# EDGAR Filing Document

**Accession Number:** 0001680062
**File Stem:** 0001140361-23-009515
**Filing Date:** 2023-3
**Character Count:** 7483
**Document Hash:** 9892570d01c6902866d80b9922736db6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-23-009515.hdr.sgml**: 20230302

**ACCESSION NUMBER**: 0001140361-23-009515

**CONFORMED SUBMISSION TYPE**: NT 10-K

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230302

**DATE AS OF CHANGE**: 20230301

**EFFECTIVENESS DATE**: 20230302

**FILER**: 

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

**FILING VALUES:**
- **FORM TYPE:** NT 10-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38273
- **FILM NUMBER:** 23696145

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

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

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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### <br>

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### FORM 12b-25

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#### <br>

#### NOTIFICATION OF LATE FILING

#### Commission File Number: 001-40169

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| | |
|:---|:---|
| (Check One) | ☒ Form 10-K ☐ Form 20-F ☐ Form 11-K ☐ Form 10-Q<br> ☐ 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 on Form 10-Q |
|  | For the Transition Period Ended: |

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*Read Instruction (on back page) Before Preparing Form. Please Print or Type.*<br> **Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.**<br>

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

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#### PART I — REGISTRANT INFORMATION

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| |
|:---|
| **ACM Research, Inc.** |
| Full Name of Registrant |
| **N/A** |
| Former Name if Applicable |
| **42307 Osgood Road, Suite I** |
| Address of Principal Executive Office *(Street and Number)* |
| **Fremont, California 94539** |
| City, State and Zip Code |

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#### PART II — RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

(a) The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense

☒ (b) The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-CEN or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the
 prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and

(c) The accountant's statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.

#### PART III — NARRATIVE

State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

ACM Research, Inc. (the "Company") had completed its Annual Report on Form 10-K for the fiscal year ended December 31, 2022 (the "10-K"), and instructed its third party filing service to file the 10-K with the Securities and Exchange Commission prior to the submission deadline on March 1, 2023. Due to technical problems with the filing service's XBRL tagging software, it was unable to timely file the 10-K. The Company filed the 10-K shortly after the submission deadline on March 1, 2023.<br>

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#### PART IV — OTHER INFORMATION

#### <br>

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| | | | |
|:---|:---|:---|:---|
| (1) | Name and telephone number of person to contact in regard to this notification | Name and telephone number of person to contact in regard to this notification | Name and telephone number of person to contact in regard to this notification |
|  | Mark A. McKechnie | 510 | 445-3700 |
|  | (Name) | <br> (Area Code)<br>| (Telephone Number) |
| (2) | Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If the answer is no, identify report(s). | Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If the answer is no, identify report(s). | Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed? If the answer is no, identify report(s). |
|  |  |  | ☒ Yes ☐ No |
| (3) | Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof? | Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof? | Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof? |
|  |  |  | ☒ Yes ☐ No |

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If so: attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.

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#### ACM Research, Inc.

(Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned thereunto duly authorized.

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| | | |
|:---|:---|:---|
| Date: March 1, 2023 | ACM Research, Inc. | ACM Research, Inc. |
|  | By: | /s/ Mark A. McKechnie |
|  | Name: Mark A. McKechnie | Name: Mark A. McKechnie |
|  | Title: Chief Financial Officer, Executive Vice President and Treasurer | Title: Chief Financial Officer, Executive Vice President and Treasurer |

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INSTRUCTION: The form may be signed by an executive officer of the registrant or by any other duly authorized representative. The name and title of the person signing the form shall be typed or printed beneath the signature. If the statement is signed on behalf of the registrant by an authorized representative (other than an executive officer), evidence of the representative's authority to sign on behalf of the registrant shall be filed with the form.

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| |
|:---|
| **ATTENTION** |
| **Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).** |

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