Item 8.01 Other Events.
On
Item 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit No. Description 99.1 Press Release, datedFebruary 15, 2022 , entitled "CMC Materials Announces Favorable Conclusion in Patent Dispute with DuPont;U.S. Presidential Review Ends Following ITC's Finding of Violation By DuPont." 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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