Investor Relations

Historic Stock Lookup

Week of June 29, 2009

Date	Open	High	Low	Close	Volume
Jun 29, 2009	19.90	20.76	19.27	20.71	124,291
Jun 30, 2009	20.78	21.13	20.27	20.85	129,258
Jul 1, 2009	20.95	21.23	20.58	20.71	144,280
Jul 2, 2009	20.37	20.91	20.16	20.17	193,330

January February March April May June July August September October November December 01020304050607080910111213141516171819202122232425262728293031 2009200820072006200520042003200220012000199919981997

The historical stock information provided is for informational purposes only and is not intended for trading purposes. The historical stock information is provided by Mergent, a third party service, and OSI Systems, Inc. does not maintain or provide information directly to this service. Prices display split-adjusted cost basis per share on that date.