ACMR Form 144: 5,000 shares by Charles Pappis

ACMR filing: a Form 144 notice shows 5,000 shares of Common stock associated with a stock option exercise to be sold by Charles Pappis.

Rhea-AI Filing Summary

ACMR filing: a Form 144 notice shows 5,000 shares of Common stock associated with a stock option exercise to be sold by Charles Pappis. The exercise/sale is dated 04/17/2026, and a prior sale of 5,000 shares on 03/05/2026 generated $250,485.00.

Key Figures

Shares to be sold: 5,000 shares Proceeds from prior sale: $250,485.00 Filing type: Form 144 notice +1 more

4 metrics

Shares to be sold 5,000 shares Stock Option Exercise dated 04/17/2026

Proceeds from prior sale $250,485.00 Sale recorded on 03/05/2026 for 5,000 shares

Filing type Form 144 notice Rule 144 notice of proposed sale (filing excerpt)

Planned sale date 04/17/2026 Date associated with the stock option exercise and issuer sale

Key Terms

Form 144, Stock Option Exercise, ISSUER

3 terms

Form 144 regulatory

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

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"04/17/2026 | 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.

ISSUER regulatory

"Stock Option Exercise | ISSUER | | | 5000 | 04/17/2026 | Cash"

FAQ

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

What does ACMR's Form 144 show about the transaction?

The Form 144 notifies a proposed sale of 5,000 shares of Common stock by Charles Pappis. It lists a stock option exercise dated 04/17/2026 as the method of sale.

How much cash was reported from the recent sale in ACMR's filing?

A recorded sale dated 03/05/2026 shows proceeds of $250,485.00. This amount appears next to the 5,000-share entry in the filing excerpt.

Who is the selling party named in the ACMR Form 144?

The filing names Charles Pappis with an address in Fremont, CA as the seller for the 5,000 shares. The intermediary listed is Morgan Stanley Smith Barney LLC.

What sale method is listed for the 5,000 shares in the ACMR filing?

The excerpt specifies the sale method as a Stock Option Exercise and indicates the transaction is treated as ISSUER and paid in Cash on 04/17/2026.

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

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Accepted by SEC EDGAR 04/17/2026 - 04:06 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	0001475345
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	CHARLES PAPPIS
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	Director

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	5000	260001.00	60705783	04/17/2026	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	04/17/2026	Stock Option Exercise	ISSUER			5000	04/17/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
CHARLES PAPPIS 42307 Osgood Road, Suite I Fremont CA 94539	Common	03/05/2026	5000	250485.00

144: Remarks and Signature

Remarks
Date of Notice	04/17/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/20/2025
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/ Charles Pappis
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)