<SEC-DOCUMENT>0000937556-18-000017-index.html : 20180227
<SEC-HEADER>0000937556-18-000017.hdr.sgml : 20180227
<ACCEPTANCE-DATETIME>20180227161247
ACCESSION NUMBER:		0000937556-18-000017
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		22
CONFORMED PERIOD OF REPORT:	20180227
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Regulation FD Disclosure
FILED AS OF DATE:		20180227
DATE AS OF CHANGE:		20180227

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:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33642
		FILM NUMBER:		18645228

	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>8-K
<SEQUENCE>1
<FILENAME>masi-20180227x8k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: masi-20180227x8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>masi-20180227xex991.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 2 - file: masi-20180227xex991.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>q42017supplementalpresen.htm
<DESCRIPTION>EXHIBIT 99.2
<TEXT>
Document 3 - file: q42017supplementalpresen.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>4
<FILENAME>fy20162017supplementalfi.htm
<DESCRIPTION>EXHIBIT 99.3
<TEXT>
Document 4 - file: fy20162017supplementalfi.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>fy20162017supplementalfi001.jpg
<TEXT>
Document 5 - file: fy20162017supplementalfi001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>masimologo2017.jpg
<TEXT>
Document 6 - file: masimologo2017.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>masimologopressreleaseq416.jpg
<TEXT>
Document 7 - file: masimologopressreleaseq416.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>q42017supplementalpresen001.jpg
<TEXT>
Document 8 - file: q42017supplementalpresen001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>q42017supplementalpresen002.jpg
<TEXT>
Document 9 - file: q42017supplementalpresen002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>q42017supplementalpresen003.jpg
<TEXT>
Document 10 - file: q42017supplementalpresen003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>q42017supplementalpresen004.jpg
<TEXT>
Document 11 - file: q42017supplementalpresen004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>q42017supplementalpresen005.jpg
<TEXT>
Document 12 - file: q42017supplementalpresen005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>q42017supplementalpresen006.jpg
<TEXT>
Document 13 - file: q42017supplementalpresen006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>q42017supplementalpresen007.jpg
<TEXT>
Document 14 - file: q42017supplementalpresen007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>q42017supplementalpresen008.jpg
<TEXT>
Document 15 - file: q42017supplementalpresen008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>q42017supplementalpresen009.jpg
<TEXT>
Document 16 - file: q42017supplementalpresen009.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>q42017supplementalpresen010.jpg
<TEXT>
Document 17 - file: q42017supplementalpresen010.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>q42017supplementalpresen011.jpg
<TEXT>
Document 18 - file: q42017supplementalpresen011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>q42017supplementalpresen012.jpg
<TEXT>
Document 19 - file: q42017supplementalpresen012.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>q42017supplementalpresen013.jpg
<TEXT>
Document 20 - file: q42017supplementalpresen013.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>q42017supplementalpresen014.jpg
<TEXT>
Document 21 - file: q42017supplementalpresen014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>q42017supplementalpresen015.jpg
<TEXT>
Document 22 - file: q42017supplementalpresen015.jpg

</DOCUMENT>
</SEC-DOCUMENT>