<SEC-DOCUMENT>0000937556-19-000016-index.html : 20190108
<SEC-HEADER>0000937556-19-000016.hdr.sgml : 20190108
<ACCEPTANCE-DATETIME>20190108160853
ACCESSION NUMBER:		0000937556-19-000016
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20190102
FILED AS OF DATE:		20190108
DATE AS OF CHANGE:		20190108

REPORTING-OWNER:	

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

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33642
		FILM NUMBER:		19516061

	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:			1229

	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>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wf-form3_154698171681210.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wf-form3_154698171681210.html

Document 1 - RAW XML: wf-form3_154698171681210.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex-24.htm
<DESCRIPTION>EX 24 - JULIE SHIMER
<TEXT>
Document 2 - file: ex-24.htm

</DOCUMENT>
</SEC-DOCUMENT>