Item 5.07 Submission of Matters to a Vote of Security Holders.



On March 3, 2021, CMC Materials, Inc. (the "Company") held its annual meeting of
stockholders ("Annual Meeting"), at which the following proposals were approved
by the Company's stockholders:

Proposal 1 - Election of three directors, each for a term of three years:

All the Board's nominees for director were elected by the stockholders to serve for a term of three years, by the votes set forth in the table below:



                                        Number of Votes For          Number of Votes Withheld             Broker Non-Votes
                                             Election
Barbara A. Klein                            25,969,323                        727,600                          975,734
David H. Li                                 26,464,208                        232,715                          975,734
William P. Noglows                          25,474,588                       1,222,335                         975,734

Proposal 2 - Advisory (non-binding) vote on the compensation of named executive officers:

The stockholders approved, on an advisory (non-binding) basis, the compensation of named executive officers, by the votes set forth in the table below:



     For         Against     Abstain     Broker Non-Votes
  25,682,400     904,322     110,201         975,734

Proposal 3 - Ratification of the selection of PricewaterhouseCoopers LLP as the Company's independent auditors for fiscal year 2021:

The selection of PricewaterhouseCoopers LLP as the Company's independent auditors for fiscal year 2021 was ratified by the stockholders, by the votes set forth in the table below:



     For         Against     Abstain
  27,000,334     658,617     13,706

Proposal 4 - Approval of the CMC Materials, Inc. 2021 Omnibus Incentive Plan:

The stockholders approved the CMC Materials, Inc. 2021 Omnibus Incentive Plan, by the votes set forth in the table below:



     For         Against     Abstain     Broker Non-Votes
  25,797,821     893,386      5,716          975,734

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