ACMR / ACM Research, Inc. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

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

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

Stock Code: 688082

Exhibit 99.1 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities No.: 2025-04 Type of investor relation activities ☐ Targeted investor research ☐ Analyst meeting ☐ Media interview ✓ Earnings Call ☐ Press conference ☐ Roadshow ☐ On-site visit ☐ Others Date August 12, 2025 Venue Conference call Representatives of the listed company Chairman: HUI

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1.I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light o

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report on Form 10-Q of ACM Research, Inc. for the quarterly period ended June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark McKechnie, certify that: 1.I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

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 6, 2025 ACM Research, Inc.

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 6, 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

ACM Research Reports Second Quarter 2025 Results

Exhibit 99.1 ACM Research Reports Second Quarter 2025 Results FREMONT, Calif., August 06, 2025 (Globe Newswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its second quarter ended June 30, 2025. “Our results for the first half of 2025 reflect go

Financial Statements and Exhibits, Other Events

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): June 28, 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 N

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): June 12, 2025 ACM Research, Inc.

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): June 12, 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 N

Financial Statements and Exhibits, Other Events

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): June 12, 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 N

Stock Code: 688082

Exhibit 99.1 Stock Code: 688082 Short Name: ACM Shanghai ACM Research (Shanghai), Inc. Records of Investor Relation Activities No. 2025-02 Type of investor relation activities ☐ Survey by specific investors ☐ Analyst meeting ☐ Media interview ✓ Earnings Call ☐ Press conference ☐ Roadshow ☐ On-site visit ☐ Others Date May 15, 2025 Venue Conference call Representatives of the listed company Chairman

Financial Statements and Exhibits, Other Events

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): May 20, 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 Nu

Contract No.: (2025) Hu Yin Dai Zi No. 202412-266 RMB/Foreign Currency Working Capital Loan Contract (Applicable to RMB or foreign currency loans provided to foreign companies and foreign currency loans provided to domestic companies only; Version 5.

Contract No.: (2025) Hu Yin Dai Zi No. 202412-266 RMB/Foreign Currency Working Capital Loan Contract (Applicable to RMB or foreign currency loans provided to foreign companies and foreign currency loans provided to domestic companies only; Version 5.0, 2024) 1 Instructions for Completion I. Please complete this Contract using a blue-black or black signature pen or fountain pen. II. This Contract s

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark McKechnie, certify that: 1.I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report on Form 10-Q of ACM Research, Inc. for the quarterly period ended March 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1.I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light o

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 8, 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 Num

ACM Research Reports First Quarter 2025 Results

Exhibit 99.1 ACM Research Reports First Quarter 2025 Results FREMONT, Calif., May 8, 2025 (GLOBE NEWSWIRE) - ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced packaging applications, today reported financial results for its first quarter ended March 31, 2025. “Our first quarter results mark a good start to 2025. We delivered

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934         Filed by the Registrant ☒     Filed by a Party other than the Registrant  ☐         Check the appropriate box:          ☐     Preliminary Proxy Statement  ☐     Confidential, for Use of the Commission Only (a

Financial Statements and Exhibits, Results of Operations and Financial Condition

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 29, 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

ACM Research Announces Preliminary Unaudited Revenue and Shipments for the First Quarter 2025 Coincides with Release of ACM Shanghai First Quarter 2025 Results ACM Reaffirms 2025 Revenue Outlook

Exhibit 99.1 ACM Research Announces Preliminary Unaudited Revenue and Shipments for the First Quarter 2025 Coincides with Release of ACM Shanghai First Quarter 2025 Results ACM Reaffirms 2025 Revenue Outlook FREMONT, Calif., April. 29, 2025 (GLOBE NEWSWIRE) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934         Filed by the Registrant ☒     Filed by a Party other than the Registrant  ☐         Check the appropriate box:          ☐     Preliminary Proxy Statement  ☐     Confidential, for Use of the Commission Only (as permitted by Rul

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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 18, 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

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): March 20, 2025 ACM Research, Inc.

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): March 20, 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

Stock Code: 688082

Exhibit 99.1 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities No.: 2025-01 Categories of investor relation activities ☐ Targeted investor research ☐ Analyst meeting ☐ Media interview ✓ Results announcement ☐ Press conference ☐ Roadshow ☐ On-site visit ☐ Others Date March 18, 2025 Venue Conference call Representatives of the Listed Company C

ACM Research Appoints Charlie Pappis to Board of Directors

Exhibit 99.1 ACM Research Appoints Charlie Pappis to Board of Directors FREMONT, Calif., March 18, 2025 (GlobeNewswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced packaging applications, today announced the appointment of Charlie Pappis to its Board of Directors, effective March 15, 2025. With the addition of Mr. Pap

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): March 15, 2025 ACM Research, Inc.

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): March 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

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1.I have reviewed this Annual Report on Form 10-K of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of t

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38

As filed with the Securities and Exchange Commission on March 3, 2025

As filed with the Securities and Exchange Commission on March 3, 2025 Registration No.

Calculation of Filing Fee Table Form S-8 (Form Type) ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities

EXHIBIT 107 Calculation of Filing Fee Table Form S-8 (Form Type) ACM Research, Inc.

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No.

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the following Registration Statements: (1) Registration Statement (Form S-8 No.

ACM RESEARCH, INC. LIST OF SUBSIDIARIES

Exhibit 21.01 ACM RESEARCH, INC. LIST OF SUBSIDIARIES Name of Subsidiary Jurisdiction of Incorporation or Organization ACM Research (Shanghai), Inc. People’s Republic of China CleanChip Technologies Limited Hong Kong ACM Research (Wuxi), Inc. People’s Republic of China ACM Research Korea CO., LTD. Republic of Korea Shengwei Research (Shanghai), Inc. (1) People’s Republic of China ACM Research (Sin

ACM RESEARCH, INC. INCENTIVE-BASED COMPENSATION RECOVERY POLICY

ACM RESEARCH, INC. INCENTIVE-BASED COMPENSATION RECOVERY POLICY 1.Policy Purpose. The purpose of this ACM Research, Inc. (the “Company”) Incentive-Based Compensation Recovery Policy (this “Policy”) is to enable the Company to recover Erroneously Awarded Compensation in the event that the Company is required to prepare an Accounting Restatement. This Policy is intended to comply with the requiremen

