ACMR Insider Files Form 144 for 30,000-Share Sale on 09/18/2025

Rhea-AI Filing Summary

ACM Research, Inc. (ACMR) Form 144 notifies the SEC of a proposed sale of 30,000 common shares through Morgan Stanley Smith Barney on 09/18/2025, with an aggregate market value of $1,050,000 and 64,180,965 shares outstanding. The filing states the shares were acquired the same day by stock option exercise and paid in cash. The filer represents no undisclosed material adverse information. The filing also discloses two recent sales by the same person in August 2025: 30,000 shares on 08/22/2025 for $900,012 and 30,000 shares on 08/25/2025 for $960,000.

Positive

• Filer complied with Rule 144 disclosure by notifying the SEC and identifying broker, amount, and acquisition method
• Shares were acquired by stock option exercise and paid in cash, a standard, transparent source of securities

Negative

• Insider sold 90,000 shares in recent transactions (30,000 proposed for 09/18/2025 and 60,000 sold in August 2025), totaling approximately $2,910,012 in gross proceeds
• Repeated insider sales within a short period may be interpreted by some investors as increased insider liquidity

Insights

Securities Analyst

TL;DR: Insider notified proposed sale of 30,000 shares (≈$1.05M); prior August sales total another 60,000 shares.

The filing documents a routine Rule 144 notice: the shares were acquired by option exercise on the same date and are to be sold through a broker on NASDAQ. The size of the proposed sale (30,000 shares) represents a small fraction of the company’s outstanding stock (64.18M), suggesting limited immediate dilution or market impact. Recent August dispositions totaling 60,000 shares indicate the insider has been reducing holdings over the past month; while noteworthy, these volumes are modest relative to total shares outstanding.

Corporate Governance Expert

TL;DR: Filing reflects compliance with disclosure rules; no indication of undisclosed material information.

The notice includes the standard representation that the seller is unaware of undisclosed material adverse facts and indicates the transaction follows Rule 144 procedures. The shares were acquired via stock option exercise and paid in cash, a common insider liquidity event. From a governance perspective, the filing shows transparency; it does not allege misconduct or regulatory issues.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	30000	1050000.00	64180965	09/18/2025	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	09/18/2025	Stock Option Exercise	ISSUER			30000	09/18/2025	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
JIAN WANG 42307 Osgood Road, Suite I Fremont CA 94539	Common	08/25/2025	30000	960000.00
JIAN WANG 42307 Osgood Road, Suite I Fremont CA 94539	Common	08/22/2025	30000	900012.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does ACMR's Form 144 filed on 09/18/2025 disclose?

It discloses a proposed sale of 30,000 common shares via Morgan Stanley Smith Barney on 09/18/2025 with an aggregate market value of $1,050,000.

How were the 30,000 ACMR shares acquired?

The filing states the shares were acquired on 09/18/2025 through a stock option exercise and paid for in cash.

Has the filer sold other ACMR shares recently?

Yes. The filer sold 30,000 shares on 08/22/2025 for $900,012 and 30,000 shares on 08/25/2025 for $960,000.

What percentage of ACMR outstanding shares does the proposed sale represent?

The proposed 30,000-share sale is approximately 0.047% of the reported 64,180,965 outstanding shares.

Which broker will execute the proposed ACMR sale?

The sale is to be executed through Morgan Stanley Smith Barney LLC on the NASDAQ exchange.