<SEC-DOCUMENT>0001193125-18-185818-index.html : 20180607
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<ACCEPTANCE-DATETIME>20180606173757
ACCESSION NUMBER:		0001193125-18-185818
CONFORMED SUBMISSION TYPE:	S-4/A
PUBLIC DOCUMENT COUNT:		9
FILED AS OF DATE:		20180607
DATE AS OF CHANGE:		20180606

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KLA TENCOR CORP
		CENTRAL INDEX KEY:			0000319201
		STANDARD INDUSTRIAL CLASSIFICATION:	OPTICAL INSTRUMENTS & LENSES [3827]
		IRS NUMBER:				042564110
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		S-4/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-224982
		FILM NUMBER:		18884667

	BUSINESS ADDRESS:	
		STREET 1:		ONE TECHNOLOGY DRIVE
		CITY:			MILPITAS
		STATE:			CA
		ZIP:			95035
		BUSINESS PHONE:		4088756000

	MAIL ADDRESS:	
		STREET 1:		ONE TECHNOLOGY DRIVE
		CITY:			MILPITAS
		STATE:			CA
		ZIP:			95035

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KLA INSTRUMENTS CORP
		DATE OF NAME CHANGE:	19920703
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Document 1 - file: d562999ds4a.htm

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Document 2 - file: d562999dex51.htm

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<DESCRIPTION>EX-23.1
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Document 3 - file: d562999dex231.htm

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<FILENAME>d562999dex232.htm
<DESCRIPTION>EX-23.2
<TEXT>
Document 4 - file: d562999dex232.htm

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<DESCRIPTION>EX-99.2
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Document 5 - file: d562999dex992.htm

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Document 6 - file: g562999g06x68.jpg

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Document 7 - file: g562999g16c11.jpg

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<FILENAME>g562999g68w09.jpg
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<TEXT>
Document 8 - file: g562999g68w09.jpg

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Document 9 - file: g562999g74u25.jpg

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