CERTIFICATION PURSUANT TO 18 U.S.C. 1350,

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report on Form 10-K of ACM Research, Inc. for the year ended December 31, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as ado

Description of ACM Research, Inc. Securities

Exhibit 4.02 Description of ACM Research, Inc. Securities The following information constitutes the “Description of Securities” required by Item 202(a) of Regulation S-K. As of March 3, 2025, ACM Research, Inc. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, which is its Class A common stock, $0.0001 par value per share. References herein

ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539

Exhibit 99.01 ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539 February 28, 2024 By EDGAR Securities and Exchange Commission Division of Corporate Finance 100 F. Street, N.E. Washington, DC 20549 Re: ACM Research, Inc. Submission under Item 9C(a) of Form 10-K Ladies and Gentlemen: ACM Research, Inc. (the “Company”) is submitting the following information pursuant to Item 9C(

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark A. McKechnie, certify that: 1.I have reviewed this annual report on Form 10-K of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 26, 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 Fi

ACM Research Reports Fourth Quarter and Fiscal Year 2024 Results

Exhibit 99.01 ACM Research Reports Fourth Quarter and Fiscal Year 2024 Results FREMONT, Calif., February 26, 2025 (Globe Newswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced packaging applications, today reported financial results for its fourth quarter and fiscal year ended December 31, 2024. “2024 was a year of str

ACM Research Updates 2024 Revenue Outlook and Provides Initial Outlook for 2025 Revenue —Updates 2024 Revenue Outlook to $755 to $770 Million— —Projected 2025 Revenue of $850 to $950 Million— —ACM to Participate at Upcoming Conferences—

Exhibit 99.1 ACM Research Updates 2024 Revenue Outlook and Provides Initial Outlook for 2025 Revenue —Updates 2024 Revenue Outlook to $755 to $770 Million— —Projected 2025 Revenue of $850 to $950 Million— —ACM to Participate at Upcoming Conferences— FREMONT, Calif., Jan. 14, 2025 (GLOBE NEWSWIRE) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semi

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): January 14, 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 Fil

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): November 5, 2024 ACM Research, In

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): November 5, 2024 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark McKechnie, certify that: 1.I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

ACM Research Reports Third Quarter 2024 Results

Exhibit 99.1 ACM Research Reports Third Quarter 2024 Results FREMONT, Calif., Nov 07, 2024 (Globe Newswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its third quarter ended September 30, 2024. “I am pleased to report another strong quarter for

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

© 1997 Commercial Association of Brokers OREGON/SW WASHINGTON (Rev. August/2018) PURCHASE AND SALE AGREEMENT AND RECEIPT FOR EARNEST MONEY (OREGON) ALL RIGHTS RESERVED Page 1 of 12 ACTIVE 700526212v1 COMMERCIAL ASSOCIATION OF BROKERS OREGON/SW WASHIN

© 1997 Commercial Association of Brokers OREGON/SW WASHINGTON (Rev. August/2018) PURCHASE AND SALE AGREEMENT AND RECEIPT FOR EARNEST MONEY (OREGON) ALL RIGHTS RESERVED Page 1 of 12 ACTIVE 700526212v1 COMMERCIAL ASSOCIATION OF BROKERS OREGON/SW WASHINGTON PURCHASE AND SALE AGREEMENT AND RECEIPT FOR EARNEST MONEY (Oregon Commercial Form) AGENCY ACKNOWLEDGMENT Buyer shall execute this Acknowledgment

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): November 7, 2024 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1.I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light o

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report on Form 10-Q of ACM Research, Inc. for the quarterly period ended September 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Sect

ACM Research Announces Preliminary Unaudited Revenue and Shipments for the Third Quarter 2024 Coincides with Release of ACM Shanghai Third Quarter 2024 Results

Exhibit 99.1 ACM Research Announces Preliminary Unaudited Revenue and Shipments for the Third Quarter 2024 Coincides with Release of ACM Shanghai Third Quarter 2024 Results FREMONT, Calif., October 30, 2024 (GLOBE NEWSWIRE) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today announces

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 30, 2024 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

ACMR / ACM Research, Inc. / Shanghai Science & Technology Venture Capital (Group) Co., Ltd. Activist Investment

SC 13D/A 1 e663980sc13da-acm.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D [Rule 13d-101] INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 24.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13D-2(a) (Amendment No. 3)* ACM Research, Inc. (Name of Issuer) Class A Common Stock, par value $0.0001 per share (Title of Class of Securities) 00108J109 (CUSIP

ACMR / ACM Research, Inc. / Shanghai Science & Technology Venture Capital (Group) Co., Ltd. - AMENDMENT NO. 2 TO SCHEDULE 13D Activist Investment

SC 13D/A 1 e663942sc13da-acm.htm AMENDMENT NO. 2 TO SCHEDULE 13D SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D [Rule 13d-101] INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 24.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13D-2(a) (Amendment No. 2)* ACM Research, Inc. (Name of Issuer) Class A Common Stock, par value $0.0001 per share (Title of Class

Financial Statements and Exhibits, Other Events

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): September 30, 2024 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission F

ACM Research’s Operating Subsidiary ACM Research (Shanghai) Provides Backlog Data

Exhibit 99.1 ACM Research’s Operating Subsidiary ACM Research (Shanghai) Provides Backlog Data Fremont, Calif., Sept. 30, 2024–ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today announced that its operating subsidiary ACM Research (Shanghai), Inc. (“ACM Shanghai”) posted backlog figure

ACM Research Reports Second Quarter 2024 Results

Exhibit 99.1 ACM Research Reports Second Quarter 2024 Results FREMONT, Calif., Aug 07, 2024 (Globe Newswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its second quarter ended June 30, 2024. "I am pleased with our second quarter results. We del

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark McKechnie, certify that: 1.I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

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 7, 2024 ACM Research, Inc.

