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    <ACCEPTANCE-DATETIME>20230502160241
    ACCESSION NUMBER:		0001104659-23-055011
    CONFORMED SUBMISSION TYPE:	DFAN14A
    PUBLIC DOCUMENT COUNT:		25
    FILED AS OF DATE:		20230502
    DATE AS OF CHANGE:		20230502

    SUBJECT COMPANY:

    	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:		DFAN14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-33642
    		FILM NUMBER:		23878793

    	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

    FILED BY:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Politan Capital Management LP
    		CENTRAL INDEX KEY:			0001885245
    		IRS NUMBER:				871666292
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DFAN14A

    	BUSINESS ADDRESS:
    		STREET 1:		106 WEST 56TH STREET
    		STREET 2:		10TH FLOOR
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10019
    		BUSINESS PHONE:		(212) 756-2000

    	MAIL ADDRESS:
    		STREET 1:		106 WEST 56TH STREET
    		STREET 2:		10TH FLOOR
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10019
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