<SEC-DOCUMENT>0001104659-19-055582-index.html : 20191022
<SEC-HEADER>0001104659-19-055582.hdr.sgml : 20191022
<ACCEPTANCE-DATETIME>20191022170511
ACCESSION NUMBER:		0001104659-19-055582
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20191022
DATE AS OF CHANGE:		20191022
EFFECTIVENESS DATE:		20191022

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OSI SYSTEMS INC
		CENTRAL INDEX KEY:			0001039065
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				330238801
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23125
		FILM NUMBER:		191162218

	BUSINESS ADDRESS:	
		STREET 1:		12525 CHADRON AVE
		CITY:			HAWTHORNE
		STATE:			CA
		ZIP:			90250
		BUSINESS PHONE:		3109780516

	MAIL ADDRESS:	
		STREET 1:		12525 CHADRON AVENUE
		CITY:			HAWTHORNE
		STATE:			CA
		ZIP:			90250
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>a19-18784_3defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a19-18784_3defa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g187843bci001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g187843bci001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g187843bci002.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g187843bci002.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g187843bci003.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g187843bci003.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g187843bci004.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g187843bci004.gif

</DOCUMENT>
</SEC-DOCUMENT>