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 7, 2024 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

© 1997 Commercial Association of Brokers OREGON/SW WASHINGTON (Rev. August/2018) PURCHASE AND SALE AGREEMENT AND RECEIPT FOR EARNEST MONEY (OREGON) ALL RIGHTS RESERVED Page 1 of 12 ACTIVE 700526212v1 COMMERCIAL ASSOCIATION OF BROKERS OREGON/SW WASHIN

© 1997 Commercial Association of Brokers OREGON/SW WASHINGTON (Rev. August/2018) PURCHASE AND SALE AGREEMENT AND RECEIPT FOR EARNEST MONEY (OREGON) ALL RIGHTS RESERVED Page 1 of 12 ACTIVE 700526212v1 COMMERCIAL ASSOCIATION OF BROKERS OREGON/SW WASHINGTON PURCHASE AND SALE AGREEMENT AND RECEIPT FOR EARNEST MONEY (Oregon Commercial Form) AGENCY ACKNOWLEDGMENT Buyer shall execute this Acknowledgment

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1.I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light o

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report on Form 10-Q of ACM Research, Inc. for the quarterly period ended June 30, 2024, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1

Financial Statements and Exhibits, Other Events

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): June 18, 2024 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 N

Submission of Matters to a Vote of Security Holders

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): June 13, 2024 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 N

Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Record of Investor Relations Activities No.: 2024-03

Exhibit 99.1 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Record of Investor Relations Activities No.: 2024-03 Categories of investor relations activities ☐ Specific object survey ☐ Analyst meeting ☐ Media interview √ Performance briefing ☐ Press conference ☐ Roadshow ☐ Site visit ☐ Others Date May 10, 2024 Venue Conference call Participants of the listed company Chairman: HU

Financial Statements and Exhibits, Other Events

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): May 14, 2024 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 Nu

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 8, 2024 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 Num

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

ACM Research Reports First Quarter 2024 Results

Exhibit 99.1 ACM Research Reports First Quarter 2024 Results FREMONT, Calif., May 08, 2024 (Globe Newswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its first quarter ended March 31, 2024. “I am pleased with our first quarter results, a solid

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

ACM Research Announces Preliminary Unaudited Revenue and Shipments for the First Quarter 2024 Coincides with Release of ACM Shanghai First Quarter 2024 Results ACM Reaffirms 2024 Revenue Outlook

Exhibit 99.1 ACM Research Announces Preliminary Unaudited Revenue and Shipments for the First Quarter 2024 Coincides with Release of ACM Shanghai First Quarter 2024 Results ACM Reaffirms 2024 Revenue Outlook FREMONT, Calif., April. 26, 2024 (GLOBE NEWSWIRE) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ D

Financial Statements and Exhibits, Results of Operations and Financial Condition

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 26, 2024 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

Financial Statements and Exhibits, Other Events

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): March 12, 2024 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

ACM Research (Shanghai), Inc. Record of Investor Relations Activities No.: 2024-02

Exhibit 99.1 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Record of Investor Relations Activities No.: 2024-02 Categories of investor relations activities ☐Specific object survey □Analyst meeting ☐Media interview √ Performance briefing ☐Press conference □Roadshow ☐Site visit □Others Date March 7, 2024 Venue Conference call Participants of the listed company Chairman: HUI WANG

Calculation of Filing Fee Table Form S-8 (Form Type) ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities

EXHIBIT 107 Calculation of Filing Fee Table Form S-8 (Form Type) ACM Research, Inc.

ACM RESEARCH, INC. as Trustee Dated as of , 20 Debt Securities CROSS-REFERENCE TABLE(1)

EXHIBIT 4.3 ACM RESEARCH, INC. Issuer AND as Trustee INDENTURE Dated as of , 20 Debt Securities CROSS-REFERENCE TABLE(1) SECTION OF TRUST INDENTURE ACT OF 1939, AS AMENDED SECTION(S) OF INDENTURE 310(b) 7.8 311(a) 7.13 311(b) 7.13 312(a) 5.2(a) 312(b) 5.2(b) 312(c) 5.2(c) 313(a) 5.4(a) 313(b) 5.4(b) 313(c) 5.4(b) (1) This Cross-Reference Table does not constitute part of the Indenture and shall no

As filed with the Securities and Exchange Commission on March 18, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on March 18, 2024 Registration No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-8 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 ACM RESEARCH, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ACM RESEARCH, INC. (Exact name of registrant as specified in its charter) Delaware 94-3290283 (State or other jurisdiction of (I.R.S. Employer Identification No.) incorporation or organization) 42307 Osgood Road, Suite I Fremont, California 94539 (Address of prin

Calculation of Filing Fee Table Form S-3 (Form Type) ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities

EXHIBIT 107 Calculation of Filing Fee Table Form S-3 (Form Type) ACM Research, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38

CERTIFICATION PURSUANT TO 18 U.S.C. 1350,

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report on Form 10-K of ACM Research, Inc. for the year ended December 31, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as ado

Description of ACM Research, Inc. Securities

Exhibit 4.05 Description of ACM Research, Inc. Securities The following information constitutes the “Description of Securities” required by Item 202(a) of Regulation S-K. As of February 28, 2024, ACM Research, Inc. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, which is its Class A common stock, $0.0001 par value per share. References he

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (Nos.

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): February 28, 2024 ACM Research, I

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): February 28, 2024 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fi

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the following Registration Statements: (1)Registration Statement (Form S-8 No.

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1.I have reviewed this Annual Report on Form 10-K of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of t

ACM RESEARCH, INC. INCENTIVE-BASED COMPENSATION RECOVERY POLICY

ACM RESEARCH, INC. INCENTIVE-BASED COMPENSATION RECOVERY POLICY 1.Policy Purpose. The purpose of this ACM Research, Inc. (the “Company”) Incentive-Based Compensation Recovery Policy (this “Policy”) is to enable the Company to recover Erroneously Awarded Compensation in the event that the Company is required to prepare an Accounting Restatement. This Policy is intended to comply with the requiremen

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark A. McKechnie, certify that: 1.I have reviewed this annual report on Form 10-K of ACM Research, Inc. 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

ACM Research Reports Fourth Quarter and Fiscal Year 2023 Results

Exhibit 99.1 ACM Research Reports Fourth Quarter and Fiscal Year 2023 Results FREMONT, Calif., Feb. 28, 2023 (Globe Newswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its fourth quarter and fiscal year ended December 31, 2023. “2023 was anothe

Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539 United States We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-222702, 333-232780, 333-254150 and 333-271931) of ACM Research, Inc. of our report dated March 1, 2022 except for the effects of the common stock split d

EX-10.01(E)

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ACM RESEARCH, INC. LIST OF SUBSIDIARIES

