Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal


           Year.

On June 2, 2021, we held our 2021 Annual Meeting of Stockholders at which our stockholders voted, among other things, to approve an amendment to our restated certificate of incorporation to:

• increase the authorized number of shares of Class A common stock from


   50,000,000 to 150,000,000, with 60,000,000 of the 100,000,000 additional
   authorized shares of Class A common stock being available for issuance only as
   dividends on outstanding shares of Class A common stock;

• increase the authorized number of shares of Class B common stock from 2,409,738


   to 5,307,816, with all of the authorized but unissued shares of Class B common
   stock being available for issuance only as dividends on outstanding shares of
   Class B common stock; and

• remove a now-obsolete provision related to the automatic conversion of Class B

common stock into Class A common stock.

In connection with the approval of the amendment to our restated certificate of incorporation, we filed a certificate of amendment to our restated certificate of incorporation with the Secretary of State of the State of Delaware on July 13, 2021.

The foregoing description does not purport to be complete and is subject to, and qualified in its entirety by, the full text of the certificate of amendment to our restated certificate of incorporation, a copy of which is attached hereto as Exhibit 3.01 and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.





(d) Exhibits.

Exhibit                                  Description
  3.01      Certificate of Amendment to Restated Certificate of Incorporation of
            ACM Research, Inc., dated July 13, 2021

     104    Cover Page Interactive Data File (embedded within the XBRL document)

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