OSI SYSTEMS INC — Director's Dealing 2010

Mar 24, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OSI SYSTEMS INC (OSIS)
CIK: 0001039065
Period of Report: 2010-03-08

Reporting Person: VISWANATHAN CHAND R (Former Board of Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-08	Common Stock	S	1000	$31.16	Disposed	0	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7688	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Option to Purchase or Sell Common Stock	$		Common Stock (38333)	38333	Direct

Footnotes

F1: Of the total securities, 5,708 are unvested restricted stock

F2: Disposition of shares of common stock were held by the C.R. Vis Trust Fund.

F3: Not applicable

F4: Securities includes both vested and will vest within 1 year.