OSI SYSTEMS INC — Director's Dealing 2011

Jun 3, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OSI SYSTEMS INC (OSIS)
CIK: 0001039065
Period of Report: 2011-06-01

Reporting Person: SZE VICTOR S (General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-06-03	Common Stock	M	12926	$18.16	Acquired	66914	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-06-01	Option to Sell Common Stock	$17.37	S	2900	Disposed	2011-07-06	Common Stock (2900)	Direct
2011-06-02	Option to Sell Common Stock	$17.37	S	6300	Disposed	2011-07-06	Common Stock (6300)	Direct
2011-06-03	Option to Sell Common Stock	$17.37	S	3726	Disposed	2011-07-06	Common Stock (3726)	Direct
2011-06-03	Option to Sell Common Stock	$18.16	S	7074	Disposed	2011-07-07	Common Stock (7074)	Direct
2011-06-03	Option to Purchase Common Stock	$18.16	M	12926	Disposed	2011-07-07	Common Stock (7386)	Direct