Item 8.01 Other Events.



On March 9, 2022, CMC Materials, Inc. (the "Company") issued a press release
announcing that its Board of Directors has declared a quarterly cash dividend of
$0.46 per share on the Company's common stock. The dividend will be payable on
or about April 22, 2022 to stockholders of record at the close of business on
March 23, 2022.

As previously announced, on December 14, 2021, the Company entered into an
Agreement and Plan of Merger (as amended from time to time, the "Merger
Agreement") with Entegris, Inc. ("Entegris") and Yosemite Merger Sub, Inc., a
wholly owned subsidiary of Entegris ("Merger Sub") whereby Merger Sub will merge
with and into the Company (the "Merger"). The terms of the Merger Agreement
limit the Company's ability to declare and pay future quarterly cash dividends,
except the Company may declare quarterly cash dividends in an amount not to
exceed $0.46 per share, in a manner consistent with the Company's past
practices, in the event the Merger is not completed by December 14, 2022.


Item 9.01 Financial Statements and Exhibits.



(d)                      Exhibits

Exhibit No.              Description
  99.1                   Press Release, dated March 9, 2022, entitled "CMC Materials Declares
                         Quarterly Cash Dividend."
104                      Cover Page Interactive Data File - The Cover Page

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