OSI Systems Chairman & CEO Deepak Chopra to Open the NASDAQ Stock Market

OSI Systems, Inc. (Nasdaq:OSIS) is pleased to announce that the company's Chairman and CEO, Deepak Chopra, will preside over the NASDAQ Market Open on Wednesday, September 22, 2004 at 9:30 am Eastern Time. OSI Systems has been listed on The NASDAQ National Market since October of 1997.

"As a high-growth technology company OSI Systems has had a wonderful home on The NASDAQ Stock Market. Since our initial listing on NASDAQ in 1997 our revenues have more than tripled. We are honored to have been invited to open the market," stated Deepak Chopra, Chairman and CEO, of OSI Systems.

About OSI Systems, Inc.

OSI Systems Inc. is a Hawthorne, California based diversified global developer, manufacturer and seller of security and inspection systems, medical monitoring products, and optoelectronic-based components, as well as a provider of engineering and manufacturing services. The company has more than 30 years of experience in electronics engineering and manufacturing and maintains offices and production facilities located in more than a dozen countries. OSI Systems implements a strategy of expansion by leveraging its electronics and contract manufacturing capabilities into selective end product markets through organic growth and acquisitions. For more information on OSI Systems Inc. or any of its subsidiary companies, visit www.osi-systems.com.

Although not intended, this press release could be interpreted by some as containing forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements include information regarding our expectations, goals or intentions about the future, including, but not limited to, statements regarding our listing on the NASDAQ Stock Market and about our revenues. The actual results may differ materially from those described in or implied by any forward-looking statement. In particular, there can be no assurance that we will continue to be listed on the NASDAQ Stock Market or that our revenues will continue to grow in the future at the same rates as they have in the past or at all. Other important factors are set forth in our Securities and Exchange Commission filings. All forward-looking statements speak only as of the date made, and we undertake no obligation to update these forward-looking statements.