025, 04:30 PM
Previous filing
Dec 3, 2024
Next filing
Mar 12, 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 $12.5K +25K +3.31% $0.50 780K Mar 3, 2025 Direct F1
transaction ACMR Class A Common Stock Tax liability -$12.5K -482 -0.06% $25.94 780K Mar 3, 2025 Direct F1
holding ACMR Class A Common Stock 100K Mar 3, 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 -25K -100% $0.00 0 Mar 3, 2025 Class A Common Stock 25K $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 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.