Item 7.01 Regulation FD Disclosure.

On December 13, 2022, MKS Instruments, Inc. (the "Company") published an updated Net Revenues by End Market & Division presentation (the "Presentation"), which reflects changes to the Company's end market classifications made in the fourth quarter of 2022, as described in the Presentation. The Presentation is available under Events & Presentations in the Investor Relations section of the Company's website at https://investor.mks.com/events-and-presentations.

The information contained in Item 7.01 of this Current Report is being furnished pursuant to Item 7.01 and shall not be deemed filed for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, except as expressly set forth in such filing.


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