<SEC-DOCUMENT>0000937556-21-000106-index.html : 20210601
<SEC-HEADER>0000937556-21-000106.hdr.sgml : 20210601
<ACCEPTANCE-DATETIME>20210601173554
ACCESSION NUMBER:		0000937556-21-000106
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210527
FILED AS OF DATE:		20210601
DATE AS OF CHANGE:		20210601

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Shimer Julie Ann
		CENTRAL INDEX KEY:			0001391349

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33642
		FILM NUMBER:		21986694

	MAIL ADDRESS:	
		STREET 1:		18453 LAS CUMBRES ROAD
		CITY:			LOS GATOS
		STATE:			CA
		ZIP:			95033

ISSUER:		

	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:			0101

	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>4
<SEQUENCE>1
<FILENAME>wf-form4_162258333073390.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: wf-form4_162258333073390.html

Document 1 - RAW XML: wf-form4_162258333073390.xml

</DOCUMENT>
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