Haiping Dun - Mar 9, 2022 Form 4 Insider Report for ACM Research, Inc. (ACMR)

Role: Director
Signature: /s/ Mark L. Johnson, Attorney-in-Fact for Haiping Dun
Stock symbol: ACMR
Transactions as of: Mar 9, 2022
Transactions value $: -$988,698
Form type: 4
Date filed: 3/11/2022, 04:08 PM
Previous filing: Mar 4, 2022
Next filing: May 20, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACMR	Class A Common Stock	Options Exercise	$18.4K	+12.3K	+4.13%	$1.50^*	310K	Mar 9, 2022	Direct	F1
transaction	ACMR	Class A Common Stock	Sale	-$96.6K	-1.2K	-0.39%	$80.48^*	308K	Mar 9, 2022	Direct	F2, F3
transaction	ACMR	Class A Common Stock	Sale	-$663K	-8.07K	-2.62%	$82.11^*	300K	Mar 9, 2022	Direct	F2, F4
transaction	ACMR	Class A Common Stock	Sale	-$248K	-3K	-1%	$82.66^*	297K	Mar 9, 2022	Direct	F2, F5

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	-12.3K	-98.15%	$0.00	231	Mar 9, 2022	Class A Common Stock	231	$1.50	Direct	F1, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On March 9, 2022, the reporting person exercised a previously issued stock option to purchase 12,269 shares of Class A Common Stock of the Issuer.
F2	The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
F3	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.99 to $80.82, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3), (4), (5) and (6) to this Form 4.
F4	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.49 to $82.49, inclusive.
F5	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.54 to $82.83, inclusive.
F6	The option vested and became exercisable as to 41,666 shares on May 1, 2016 and the remaining 125,001 shares vested and became exercisable in equal monthly installments over the following 36 months.