<SEC-DOCUMENT>0000937556-25-000089-index.html : 20250527
<SEC-HEADER>0000937556-25-000089.hdr.sgml : 20250527
<ACCEPTANCE-DATETIME>20250527172713
ACCESSION NUMBER:		0000937556-25-000089
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		4
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20241231
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<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20241231
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FILED AS OF DATE:		20250527
DATE AS OF CHANGE:		20250527

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MASIMO CORP
		CENTRAL INDEX KEY:			0000937556
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS [3845]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				330368882
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0103

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33642
		FILM NUMBER:		25990030

	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>SD
<SEQUENCE>1
<FILENAME>masi-20250530xformsd.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: masi-20250530xformsd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>masi-20250530xex101xcmr.htm
<DESCRIPTION>EX-1.01
<TEXT>
Document 2 - file: masi-20250530xex101xcmr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>masimologo2020a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: masimologo2020a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>masimologo2020b.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: masimologo2020b.jpg

</DOCUMENT>
</SEC-DOCUMENT>