<SEC-DOCUMENT>0000937556-19-000160-index.html : 20190823
<SEC-HEADER>0000937556-19-000160.hdr.sgml : 20190823
<ACCEPTANCE-DATETIME>20190823160432
ACCESSION NUMBER:		0000937556-19-000160
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190822
FILED AS OF DATE:		20190823
DATE AS OF CHANGE:		20190823

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FITCH SANFORD
		CENTRAL INDEX KEY:			0001198927

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33642
		FILM NUMBER:		191049168

	MAIL ADDRESS:	
		STREET 1:		1212 TERRA BELLA AVENUE
		CITY:			MOUNTAIN VIEW
		STATE:			CA
		ZIP:			94043

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:			1228

	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>4
<SEQUENCE>1
<FILENAME>wf-form4_156659065589537.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: wf-form4_156659065589537.html

Document 1 - RAW XML: wf-form4_156659065589537.xml

</DOCUMENT>
</SEC-DOCUMENT>