Who signed ACMR's report related to the STAR Market record?

The report was signed on behalf of ACM Research, Inc. by Mark McKechnie , the company’s Chief Financial Officer and Treasurer.

ACM Research (NASDAQ: ACMR) furnishes Shanghai STAR Market IR activity record

Q: What did ACMR disclose in this 8-K?

ACM Research, Inc. disclosed that its subsidiary, ACM Research (Shanghai), Inc. , filed a Record of August 2025 Investor Relations Activity with the Shanghai Stock Exchange’s STAR Market, and that this record was posted on August 15, 2025.

Q: What is Exhibit 99.1 in ACMR's latest report?

Exhibit 99.1 is an unofficial English translation of the Record of August 2025 Investor Relations Activity that ACM Research (Shanghai), Inc. filed with the Shanghai Stock Exchange on August 15, 2025.

Q: Is the STAR Market record considered filed or furnished by ACMR?

The information about the STAR Market record, including Exhibit 99.1 , is explicitly described as furnished and not deemed “filed” under Section 18 of the Securities Exchange Act of 1934.

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)

Form Type

8-K

Rhea-AI Filing Summary

ACM Research, Inc. reported that its operating subsidiary, ACM Research (Shanghai), Inc., filed a Record of August 2025 Investor Relations Activity with the Shanghai Stock Exchange’s STAR Market. The Shanghai Stock Exchange posted this record on August 15, 2025.

The company furnished an unofficial English translation of this record as Exhibit 99.1 for investors who follow ACM Research’s activities in China. The information, including the exhibit, is being furnished rather than filed, meaning it is not subject to certain liability provisions under U.S. securities laws and is not automatically incorporated into other ACM Research securities filings.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

08/21/2025 - 04:01 PM

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): August 15, 2025

ACM Research, Inc.

(Exact Name of Registrant as Specified in its Charter)

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

42307 Osgood Road, Suite I
Fremont, California		94539
(Address of Principal Executive Offices)		(Zip Code)

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:

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

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. ☐

Item 8.01

Other Events.

The shares of our operating subsidiary ACM Research (Shanghai), Inc. (“ACM Shanghai”) are listed on the Sci-Tech innovation board (the “STAR Market”) of the Shanghai Stock Exchange (the “SSE”). In accordance with the SSE’s rules governing the STAR Market, ACM Shanghai filed with the SSE a Record of August 2025 Investor Relations Activity (the “Record”). The SSE posted the Record to the SSE’s website on August 15, 2025. A copy of the Record 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 ACM Research, Inc. under the Securities Act of 1933, as amended.

Item 9.01

Financial Statements and Exhibits.

(d)

Exhibits.

Exhibit		Description
99.1*		Record of August 2025 Investor Relations Activity filed by ACM Research (Shanghai), Inc. with the Shanghai Stock Exchange on August 15, 2025
104		Cover Page Interactive Data File (embedded within the XBRL document)

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

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:	/s/ Mark McKechnie
		Mark McKechnie
		Chief Financial Officer and Treasurer

Dated: August 21, 2025

Source: View Original Filing on SEC EDGAR

FAQ

What did ACMR disclose in this 8-K?

ACM Research, Inc. disclosed that its subsidiary, ACM Research (Shanghai), Inc., filed a Record of August 2025 Investor Relations Activity with the Shanghai Stock Exchange’s STAR Market, and that this record was posted on August 15, 2025.

What is Exhibit 99.1 in ACMR's latest report?

Exhibit 99.1 is an unofficial English translation of the Record of August 2025 Investor Relations Activity that ACM Research (Shanghai), Inc. filed with the Shanghai Stock Exchange on August 15, 2025.

Is the STAR Market record considered filed or furnished by ACMR?

The information about the STAR Market record, including Exhibit 99.1, is explicitly described as furnished and not deemed “filed” under Section 18 of the Securities Exchange Act of 1934.

Does this ACMR disclosure affect other U.S. securities filings?

The company states that the furnished information, including Exhibit 99.1, shall not be deemed incorporated by reference into any filing of ACM Research, Inc. under the Securities Act of 1933.

Which ACMR subsidiary is listed on the STAR Market in Shanghai?

The subsidiary listed on the Sci-Tech innovation board (STAR Market) of the Shanghai Stock Exchange is ACM Research (Shanghai), Inc..

In what language was the original STAR Market document prepared?

The original Record of August 2025 Investor Relations Activity was prepared in Mandarin Chinese, and ACM Research provided an unofficial English translation as Exhibit 99.1.