<SEC-DOCUMENT>0000937556-21-000081-index.html : 20210415
<SEC-HEADER>0000937556-21-000081.hdr.sgml : 20210415
<ACCEPTANCE-DATETIME>20210415091650
ACCESSION NUMBER:		0000937556-21-000081
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		10
FILED AS OF DATE:		20210415
DATE AS OF CHANGE:		20210415

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:			0102

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33642
		FILM NUMBER:		21827481

	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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<FILENAME>masi-20200415xdefa14a.htm
<DESCRIPTION>DEF A14A
<TEXT>
Document 1 - file: masi-20200415xdefa14a.htm

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<FILENAME>accessa011a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: accessa011a.jpg

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<SEQUENCE>3
<FILENAME>documenta011.jpg
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<TEXT>
Document 3 - file: documenta011.jpg

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<DOCUMENT>
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<SEQUENCE>4
<FILENAME>masimologo300x1a051a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: masimologo300x1a051a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>masimologoblackwhitea011a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: masimologoblackwhitea011a.jpg

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<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>qrcodea031a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: qrcodea031a.jpg

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<DOCUMENT>
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<SEQUENCE>7
<FILENAME>virtualmeetingicon1a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: virtualmeetingicon1a.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>votea011a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: votea011a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>votesa011a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: votesa011a.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>votingwebaddressa011a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: votingwebaddressa011a.jpg

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