<SEC-DOCUMENT>0000937556-19-000148-index.html : 20190731
<SEC-HEADER>0000937556-19-000148.hdr.sgml : 20190731
<ACCEPTANCE-DATETIME>20190731161232
ACCESSION NUMBER:		0000937556-19-000148
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		39
CONFORMED PERIOD OF REPORT:	20190731
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20190731
DATE AS OF CHANGE:		20190731

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASIMO CORP
		CENTRAL INDEX KEY:			0000937556
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		IRS NUMBER:				330368882
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1228

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33642
		FILM NUMBER:		19988866

	BUSINESS ADDRESS:	
		STREET 1:		52 DISCOVERY
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618
		BUSINESS PHONE:		949-297-7000

	MAIL ADDRESS:	
		STREET 1:		52 DISCOVERY
		CITY:			IRVINE
		STATE:			CA
		ZIP:			92618
</SEC-HEADER>
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<TYPE>8-K
<SEQUENCE>1
<FILENAME>masi-20190731x8k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: masi-20190731x8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>masi-20190731xex991.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 2 - file: masi-20190731xex991.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>masimoq22019earningspres.htm
<DESCRIPTION>EXHIBIT 99.2
<TEXT>
Document 3 - file: masimoq22019earningspres.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>4
<FILENAME>masimoq22019nongaapsuppl.htm
<DESCRIPTION>EXHIBIT 99.3
<TEXT>
Document 4 - file: masimoq22019nongaapsuppl.htm

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<DOCUMENT>
<TYPE>EX-99.4
<SEQUENCE>5
<FILENAME>masimoq22019nongaapdefs.htm
<DESCRIPTION>EXHIBIT 99.4
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Document 5 - file: masimoq22019nongaapdefs.htm

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<FILENAME>masimologoq12019a.jpg
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Document 6 - file: masimologoq12019a.jpg

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Document 7 - file: masimologoq12019b.jpg

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<FILENAME>masimoq22019earningspres001.jpg
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Document 8 - file: masimoq22019earningspres001.jpg

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Document 9 - file: masimoq22019earningspres002.jpg

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Document 10 - file: masimoq22019earningspres003.jpg

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<FILENAME>masimoq22019earningspres004.jpg
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Document 11 - file: masimoq22019earningspres004.jpg

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<FILENAME>masimoq22019earningspres005.jpg
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Document 12 - file: masimoq22019earningspres005.jpg

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<FILENAME>masimoq22019earningspres006.jpg
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Document 13 - file: masimoq22019earningspres006.jpg

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<FILENAME>masimoq22019earningspres007.jpg
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Document 14 - file: masimoq22019earningspres007.jpg

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<FILENAME>masimoq22019earningspres008.jpg
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Document 15 - file: masimoq22019earningspres008.jpg

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<FILENAME>masimoq22019earningspres009.jpg
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Document 16 - file: masimoq22019earningspres009.jpg

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Document 17 - file: masimoq22019earningspres010.jpg

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Document 18 - file: masimoq22019earningspres011.jpg

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<FILENAME>masimoq22019earningspres012.jpg
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Document 19 - file: masimoq22019earningspres012.jpg

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Document 20 - file: masimoq22019earningspres013.jpg

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Document 21 - file: masimoq22019earningspres014.jpg

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<FILENAME>masimoq22019earningspres015.jpg
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Document 22 - file: masimoq22019earningspres015.jpg

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Document 23 - file: masimoq22019earningspres016.jpg

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<FILENAME>masimoq22019earningspres017.jpg
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Document 24 - file: masimoq22019earningspres017.jpg

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<SEQUENCE>25
<FILENAME>masimoq22019earningspres018.jpg
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Document 25 - file: masimoq22019earningspres018.jpg

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Document 26 - file: masimoq22019nongaapdefs001.jpg

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Document 27 - file: masimoq22019nongaapdefs002.jpg

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Document 28 - file: masimoq22019nongaapdefs003.jpg

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Document 29 - file: masimoq22019nongaapdefs004.jpg

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<SEQUENCE>30
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Document 30 - file: masimoq22019nongaapdefs005.jpg

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<SEQUENCE>31
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Document 31 - file: masimoq22019nongaapdefs006.jpg

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<SEQUENCE>32
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Document 32 - file: masimoq22019nongaapdefs007.jpg

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<DOCUMENT>
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<SEQUENCE>33
<FILENAME>masimoq22019nongaapdefs008.jpg
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Document 33 - file: masimoq22019nongaapdefs008.jpg

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<SEQUENCE>34
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<TEXT>
Document 34 - file: masimoq22019nongaapdefs009.jpg

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<TYPE>GRAPHIC
<SEQUENCE>35
<FILENAME>masimoq22019nongaapsuppl001.jpg
<TEXT>
Document 35 - file: masimoq22019nongaapsuppl001.jpg

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<SEQUENCE>36
<FILENAME>masimoq22019nongaapsuppl002.jpg
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Document 36 - file: masimoq22019nongaapsuppl002.jpg

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<TYPE>GRAPHIC
<SEQUENCE>37
<FILENAME>masimoq22019nongaapsuppl003.jpg
<TEXT>
Document 37 - file: masimoq22019nongaapsuppl003.jpg

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<TYPE>GRAPHIC
<SEQUENCE>38
<FILENAME>masimoq22019nongaapsuppl004.jpg
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Document 38 - file: masimoq22019nongaapsuppl004.jpg

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<DOCUMENT>
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<SEQUENCE>39
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<TEXT>
Document 39 - file: masimoq22019nongaapsuppl005.jpg

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