Exhibit 21.01 ACM RESEARCH, INC. LIST OF SUBSIDIARIES Name of Subsidiary Jurisdiction of Incorporation or Organization ACM Research (Shanghai), Inc. People’s Republic of China CleanChip Technologies Limited Hong Kong ACM Research (Wuxi), Inc. People’s Republic of China ACM Research Korea CO., LTD. Republic of Korea Shengwei Research (Shanghai), Inc. (1) People’s Republic of China ACM Research (Sin

ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539

Exhibit 99.01 ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539 February 28, 2024 By EDGAR Securities and Exchange Commission Division of Corporate Finance 100 F. Street, N.E. Washington, DC 20549 Re: ACM Research, Inc. Submission under Item 9C(a) of Form 10-K Ladies and Gentlemen: ACM Research, Inc. (the “Company”) is submitting the following information pursuant to Item 9C(

ACMR / ACM Research, Inc. / Yiheng Capital Management, L.P. - YIHENGACMR13GA2 Passive Investment

SC 13G/A 1 yihengacmr13ga2.htm YIHENGACMR13GA2 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.2)* ACM Research, Inc. (Name of Issuer) Ordinary shares, par value $0.01 per share (Title of Class of Securities) 00108J109 (CUSIP Number) Yiheng Capital Management, L.P. 101 California Street, Suite 2880 San Fra

ACMR / ACM Research, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0178-acmresearchincclassa.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: ACM Research, Inc. Class A Title of Class of Securities: Common Stock CUSIP Number: 00108J109 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box

Financial Statements and Exhibits, Other Events

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): January 26, 2024 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

ACM Research (Shanghai), Inc. Record of Investor Relations Activities No.: 2024-01

Exhibit 99.1 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Record of Investor Relations Activities No.: 2024-01 Categories of investor relations activities ☐Specific object survey √Analyst meeting ☐Media interview ☐Performance briefing ☐Press conference ☐Roadshow ☐Site visit ☐Others Date January 26, 2024 Venue Conference call Participants of the listed company Chairman: HUI WA

ACM Research’s Operating Subsidiary ACM Research (Shanghai) Announces Proposed Private Offering of Ordinary Shares

Exhibit 99.1 ACM Research’s Operating Subsidiary ACM Research (Shanghai) Announces Proposed Private Offering of Ordinary Shares FREMONT, Calif., Jan. 25, 2024 (GlobeNewswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today announced that its operating subsidiary, ACM Research (Sha

Financial Statements and Exhibits, Other Events

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): January 25, 2024 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): January 9, 2024 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

ACM Research Updates 2023 Revenue Outlook and Provides Initial Outlook for 2024 Revenue —Updates 2023 Revenue Outlook to $530 to$545 Million —Projected 2024 Revenue of $650 to $725 Million— —ACM to Participate at Upcoming Conference and Event—

Exhibit 99.1 ACM Research Updates 2023 Revenue Outlook and Provides Initial Outlook for 2024 Revenue —Updates 2023 Revenue Outlook to $530 to$545 Million —Projected 2024 Revenue of $650 to $725 Million— —ACM to Participate at Upcoming Conference and Event— FREMONT, Calif., Jan. 9, 2024 (GlobeNewswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for

Financial Statements and Exhibits, Other Events

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): December 21, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fi

Stock Code: 688082

Exhibit 99.1 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Record of Investor Relations Activities No.: 2023-05 Categories of investor relations activities ✓Specific object survey ☐Analyst meeting ☐Media interview ☐Performance briefing ☐Press conference ☐Roadshow ☐Site visit ☐Others Date December 19, 2023 Venue Conference call Participants of the listed company Chairman: HUI W

Stock Code: 688082

Exhibit 99.1 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Record of Investor Relations Activities No.: 2023-04 Categories of investor relations activities ☐ Specific object survey ☐Analyst meeting ☐ Media interview ✓Performance briefing ☐ Press conference ☐Roadshow ☐ Site visit ✓Others (open conference call) Date November 10, 2023 Venue Conference call Participants of the lis

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): November 13, 2023 ACM Research, I

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): November 13, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file numbe

ACM Research Reports Third Quarter 2023 Results

Exhibit 99.1 ACM Research Reports Third Quarter 2023 Results FREMONT, Calif., November 07, 2023 (Globe Newswire) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its third quarter ended September 30, 2023. “We delivered another solid quarter. Revenue

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): November 7, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 27, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

ACM Research Announces Preliminary Unaudited Revenue Range for Third Quarter 2023

Exhibit 99.1 ACM Research Announces Preliminary Unaudited Revenue Range for Third Quarter 2023 FREMONT, Calif., Oct. 27, 2023 (GLOBE NEWSWIRE) - ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today announced that its preliminary unaudited revenue for the third quarter of 2023 is expected

Financial Statements and Exhibits, Other Events

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): September 27, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission F

ACM Research’s Operating Subsidiary ACM Research (Shanghai) Provides Backlog Data

Exhibit 99.1 ACM Research’s Operating Subsidiary ACM Research (Shanghai) Provides Backlog Data FREMONT, Calif., Sept. 27, 2023 (GLOBE NEWSWIRE) – ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today announced that its operating subsidiary ACM Research (Shanghai), Inc. (“ACM Shanghai”) po

Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant

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): September 20, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission F

Armanino LLP

Exhibit 16.1 Armanino LLP 2700 Camino Ramon, Suite 350 San Ramon, CA 94583 925 790 2600 main 925 790 2601 fax Armanino.com September 26, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We have read Item 4.01 of the Current Report on Form 8-K of ACM Research, Inc. dated September 26, 2023, and agree with the statements concerning our firm contained the

Financial Statements and Exhibits, Other Events

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): September 12, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission F

ACM Research (Shanghai), Inc. Record of Investor Relations Activities in August 2023

Exhibit 99.1 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Record of Investor Relations Activities in August 2023 Categories of investor relations activities ☐ Specific object survey ☐ Analyst meeting ☐ Media interview ✓ Performance briefing ☐ Press conference ☐ Roadshow ☐ Site visit ✓ Others (open conference call) Date August 2023 Venue Conference call Participants of the lis

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August 18, 2023 Michael A. Hedge D 949-623-3519 By EDGAR [email protected] Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, DC 20549 Attention: Austin Pattan Jennifer Gowetski Re: ACM Research, Inc. Form 10-K for the Fiscal Year Ended December 31, 2022 File No. 001-38273 Ladies and Gentlemen: We are submitting this letter on behalf of ACM R

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 4, 2023 ACM Research, Inc.

