-
Signature
-
/s/ Mark McKechnie, Attorney-in-Fact for Tracy Liu
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Issuer symbol
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ACMR
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Transactions as of
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17 Sep 2025
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Net transactions value
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-$480,000
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Form type
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4
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Filing time
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19 Sep 2025, 16:30:14 UTC
Reporting Owners (1)
| Name |
Relationship |
Address |
Signature |
Signature date |
CIK |
| Liu Tracy |
Director |
C/O ACM RESEARCH, INC., 42307 OSGOOD ROAD, SUITE I, FREMONT |
/s/ Mark McKechnie, Attorney-in-Fact for Tracy Liu |
19 Sep 2025 |
0001721299 |
Transactions Table
| Type |
Sym |
Class |
Transaction |
Value $ |
Shares |
Change % |
* Price $ |
Shares After |
Date |
Ownership |
Footnotes |
| transaction |
ACMR |
Class A Common Stock |
Options Exercise |
$15,000 |
+15,000 |
+14% |
$1.00 |
125,772 |
17 Sep 2025 |
Direct |
F1 |
| transaction |
ACMR |
Class A Common Stock |
Sale |
$495,000 |
-15,000 |
-12% |
$33.00 |
110,772 |
17 Sep 2025 |
Direct |
F2 |
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 |
-15,000 |
-20% |
$0.000000 |
60,000 |
17 Sep 2025 |
Class A Common Stock |
15,000 |
$1.00 |
Direct |
F1, F3 |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
Explanation of Responses: