<SEC-DOCUMENT>0001299933-18-000484.txt : 20180607
<SEC-HEADER>0001299933-18-000484.hdr.sgml : 20180607
<ACCEPTANCE-DATETIME>20180607122929
ACCESSION NUMBER:		0001299933-18-000484
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180605
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
FILED AS OF DATE:		20180607
DATE AS OF CHANGE:		20180607

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MKS INSTRUMENTS INC
		CENTRAL INDEX KEY:			0001049502
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				042277512
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23621
		FILM NUMBER:		18885806

	BUSINESS ADDRESS:	
		STREET 1:		2 TECH DRIVE
		STREET 2:		SUITE 201
		CITY:			ANDOVER
		STATE:			MA
		ZIP:			01810
		BUSINESS PHONE:		978-645-5500

	MAIL ADDRESS:	
		STREET 1:		2 TECH DRIVE
		STREET 2:		SUITE 201
		CITY:			ANDOVER
		STATE:			MA
		ZIP:			01810
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>htm_56209.htm
<DESCRIPTION>LIVE FILING
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<TITLE> MKS Instruments, Inc. (Form: 8-K) </TITLE>
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		UNITED STATES<BR>
	SECURITIES AND EXCHANGE COMMISSION
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	WASHINGTON, D.C. 20549
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	FORM 8-K
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	CURRENT REPORT
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	Pursuant to Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934
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	Date of Report (Date of Earliest Event Reported):
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	&nbsp;
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	June 5, 2018
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	MKS Instruments, Inc.
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<BR>__________________________________________<BR>
	(Exact name of registrant as specified in its charter)
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	Massachusetts
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	000-23621
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	04-2277512
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_____________________<BR>
	(State or other jurisdiction
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_____________<BR>
	(Commission
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	(I.R.S. Employer
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	of incorporation)
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	File Number)
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	Identification No.)
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	2 Tech Drive, Suite 201, Andover, Massachusetts
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	01810
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_________________________________<BR>
	(Address of principal executive offices)
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	&nbsp;
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___________<BR>
	(Zip Code)
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	Registrant&#146;s telephone number, including area code:
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	978-645-5500
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	Not Applicable
<BR>______________________________________________<BR>
	Former name or former address, if changed since last report
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	&nbsp;
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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:</FONT>
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[&nbsp;&nbsp;]&nbsp;&nbsp;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<br>
[&nbsp;&nbsp;]&nbsp;&nbsp;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<br>
[&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<br>
[&nbsp;&nbsp;]&nbsp;&nbsp;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<br>
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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;240.12b-2 of this chapter).</FONT>
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Emerging growth company [&nbsp;&nbsp;]<br>
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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. [&nbsp;&nbsp;]<br>
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	Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
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(b) On June 5, 2018, Dennis Werth, Senior Vice President of Business Units of MKS Instruments, Inc. (the "Company"), informed the Company of his intent to retire on July 5, 2019 (the "Retirement Date"). Mr. Werth will continue in his current role with the Company until January 2, 2019 at which time Mr. Werth will transition his role to an advisor.  As an advisor, he will remain an employee of the Company to ensure a smooth transition and will continue to receive his current base salary through his Retirement Date.
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	SIGNATURES
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	Pursuant to the requirements of the Securities Exchange Act of 1934, the
	registrant has duly caused this report to be signed on its behalf by the
	undersigned hereunto duly authorized.
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	MKS Instruments, Inc.
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<I>
	June 7, 2018
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	By:
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<I>
	/s/ Seth H. Bagshaw
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	Name: Seth H. Bagshaw
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	Title: Senior Vice President, Chief Financial Officer and Treasurer
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