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 4, 2023 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

Modified Form of LEASE © 2018 BOMA OREGON Modified Form of LEASE DCAPDX\4517810.v8 LEASE AGREEMENT Between: HILLSBORO 229, LLC, an Oregon limited liability company ("Landlord") And ACM Research, Inc., a Delaware Corporation ("Tenant") Dated March 6,

oregonleaseagreementapri Modified Form of LEASE © 2018 BOMA OREGON Modified Form of LEASE DCAPDX\4517810.

Q2 2023 Earnings Call Prepared Remarks Q2 2023 Earnings Conference Call Aug 4, 2023 8:00 AM EDT (New York) 8:00 PM CST (Shanghai)

Exhibit 99.02 Q2 2023 Earnings Call Prepared Remarks Q2 2023 Earnings Conference Call Aug 4, 2023 8:00 AM EDT (New York) 8:00 PM CST (Shanghai) Operator Good day, ladies and gentlemen. Thank you for standing by, and welcome to the ACM Research second quarter 2023 Earnings Conference Call. Currently, all participants are in listen-only mode. Later, we will conduct a question-and-answer session, and

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 00

ACM Research Reports Second Quarter 2023 Results

Exhibit 99.01 ACM Research Reports Second Quarter 2023 Results FREMONT, Calif., August 04, 2023 (Globe Newswire) – ACM Research, Inc. (“ACM” or the “Company”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its second quarter ended June 30, 2023. “I am pleased with our second qu

RMB Working Capital Loan Contract (Version 1.0, 2021) SUBJECT TO THE RECEIPT FOR LOAN INSTRUCTIONS

Exhibit 10.01 RMB Working Capital Loan Contract (Version 1.0, 2021) SUBJECT TO THE RECEIPT FOR LOAN INSTRUCTIONS 1. This Contract shall be filled out with a blue-black or black signature pen. 2. This Contract shall be filled out completely, legible and neat. 3. Currency shall be written in Chinese, not replaced by currency symbols. The Chinese name of the currency shall be added before the capital

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): July 25, 2023 ACM Research, Inc.

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): July 25, 2023 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 N

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): July 21, 2023 ACM Research, Inc.

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): July 21, 2023 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 N

Armanino LLP

Exhibit 16.1 Armanino LLP 2700 Camino Ramon Suite 350 San Ramon, CA 94583-5004 925 790 2600 main 925 790 2601 fax armanino.com July 27, 2023 Securities and Exchange Commission 100 F Street N.E. Washington D.C. 20549 Commissioners: We have read item 4.01 of Form 8-K of ACM Research, Inc dated July 27, 2023, and agree with the statements concerning our firm contained therein. We have no basis to agr

ACMR / ACM Research Inc - Class A / Shanghai Science & Technology Venture Capital (Group) Co., Ltd. Passive Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No.

ACMR / ACM Research Inc - Class A / Shanghai Science & Technology Venture Capital (Group) Co., Ltd. Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D [Rule 13d-101] INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 24.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13D-2(a) (Amendment No. 1)* ACM Research, Inc. (Name of Issuer) Class A Common Stock, par value $0.0001 per share (Title of Class of Securities) 00108J109 (CUSIP Number) Guangda LIU Shanghai Sci

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): June 27, 2023 ACM Research, Inc.

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): June 27, 2023 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 N

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): June 15, 2023 ACM Research, Inc.

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): June 15, 2023 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 N

ACMR / ACM Research Inc - Class A / Shanghai Science & Technology Venture Capital (Group) Co., Ltd. Passive Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No.

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT The undersigned hereby agree that this Statement on Schedule 13D with respect to the shares of common stock of ACM Research, Inc., dated the date hereof, is, and any amendments thereto signed by the undersigned shall be, filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act

ACMR / ACM Research Inc - Class A / Shanghai Science & Technology Venture Capital (Group) Co., Ltd. Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D [Rule 13d-101] INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 24.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13D-2(a) (Amendment No. )* ACM Research, Inc. (Name of Issuer) Class A Common Stock, par value $0.0001 per share (Title of Class of Securities) 00108J109 (CUSIP Number) Guangda LIU Shanghai Scie

ACMR / ACM Research Inc - Class A / Shanghai Science & Technology Venture Capital (Group) Co., Ltd. Activist Investment

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Stock Code: 688082

Exhibit 99.01 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities in May 2023 Categories of investor relations activities ☐ Specific object survey ☐ Media interview ☐ Press conference ☐ Site visit ✓ Analyst meeting ☐ Performance briefing ☐ Roadshow ✓ Others (open conference call) Date May 2023 Venue Conference call Participants of the listed c

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): June 2, 2023 ACM Research, Inc. (

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): June 2, 2023 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 Nu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1) Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))  ☐

As filed with the Securities and Exchange Commission on May 15, 2023

As filed with the Securities and Exchange Commission on May 15, 2023 Registration No.

Calculation of Filing Fee Table Form S-8 (Form Type) ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities

EX-FILING FEES 2 exhibit107.htm EX-FILING FEES Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Share (2) Proposed Maximum Aggregate Offering Price (2) Fee Rate

EMPLOYMENT AGREEMENT Party A: ACM Research (Shanghai), Inc. (Hereinafter: “the Company”) Party B: (Hereinafter: “the Employee”) Lisa Feng Mr/Ms: Lisa Feng

Exhibit 10.01 EMPLOYMENT AGREEMENT Party A: ACM Research (Shanghai), Inc. (Hereinafter: “the Company”) Party B: (Hereinafter: “the Employee”) Lisa Feng Mr/Ms: Lisa Feng Detailed employee information is to be filled in on the signature page This Employment Agreement (this “Agreement”) is entered into at Build 4, No.1690 Cai Lun Road, Zhangjiang High-Tech Park, Shanghai on 2022/9/25 in the People’s

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 0

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): May 5, 2023 ACM Research, Inc. (E

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): May 5, 2023 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 Num

ACM Research Reports First Quarter 2023 Results

Exhibit 99.01 ACM Research Reports First Quarter 2023 Results FREMONT, Calif., May. 05, 2023 (Globe Newswire) – ACM Research, Inc. (“ACM” or the “Company”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its first quarter ended March 31, 2023. “We delivered 76% revenue growth an

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ D

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 26, 2023 ACM Research, Inc.

