# EDGAR Filing Document

**Accession Number:** 0001680062
**File Stem:** 0001628280-26-025599
**Filing Date:** 2026-4
**Character Count:** 9515
**Document Hash:** edef732e00c707b910d3b553c84b4d5c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-025599.hdr.sgml**: 20260417

**ACCESSION NUMBER**: 0001628280-26-025599

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260417

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260417

**DATE AS OF CHANGE**: 20260417

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ACM Research, Inc.
- **CENTRAL INDEX KEY:** 0001680062
- **STANDARD INDUSTRIAL CLASSIFICATION:** SPECIAL INDUSTRY MACHINERY, NEC [3559]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** CA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38273
- **FILM NUMBER:** 26869390

**BUSINESS ADDRESS:**
- **STREET 1:** 42307 OSGOOD ROAD, SUITE I
- **CITY:** FREMONT
- **STATE:** CA
- **ZIP:** 94539
- **BUSINESS PHONE:** 510-445-3700

**MAIL ADDRESS:**
- **STREET 1:** 42307 OSGOOD ROAD, SUITE I
- **CITY:** FREMONT
- **STATE:** CA
- **ZIP:** 94539

?xml version='1.0' encoding='ASCII'? acmr-20260417

**UNITED STATES SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported): April 17, 2026

**ACM Research, Inc.**

*(Exact Name of Registrant as Specified in its Charter)*

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| | | |
|:---|:---|:---|
| **Delaware** | **001-38273** | **94-3290283** |
| *(State or Other Jurisdiction of Incorporation)* | *(Commission File Number)* | *(IRS Employer Identification No.)* |

---

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| | |
|:---|:---|
| **42307 Osgood Road, Suite I**<br>**Fremont, California** | **94539** |
| *(Address of Principal Executive Offices)* | *(Zip Code)* |

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Registrant's telephone number, including area code: **(510) 445-3700**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

□ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

□ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

□ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

□ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading symbol** | **Name of each exchange on which registered** |
| Class A Common Stock, par value $0.0001 per share | ACMR | The Nasdaq Stock Market LLC |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934:Emerging growth company □

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. □

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**Item 8.01 Other Events.**

The shares of the operating subsidiary of ACM Research, Inc. (the "Company"), ACM Research (Shanghai), Inc. ("ACM Shanghai"), are listed on the Sci-Tech innovation board of the Shanghai Stock Exchange (the "SSE").

On April 17, 2026, ACM Shanghai issued an announcement (the "Announcement") to the SSE that ACM Shanghai is proposing to issue overseas listed shares and apply for listing on The Stock Exchange of Hong Kong Limited (the "H Share Listing"). The Announcement was posted to the SSE's website on April 17, 2026. A copy of the Announcement is attached as Exhibit 99.1 hereto.

The information in this Current Report on Form 8-K, including Exhibit 99.1, is intended to be furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section, nor shall it be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended.

This Current Report on Form 8-K and the Announcement contain forward-looking statements that involve risks and uncertainties. These risks and uncertainties include the process for the H Share Listing, whether the H Share Listing will ultimately be implemented, and other risks detailed from time to time in the Company's periodic reports and other filings with the U.S. Securities and Exchange Commission. You are cautioned not to place undue reliance on forward-looking statements, which are based on the Company's current intentions, expectations and assumptions and speak only as of the date of this Current Report on Form 8-K. The Company does not intend to revise or update any forward-looking statement in this Current Report on Form 8-K as a result of new information, future events or otherwise, except as required by law.

**Item 9.01&nbsp;&nbsp;&nbsp;&nbsp;Financial Statements and Exhibits.**

**(d)&nbsp;&nbsp;&nbsp;&nbsp;Exhibits.**

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| | |
|:---|:---|
| **Exhibit** | **Description** |
| <u>[99.1](a417_indicativexannounceme.htm)</u>\*<br>104 | ACM Research (Shanghai), Inc. Indicative Announcement Regarding the Proposed Issuance of H Shares and Listing on The Stock Exchange of Hong Kong Limited, submitted by ACM Research (Shanghai), Inc. to the Shanghai Stock Exchange on April 17, 2026.<br>Cover Page Interactive Data File (embedded within the XBRL document) |

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\* Unofficial English translation of original document prepared in Mandarin Chinese.

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**SIGNATURE**

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.

ACM RESEARCH, INC.

By:&nbsp;&nbsp;&nbsp;&nbsp;<u>/s/ Mark McKechnie</u>________________________

&nbsp;&nbsp;&nbsp;&nbsp;Mark McKechnie

Chief Financial Officer and Treasurer

Dated: April 17, 2026

## Exhibit 99.1

Stock Code: 688082 Stock Abbreviation: ACM Shanghai Announcement No.: 2026-016

**ACM Research (Shanghai), Inc.**

**Indicative Announcement Regarding the Proposed Issuance of H Shares and Listing on The Stock Exchange of Hong Kong Limited**

<u>ACM Shanghai and all members of its Board of Directors hereby warrant that the contents of this announcement contain no false records, misleading statements or material omissions, and is legally liable for its authenticity, accuracy and completeness thereof in accordance with the law.</u>

ACM Research (Shanghai), Inc. (hereinafter referred to as the "Company") is proposed to issue overseas listed shares (H Shares) and apply for listing on The Stock Exchange of Hong Kong Limited (hereinafter referred to as the "HKEX") (hereinafter referred to as the "H Share Listing") with the aim of deepening its strategic development, expanding into international markets, strengthening the Company's capital base, continuously attracting and retaining outstanding talent, further enhancing its overall competitiveness, and consolidating its position in international markets. As of the date of this announcement, ACM Shanghai is in discussion with relevant intermediaries regarding the specific steps to advance the H Share Listing, and the relevant details have not yet been determined. The H Share Listing will not result in any change to ACM Shanghai's controlling shareholder or actual controller.

In accordance with the requirements of applicable laws, regulations and normative documents, including the *Company Law of the People's Republic of China*, the *Securities Law of the People's Republic of China*, the *Rules Governing the Listing of Stocks on the Science and Technology Innovation Board of the Shanghai Stock Exchange*, the *Interim Measures for the Administration of Overseas Securities Offering and Listing by Domestic Companies*, the *Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited*, and the relevant provisions under the laws of the Hong Kong Special Administrative Region governing the

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issuance and listing of shares in Hong Kong by issuers incorporated in the People's Republic of China, upon finalization of the specific proposal, this H Share Listing will be subject to review and approval by the Board of Directors and shareholders' general meeting of ACM Shanghai, and will also require filing or review and approval by relevant government authorities and regulatory bodies, including the China Securities Regulatory Commission, the HKEX, and the Securities and Futures Commission of Hong Kong.

There is significant uncertainty as to whether this H Share Listing will successfully pass the relevant review, filing, and approval procedures and be ultimately implemented. ACM Shanghai will fulfill its information disclosure obligations in a timely manner in accordance with applicable laws, regulations and normative documents and in light of subsequent progress of the H Share Listing, so as to safeguard the legitimate rights and interests of ACM Shanghai and all shareholders. Investors are kindly reminded to pay attention to subsequent announcements and to be mindful of investment risks.

This announcement is hereby issued.

ACM Research (Shanghai), Inc.

Board of Directors

April 18, 2026

<br>