<SEC-DOCUMENT>0000950170-23-018877-index.html : 20230508
<SEC-HEADER>0000950170-23-018877.hdr.sgml : 20230508
<ACCEPTANCE-DATETIME>20230508164512
ACCESSION NUMBER:		0000950170-23-018877
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20230508
DATE AS OF CHANGE:		20230508

SUBJECT COMPANY:	

	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:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	000-23621
		FILM NUMBER:		23898425

	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

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Gamma Holding Co Ltd
		CENTRAL INDEX KEY:			0001944422
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144

	BUSINESS ADDRESS:	
		STREET 1:		C/O THE CARLYLE GROUP
		STREET 2:		1001 PENNSYLVANIA AVENUE, NW
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20004
		BUSINESS PHONE:		(251) 300-6657

	MAIL ADDRESS:	
		STREET 1:		C/O THE CARLYLE GROUP
		STREET 2:		1001 PENNSYLVANIA AVENUE, NW
		CITY:			WASHINGTON
		STATE:			DC
		ZIP:			20004
</SEC-HEADER>
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<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
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Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

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