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 26, 2023 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

ACM Research Announces Preliminary Unaudited Revenue Range for First Quarter 2023

Exhibit 99.01 ACM Research Announces Preliminary Unaudited Revenue Range for First Quarter 2023 FREMONT, Calif., April 26, 2023 (Globe Newswire) –– ACM Research, Inc. (“ACM”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging (WLP) applications, today announced that its preliminary unaudited revenue for the first quarter of 2023 is

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 10, 2023 ACM Research, Inc.

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 10, 2023 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

Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities in March 2023

Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities in March 2023 Categories of investor relation activities □ Survey by specific investors √ Analyst meeting □ Media interview □ Results briefing □ Press conference □ Roadshow □ On-site visit √ Others (open conference call) Date March 2023 Venue Conference call Participants of the listed company

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING Commission File Number: 001-40169

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING Commission File Number: 001-40169 (Check One) ☒ Form 10-K ☐ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-CEN ☐ Form N-CSR For Period Ended: December 31, 2022 ☐ Transition Report on Form 10-K ☐ Transition Report on Form 20-F ☐ Transition Report on Form 11-K ☐ Transition Report o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38273 ACM Research,

CERTIFICATION PURSUANT TO 18 U.S.C. 1350,

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report on Form 10-K of ACM Research, Inc. for the year ended December 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as ado

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1. I have reviewed this Annual Report on Form 10-K of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of

ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539

Exhibit 99.01 ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539 March 1, 2023 By EDGAR Securities and Exchange Commission Division of Corporate Finance 100 F. Street, N.E. Washington, DC 20549 Re: ACM Research, Inc. Submission under Item 9C(a) of Form 10-K Ladies and Gentlemen: ACM Research, Inc. (the “Company”) is submitting the following information pursuant to Item 9C(a) o

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 23.01 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statement Nos. 333-222702, 333-232780 and 333-254150 on Form S-8 of our reports dated March 1, 2023, relating to the consolidated financial statements, and the effectiveness of ACM Research, Inc. and subsidiaries’ (the “Company”) internal control over finan

Description of ACM Research, Inc. Securities

Exhibit 4.05 Description of ACM Research, Inc. Securities The following information constitutes the “Description of Securities” required by Item 202(a) of Regulation S-K. As of March 1, 2023, ACM Research, Inc. has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, which is its Class A common stock, $0.0001 par value per share. References herein

Consent of Independent Registered Public Accounting Firm

Exhibit 23.02 Consent of Independent Registered Public Accounting Firm ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539 United States We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-222702, 333-232780 and 333-254150) of ACM Research, Inc. of our report dated March 1, 2022 except for the effects of the common stock split

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark A. McKechnie, certify that: 1. I have reviewed this annual report on Form 10-K of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in ligh

ACM RESEARCH, INC. LIST OF SUBSIDIARIES

Exhibit 21.01 ACM RESEARCH, INC. LIST OF SUBSIDIARIES Name of Subsidiary Jurisdiction of Incorporation or Organization ACM Research (Shanghai), Inc. People’s Republic of China CleanChip Technologies Limited Hong Kong ACM Research (Wuxi), Inc. People’s Republic of China ACM Research Korea CO., LTD. Republic of Korea Shengwei Research (Shanghai), Inc. People’s Republic of China ACM Research (Singapo

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): February 24, 2023 ACM Research, I

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): February 24, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fi

ACM Research Reports Fourth Quarter and Fiscal Year 2022 Results

Exhibit 99.01 ACM Research Reports Fourth Quarter and Fiscal Year 2022 Results FREMONT, Calif., Feb. 24, 2023 (Globe Newswire) – ACM Research, Inc. (“ACM” or the “Company”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its fourth quarter and fiscal year ended December 31, 2022

ACMR / ACM Research Inc / Yiheng Capital Management, L.P. - YIHENG13GA1ACMR Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.1)* ACM Research, Inc. (Name of Issuer) Ordinary shares, par value $0.01 per share (Title of Class of Securities) 00108J109 (CUSIP Number) Yiheng Capital Management, L.P. 101 California Street, Suite 2880 San Francisco, CA 94111 415-582-6360 (Name, Address an

ACMR / ACM Research Inc / VANGUARD GROUP INC - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: ACM Research Inc. Class A Title of Class of Securities: Common Stock CUSIP Number: 00108J109 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d-1(b)

* * *

February 8, 2023 Michael A. Hedge By EDGAR and FedEx D 949-623-3519 Securities and Exchange Commission [email protected] Division of Corporation Finance 100 F. Street, N.E. Washington, DC 20549 Attention: Robert Littlepage Inessa Kessman Re: ACM Research, Inc. Form 10-Q for Fiscal Quarter Ended September 30, 2022 File No. 001-38273 Ladies and Gentlemen: We are submitting this letter on beh

Other Events

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): February 6, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

ACM Research’s Operating Subsidiary ACM Research (Shanghai) Provides Preliminary Financial Results for Fiscal Year 2022

Exhibit 99.01 ACM Research’s Operating Subsidiary ACM Research (Shanghai) Provides Preliminary Financial Results for Fiscal Year 2022 FREMONT, Calif., Jan. 30, 2023 (GlobeNewswire) – ACM Research, Inc. (ACM) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today announced that its operating subsidiary ACM Research (

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): January 30, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

Stock Code: 688082

Exhibit 99.01 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities in December 2022 Categories of investor relation activities ☐ Specific object survey ✓ Analyst meeting ☐ Media interview ☐ Performance briefing ☐ Press conference ☐ Roadshow ☐ Site visit ✓ Others (open conference call) Date December 2022 Venue Conference call Participants of the

Financial Statements and Exhibits, Other Events

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): January 10, 2023 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

ACM Research Reaffirms 2022 Revenue Outlook and Provides Initial Outlook for 2023 Revenue —Reaffirms 2022 Revenue of $365-$385 Million— —Projected 2023 Revenue of $515 to $585 Million— —ACM to Present at Morgan Stanley, Credit Suisse and Needham Inve

Exhibit 99.01 ACM Research Reaffirms 2022 Revenue Outlook and Provides Initial Outlook for 2023 Revenue ?Reaffirms 2022 Revenue of $365-$385 Million? ?Projected 2023 Revenue of $515 to $585 Million? ?ACM to Present at Morgan Stanley, Credit Suisse and Needham Investor Conferences? FREMONT, Calif., Jan. 3, 2023 (GlobeNewswire) ? ACM Research, Inc. (ACM) (NASDAQ: ACMR), a leading supplier of wafer p

