Sec Form 4 Filing - Shanghai Science & Technology Venture Capital (Group) Co., Ltd. @ ACM Research, Inc. - 2024-10-04

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Shanghai Science & Technology Venture Capital (Group) Co., Ltd. 2. Issuer Name and Ticker or Trading Symbol ACM Research, Inc. [ ACMR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) X __ Other (specify below) Possible member of 10% group (Last) (First) (Middle) BOHUA PLAZA, 39TH FLOOR 669, XINZHA, JING'AN DISTRICT 3. Date of Earliest Transaction (MM/DD/YY) 10/04/2024 (Street) SHANGHAI, F4200041 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock, $0.0001 par value 10/04/2024 S 570,735 D $ 21.52 ( 1 ) ( 2 ) 2,833,171 D Class A Common Stock, $0.0001 par value 10/04/2024 S 129,265 D $ 20.94 ( 3 ) 2,703,906 D Class A Common Stock, $0.0001 par value 10/07/2024 S 100,514 D $ 25.36 ( 4 ) 2,603,392 D Class A Common Stock, $0.0001 par value 10/07/2024 S 1,481 D $ 25.02 ( 5 ) 2,601,911 D Class A Common Stock, $0.0001 par value 10/07/2024 S 173,005 D $ 23.32 ( 6 ) 2,428,906 D Class A Common Stock, $0.0001 par value 10/08/2024 S 90,396 D $ 21.13 ( 7 ) 2,338,510 D Class A Common Stock, $0.0001 par value < span class="form4-data"> 3,358,728 I Through Shanghai Pudong Science & Technology Investment Group Co., Ltd. ( 8 ) ( 9 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Shanghai Science & Technology Venture Capital (Group) Co., Ltd. BOHUA PLAZA, 39TH FLOOR 669, XINZHA JING'AN DISTRICT SHANGHAI, F4200041 X Possible member of 10% group Shanghai Pudong Science & Technology Investment Group Co., Ltd. NO. 118, RONGKE ROAD, 17TH FLOOR PUDONG NEW AREA SHANGHAI, F4200120 X Possible member of 10% group Signatures /s/ Wangyu Ge, authorized representative 10/08/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The reporting persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes 2 through 7 of this Form 4. ( 2 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $21.11 to $22.10, inclusive. ( 3 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $20.71 to $21.10, inclusive. ( 4 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $25.03 to $26.02, inclusive. ( 5 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $25.01 to $25.02, inclusive. ( 6 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $23.05 to $23.91, inclusive. ( 7 )The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $20.53 to $21.51, inclusive. ( 8 )This Form 4 is being filed by the undersigned as well as Shanghai Pudong Science & Technology Investment Group Co., Ltd., as set forth on the Joint Filer Information Statement attached as an exhibit hereto (the "Reporting Persons"). Shanghai Science & Technology Venture Capital (Group) Co., Ltd. holds a 46% equity interest in Shanghai Pudong Science & Technology Investment Group Co., Ltd. ( 9 )In accordance with Instruction 4(b)(iv) to Form 4, the entire amount of the Issuer's securities held by the Reporting Persons is reported herein. For purposes of Section 16 of the Securities Exchange Act of 1934, as amended, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its indirect pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.

Remarks: The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 plan adopted by Shanghai Science & Technology Venture Capital (Group) Co., Ltd. on June 12, 2024.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.