ThZeal - The Zeal

MKS Instruments, Inc.

/s/ Seth H. Bagshaw

Date: December 13, 2022

Seth H. Bagshaw

Senior Vice President, Chief Financial Officer and Treasurer

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): December 13, 2022

MKS Instruments, Inc.

(Exact name of registrant as specified in its charter)

Massachusetts

000-23621

04-2277512

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

2 Tech Drive, Suite 201, Andover,

Massachusetts

01810

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: 978-645-5500

Not Applicable

Former name or former address, if changed since last report

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading
Symbol(s)

Name of each exchange

on which registered

Common Stock, no par value

MKSI

Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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.