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): January 3, 2023 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

Stock Code: 688082

Exhibit 99.01 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities in November 2022 Categories of investor relation activities ? Specific object survey ? Performance briefing ? Media interview ? Analyst meeting ? Press conference ? Roadshow ? Site visit ? Others (investor presentation) Date November 2022 Venue Conference calls & In-person meeti

Financial Statements and Exhibits

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): December 5, 2022 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

* * *

December 5, 2022 Michael A. Hedge By EDGAR and FedEx D 949-623-3519 Securities and Exchange Commission [email protected] Division of Corporation Finance 100 F. Street, N.E. Washington, DC 20549 Attention: Robert Littlepage Inessa Kessman Re: ACM Research, Inc. Form 10-K for the Fiscal Year Ended December 31, 2021 Form 10-Q for Fiscal Quarters Ended June 30, 2022 File No. 001-38273 Ladies a

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38273 ACM R

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report on Form 10-Q of ACM Research, Inc. for the quarterly period ended September 30, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Sect

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark McKechnie, certify that: 1. I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in ligh

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1. I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): November 4, 2022 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

ACM Research Reports Third Quarter 2022 Results

EX-99.1 2 brhc10043758ex99-01.htm EXHIBIT 99.1 Exhibit 99.01 ACM Research Reports Third Quarter 2022 Results FREMONT, Calif., Nov. 04, 2022 (Globe Newswire) – ACM Research, Inc. (“ACM” or the “Company”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its third fiscal quarter end

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 27, 2022 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

ACM Research Announces Preliminary Unaudited Revenue Range for Third Quarter 2022

Exhibit 99.01 ACM Research Announces Preliminary Unaudited Revenue Range for Third Quarter 2022 FREMONT, Calif., Oct. 27, 2022 (GLOBE NEWSWIRE) - ACM Research, Inc. (?ACM?) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging (WLP) applications, today announced that its preliminary unaudited revenue for the third quarter of 2022 is e

ACM Research’s Operating Subsidiary ACM Research (Shanghai) Provides Preliminary Revenue Range and Backlog Data for Third Quarter 2022

Exhibit 99.01 ACM Research?s Operating Subsidiary ACM Research (Shanghai) Provides Preliminary Revenue Range and Backlog Data for Third Quarter 2022 FREMONT, California, October 13, 2022 (GlobeNewswire) ? ACM Research, Inc. (?ACM?) (NASDAQ: ACMR), a leading supplier of wafer cleaning technologies for advanced semiconductor devices, today announced that its operating subsidiary ACM Research (Shangh

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): October 13, 2022 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fil

Financial Statements and Exhibits, Other Events

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): September 2, 2022 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fi

Stock Code: 688082

Exhibit 99.01 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities in August 2022 Categories of investor relation activities ? Specific object survey ? Analyst meeting ? Media interview ? Performance briefing ? Press conference ? Roadshow ? Site visit ? Others (investor presentation) Date August 2022 Place Conference call Receptionists of the l

June 30, 2022 December 31, 2021 Accounts receivable $ 154,627 $ 105,553 Advances from customers 94,421 52,824 Deferred revenue 2,950 3,180

August 16, 2022 By EDGAR and FedEx Securities and Exchange Commission Division of Corporation Finance 100 F.

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1. I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report on Form 10-Q of ACM Research, Inc. for the quarterly period ended June 30, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark McKechnie, certify that: 1. I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in ligh

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38273 ACM Resear

Financial Statements and Exhibits, Results of Operations and Financial Condition

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 5, 2022 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

August 5, 2022

August 5, 2022 Bella Zaslavsky [email protected] T +1 617 951 9054 F +1 617 261 3175 Inessa Kessman Senior Staff Accountant Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: ACM Research, Inc. Form 10-K for Fiscal Year Ended December 31, 2021 Form 10-Q for Fiscal Quarter Ended March 31, 2022 File No. 001-38271 Dear Ms. Kessma

ACM Research Reports Second Quarter 2022 Results

EX-99.01 2 brhc10040418ex99-01.htm EXHIBIT 99.01 Exhibit 99.01 ACM Research Reports Second Quarter 2022 Results FREMONT, Calif., Aug. 05, 2022 (Globe Newswire) – ACM Research, Inc. (“ACM,” and with its subsidiaries, the “Company”) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for

July 21, 2022

CORRESP 1 filename1.htm July 21, 2022 Bella Zaslavsky [email protected] T +1 617 951 9054 F +1 617 261 3175 Inessa Kessman Senior Staff Accountant Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.E. Washington, D.C. 20549 Re: ACM Research, Inc. Form 10-K for Fiscal Year Ended December 31, 2021 Form 10-Q for Fiscal Quarter Ended March 31, 2022 File No. 00

Submission of Matters to a Vote of Security Holders

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): June 30, 2022 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 N

Financial Statements and Exhibits, Other Events

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): June 20, 2022 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 N

ACM Research (Shanghai), Inc. Agenda of 2021 Annual General Meeting of Shareholders

Exhibit 99.02 ACM Research (Shanghai), Inc. Agenda of 2021 Annual General Meeting of Shareholders I. Meeting Time, Place and Voting Method (1) Meeting time: 10:00, June 30, 2022 (2) Meeting mode: communication conference (3) Conveners: board of directors of ACM Research (Shanghai), Inc. (4) Chairperson: HUI WANG, Chairman (5) Online voting system, period and time Online voting system: online votin

Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities in May 2022

Exhibit 99.01 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Records of Investor Relation Activities in May 2022 Categories of investor relation activities ?Specific object survey ?Analyst meeting ? Media interview ? Performance briefing ? Press conference ? Roadshow ? Site visit ? Others Time May 2022 Place Conference call Receptionists of the listed company Chairman: HUI WANG

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1)

DEFR14A 1 ny20002008x5defr14a.htm DEFR14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. 1) Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission O

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? ? ? Filed by a Party other than the Registrant ?? Check the appropriate box: ?? ? ? Preliminary Proxy Statement ?? ? ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? ? ? Def

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? ? ? Filed by a Party other than the Registrant ?? Check the appropriate box: ?? ? ? Preliminary Proxy Statement ?? ? ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? ? ? Def

