Item 8.01 Other Events.



On July 9, 2021 CMC Materials, Inc. issued a press release entitled "CMC
Materials Receives Favorable ITC Initial Determination Finding a Violation by
DuPont in Patent Infringement Dispute," which is attached hereto as Exhibit 99.1
and incorporated herein by reference.


Item 9.01               Financial Statements and Exhibits.
(d)                     Exhibits

Exhibit No.             Description
  99.1                  Press Release, dated July 9, 2021, entitled "CMC

Materials Receives Favorable


                        ITC Initial Determination Finding a Violation by 

DuPont in Patent


                        Infringement Dispute."
104                     Cover Page Interactive Data File - The Cover Page 

Interactive Data File does


                        not appear in the Interactive Data File because its XBRL tags are embedded
                        within the Inline XBRL document.




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