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ACM Research, Inc.

For the period ended Mar 31, 2026. Filed May 8, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 8, 2026

ACMR$49.75+11.5%Stored close · as of Nov 9, 2026

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Item 5. Other Information

On March 5, 2026, Sotheara Cheav, an executive officer, adopted a Rule 10b5-1 trading arrangement (the "Cheav Plan") that is intended to satisfy the affirmative defense of Rule 10b5-1(c) of the Exchange Act. The Cheav Plan allows for the contemporaneous exercise of options and sale of up to 18,750 shares of Class A Common Stock, at specific market prices, commencing on June 4, 2026, and continuing until (i) all such options are exercised and the underlying shares are sold, (ii)June 1, 2027, or (iii) such date that the Cheav Plan is otherwise terminated according to its terms, whichever comes first.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.