Financial Statements and Exhibits, Other Events

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): May 9, 2022 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 Num

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? ? ? Filed by a Party other than the Registrant ?? Check the appropriate box: ?? ? ? Preliminary Proxy Statement ?? ? ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-

ACM Research (Shanghai), Inc. Records of Investor Relation Activities in April 2022

Exhibit 99.01 Stock Code: 688082 Short Name: ACM Shanghai ACM Research (Shanghai), Inc. Records of Investor Relation Activities in April 2022 Type of investor relation activities ? Survey by specific investors ? Media interview ? Press conference ? On-site visit ? Analyst meeting ? Results announcement ? Roadshow ? Others (Investor briefing) Date April 2022 Venue Conference call Participants of th

May 19, 2022

Exhibit 16.1 May 19, 2022 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 We have been furnished with a copy of the response to Item 4.01 of Form 8-K for the event that occurred on May 16, 2022, to be filed by our former client, ACM Research, Inc. We agree with the statements made in response to that Item insofar as they relate to our Firm. Very truly yours, BDO China Sh

Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant, Other Events

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): May 16, 2022 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 Nu

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1. I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38273 ACM Resea

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Quarterly Report on Form 10-Q of ACM Research, Inc. for the quarterly period ended March 31, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark McKechnie, certify that: 1. I have reviewed this Quarterly Report on Form 10-Q of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in ligh

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 6, 2022 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 Num

ACM Research Reports First Quarter 2022 Results

Exhibit 99.01 ACM Research Reports First Quarter 2022 Results FREMONT, California, May 6, 2022 (Globe Newswire) ? ACM Research, Inc. (?ACM? or the ?Company?) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today reported financial results for its first fiscal quarter ended March 31, 2022. ?As we announced on April

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01 CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, David H. Wang, certify that: 1. I have reviewed this Annual Report on Form 10-K/A of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report on Form 10-K/A of ACM Research, Inc. for the year ended December 31, 2021, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as a

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark A. McKechnie, certify that: 1. I have reviewed this annual report on Form 10-K/A of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in li

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number:001-3

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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 27, 2022 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

ACM Shanghai Q1 2022 Results Earnings Call Transcript Event Date/Time: April 28, 2022 / 8:00AM China Time

Exhibit 99.02 Opening of Results Announcement ACM Shanghai Q1 2022 Results Earnings Call Transcript Event Date/Time: April 28, 2022 / 8:00AM China Time Company Participants David Wang - Chief Executive Officer Crystal Luo -Board Secretary Crystal Luo Good day, everyone. Welcome to ACMSH?s announcement of the performance of the first quarter in 2022. The following financial data are unaudited. Befo

ACM Research Announces Preliminary Revenue Range for First Quarter 2022

Exhibit 99.01 ACM Research Announces Preliminary Revenue Range for First Quarter 2022 April 27, 2022 ? ACM Research, Inc. (ACM) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging (WLP) applications, today announced that its preliminary revenue for the first quarter of 2022 is expected to be in the range of $40 million to $42 millio

ACM Research (Shanghai), Inc. Record of Investor Relations Activity in March 2022

EX-99.01 2 brhc10036260ex99-01.htm EXHIBIT 99.01 Exhibit 99.01 Stock Code: 688082 Short Name: ACMSH ACM Research (Shanghai), Inc. Record of Investor Relations Activity in March 2022 Category of investor relations activity ✓ Specific object research ✓ Analyst meeting ☐ Media interview ☐ Performance briefing ☐ Press conference ☐ Roadshow ✓ Site visit ✓ Others (Investor presentations) Time March 2022

Financial Statements and Exhibits, Other Events

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 10, 2022 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

Financial Statements and Exhibits, Other Events

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): March 3, 2022 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 N

ACM Research Announces a 3-for-1 Stock Split Effected in Form of a Stock Dividend

Exhibit 99.01 ACM Research Announces a 3-for-1 Stock Split Effected in Form of a Stock Dividend Fremont, Calif. ? March 3, 2022 ? ACM Research, Inc. (ACM) (NASDAQ: ACMR), a leading supplier of wafer processing solutions for semiconductor and advanced wafer-level packaging applications, today announced that its board of directors has approved and declared a 3-for-1 stock split of ACM?s Class A comm

Financial Statements and Exhibits, Other Events

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): February 25, 2022 ACM Research, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-38273 94-3290283 (State or Other Jurisdiction of Incorporation) (Commission Fi

Short Name: ACMSH

Exhibit 99.01 Stock Code: 688082 Short Name: ACMSH Announcement No.: 2022-003 ACM Research (Shanghai), Inc. Announcement of Preliminary Earnings Estimate in 2021 The Board of Directors and all directors of the Company guarantee that there are no misrepresentations, misleading statements or material omissions in the content hereof, and will bear legal responsibility for the authenticity, accuracy a

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-38273 0 ACM Research

CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.01 CERTIFICATION PURSUANT TO 18 U.S.C. 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report on Form 10-K of ACM Research, Inc. for the year ended December 31, 2021, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as ado

Consent of Independent Registered Public Accounting Firm

Exhibit 23.01 Consent of Independent Registered Public Accounting Firm ACM Research, Inc. 42307 Osgood Road, Suite I Fremont, California 94539 United States We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-222702, 333-232780 and 333-254150) of ACM Research, Inc. of our reports dated March 1, 2022, relating to the consolidated financial stateme

EMPLOYMENT AGREEMENT 劳 动 合 同 Party A: ACM Research (Shanghai), Inc. (Hereinafter: "the Company") Party B: (Hereinafter: "the Employee") 乙方：Lisa Feng（以下称“员工”) Mr/Ms:Lisa Feng

Exhibit 10.20 ??????????????? EMPLOYMENT AGREEMENT ? ? ? ? Party A: ACM Research (Shanghai), Inc. (Hereinafter: "the Company") ?????????????????? ????????) Party B: (Hereinafter: "the Employee") ???Lisa Feng????????) Mr/Ms:Lisa Feng Detailed employee information is to be filled in on the signature page ????????????? Page 1 ??????????????? This Employment Agreement (this "Agreement") is entered int

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002 I, Mark A. McKechnie, certify that: 1. I have reviewed this annual report on Form 10-K of ACM Research, Inc. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in ligh

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

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