Wang David H 4

4 · ACM Research, Inc. · Filed Sep 5, 2025

Form 4

Period: 2025-09-03

DirectorSee Remarks10% Owner

Transactions

Exercise/Conversion
Class A Common Stock
2025-09-03$1.00/sh+70,000$70,000→ 742,708 total
Sale
Class A Common Stock
2025-09-03$26.73/sh−66,057$1,765,704→ 676,651 total
Exercise/Conversion
Stock Option
2025-09-04−60,000→ 740,002 total
Exercise: $1.00Exp: 2026-12-27→ Class A Common Stock (60,000 underlying)
Sale
Class A Common Stock
2025-09-03$27.31/sh−3,943$107,683→ 672,708 total
Exercise/Conversion
Class A Common Stock
2025-09-04$1.00/sh+60,000$60,000→ 732,708 total
Sale
Class A Common Stock
2025-09-04$26.44/sh−60,000$1,586,400→ 672,708 total
Exercise/Conversion
Stock Option
2025-09-03−70,000→ 800,002 total
Exercise: $1.00Exp: 2026-12-27→ Class A Common Stock (70,000 underlying)

Holdings

Class A Common Stock
(indirect: By Spouse)
100,002
Class A Common Stock
(indirect: By Trust)
180,000
Class A Common Stock
(indirect: By Trust)
620,001
Class A Common Stock
(indirect: By Sophia Wang, daughter of David H. Wang)
45,837

Footnotes (5)

[F1]The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 29, 2024.
[F2]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $26.25 to $27.19, 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 footnote (2), (3), and (4) to this Form 4.
[F3]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $27.29 to $27.33, inclusive.
[F4]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $26.14 to $26.68, inclusive.
[F5]The option is fully vested and exercisable.

Documents

1 file