ACM Research insider to sell 70,000 shares

Hui Wang filed a Rule 144 notice to sell up to 70,000 ACMR common shares following a stock option exercise.

Rhea-AI Filing Summary

ACM Research, Inc. (ACMR) is the issuer for a planned sale of restricted or control securities disclosed in a Rule 144 notice filed for the account of Hui Wang. The notice covers up to 70,000 shares of Common Stock to be sold through Morgan Stanley Smith Barney LLC on NASDAQ.

The shares are associated with a stock option exercise from the issuer and are to be sold for cash, with a stated aggregate value of approximately $5,408,522.00. The intended transaction date listed in the notice is September 8, 2026.

Key Figures

Shares to be sold: 70,000 shares Aggregate value of shares: $5,408,522.00 Planned sale date: September 8, 2026 +2 more

5 metrics

Shares to be sold 70,000 shares Common Stock covered by the Rule 144 notice for Hui Wang

Aggregate value of shares $5,408,522.00 Approximate value of the 70,000 ACMR common shares in the planned Rule 144 sale

Planned sale date September 8, 2026 Intended transaction date for the Rule 144 sale of ACMR shares

Security class Common Stock Class of ACM Research, Inc. securities to be sold under Rule 144

Broker Morgan Stanley Smith Barney LLC Broker handling the planned sale of ACMR shares under Rule 144

Key Terms

Rule 144, Stock Option Exercise, Common Stock

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Stock Option Exercise financial

"Common | 09/08/2026 | Stock Option Exercise | ISSUER"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Common Stock financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing disclose for ACMR?

The filing discloses that Hui Wang has filed a Rule 144 notice to sell up to 70,000 shares of ACM Research, Inc. (ACMR) common stock, following a stock option exercise, with sales to be executed for cash through Morgan Stanley Smith Barney LLC on NASDAQ.

How many ACMR shares are planned to be sold under this Rule 144 notice?

The notice covers a planned sale of up to 70,000 shares of ACM Research, Inc. common stock. These shares are to be sold for cash through Morgan Stanley Smith Barney LLC under Rule 144.

What is the stated value of the ACMR shares in this Form 144?

The Rule 144 notice lists an aggregate value of approximately $5,408,522.00 for the 70,000 ACMR common shares covered by the planned sale through Morgan Stanley Smith Barney LLC.

When is the planned sale date for the ACMR shares in this Rule 144 filing?

The filing lists an intended transaction date of September 8, 2026 for the sale of the 70,000 ACMR common shares following a stock option exercise.

What is the source of the ACMR shares to be sold by Hui Wang?

The Form 144 indicates that the 70,000 ACMR common shares to be sold by Hui Wang are related to a stock option exercise from the issuer, with the resulting shares to be sold for cash.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/08/2026 - 04:10 PM EDT Accepted by SEC EDGAR 09/08/2026 - 04:09 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001721580
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ACM RESEARCH, INC.
SEC File Number	001-38273
Address of Issuer	42307 Osgood Road, Suite I Fremont CALIFORNIA 94539
Phone	(510) 445-3700
Name of Person for Whose Account the Securities are To Be Sold	HUI WANG
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer
Relationship to Issuer	Director
Relationship to Issuer	10% Stockholder

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	70000	5408522.00	64657388	09/08/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/08/2026	Stock Option Exercise	ISSUER			70000	09/08/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/08/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/05/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Hui Wang
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)