UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant [X] Filed by a Party other than the Registrant [_] Check the appropriate box: [_] Preliminary Proxy Statement [_] CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS PERMITTED BY RULE 14A-6(E)(2)) [X] Definitive Proxy Statement [_] Definitive Additional Materials [_] Soliciting Material Pursuant to Section 240.14a-11(c) or Section 240.14a-12 OSI SYSTEMS, INC. - -------------------------------------------------------------------------------- (Name of Registrant as Specified In Its Charter) - -------------------------------------------------------------------------------- (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box): [X] No fee required [_] Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11. (1) Title of each class of securities to which transaction applies: ------------------------------------------------------------------------- (2) Aggregate number of securities to which transaction applies: ------------------------------------------------------------------------- (3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the filing fee is calculated and state how it was determined): ------------------------------------------------------------------------- (4) Proposed maximum aggregate value of transaction: ------------------------------------------------------------------------- (5) Total fee paid: ------------------------------------------------------------------------- [_] Fee paid previously with preliminary materials. [_] Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing. (1) Amount Previously Paid: ------------------------------------------------------------------------- (2) Form, Schedule or Registration Statement No.: ------------------------------------------------------------------------- (3) Filing Party: ------------------------------------------------------------------------- (4) Date Filed: ------------------------------------------------------------------------- Notes:

[LOGO OF OSI SYSTEM, INC.] 12525 Chadron Avenue Hawthorne, California 90250 October 15, 1999 To Our Stockholders: You are cordially invited to attend the Annual Meeting of Stockholders (the "Annual Meeting") of OSI Systems, Inc. (the "Company"), which will be held at 10:00 a.m., local time, on November 17, 1999, at the executive offices at the Company, 12525 Chadron Avenue, Hawthorne, California 90250. All holders of the Company's outstanding common stock as of the close of business on October 11, 1999, are entitled to vote at the Annual Meeting. Enclosed is a copy of the Notice of Annual Meeting of Stockholders, Proxy Statement and Proxy. We hope you will be able to attend the Annual Meeting. Whether or not you expect to attend, it is important that you complete, sign, date and return the Proxy in the enclosed envelope in order to make certain that your shares will be represented at the Annual Meeting. Sincerely, /s/ Ajay Mehra Ajay Mehra Secretary

[LOGO OF OSI SYSTEMS, INC.] 12525 Chadron Avenue Hawthorne, California 90250 NOTICE OF ANNUAL MEETING OF STOCKHOLDERS To Be Held November 17, 1999 NOTICE IS HEREBY GIVEN that the Annual Meeting of Stockholders (the "Annual Meeting") of OSI Systems, Inc., a California corporation (the "Company"), will be held at 10:00 a.m., local time, on November 17, 1999, at the executive offices at the Company, 12525 Chadron Avenue, Hawthorne, California 90250, for the following purposes: 1. To elect five (5) directors to hold office for a one-year term and until their respective successors are elected and qualified. 2. To ratify the selection of Deloitte & Touche L.L.P. as the Company's independent accountants for the fiscal year ending June 30, 2000. 3. To transact such other business as may properly come before the Annual Meeting or any adjournment thereof. The Board of Directors has fixed the close of business on October 11, 1999, as the record date for the determination of stockholders entitled to notice of and to vote at the Annual Meeting and all adjourned meetings thereof. By Order of the Board of Directors /s/ Ajay Mehra Ajay Mehra Secretary Dated: October 15, 1999 ------------------------------------------------------------------------------ PLEASE COMPLETE, DATE, SIGN AND RETURN THE ENCLOSED PROXY IN THE RETURN ENVELOPE FURNISHED FOR THAT PURPOSE AS PROMPTLY AS POSSIBLE, WHETHER OR NOT YOU PLAN TO ATTEND THE ANNUAL MEETING. IF YOU LATER DESIRE TO REVOKE YOUR PROXY FOR ANY REASON, YOU MAY DO SO IN THE MANNER DESCRIBED IN THE ATTACHED PROXY STATEMENT. ------------------------------------------------------------------------------

OSI SYSTEMS, INC. 12525 Chadron Avenue Hawthorne, California 90250 PROXY STATEMENT GENERAL INFORMATION This Proxy Statement is being furnished in connection with the solicitation of proxies by the Board of Directors of OSI Systems, Inc. (the "Company") for use at the Annual Meeting of Stockholders (the "Annual Meeting"), to be held at 10:00 a.m., local time, on November 17, 1999, at the executive offices at the Company, 12525 Chadron Avenue, Hawthorne, California 90250, and at any adjournment thereof. When such proxy is properly executed and returned, the shares it represents will be voted in accordance with any directions noted thereon. Any stockholder giving a proxy has the power to revoke it at any time before it is voted by written notice to the Secretary of the Company or by issuance of a subsequent proxy. In addition, a stockholder attending the Annual Meeting may revoke his or her proxy and vote in person if he or she desires to do so, but attendance at the Annual Meeting will not of itself revoke the proxy. At the close of business on October 11, 1999, the record date for determining stockholders entitled to notice of and to vote at the Annual Meeting, the Company had issued and outstanding 9,739,195 shares of Common Stock, without par value ("Common Stock"). Each share of Common Stock entitles the holder of record thereof to one vote on any matter coming before the Annual Meeting. In voting for directors, however, if any stockholder gives notice at the Annual Meeting prior to voting of an intention to cumulate votes, then each stockholder has the right to cumulate votes and to give any one or more of the nominees whose names have been placed in nomination prior to voting a number of votes equal to the number of directors to be elected (i.e., five) multiplied by the number of shares which the stockholder is entitled to vote. Unless the proxy holders are otherwise instructed, stockholders, by means of the accompanying proxy, will grant the proxy holders discretionary authority to cumulate votes. Only stockholders of record at the close of business on October 11, 1999 are entitled to notice of and to vote at the Annual Meeting or any adjournment thereof. The enclosed Proxy, when properly signed, also confers discretionary authority with respect to amendments or variations to the matters identified in the Notice of Annual Meeting and with respect to other matters which may be properly brought before the Annual Meeting. At the time of printing this Proxy Statement, management of the Company was not aware of any other matters to be presented for action at the Annual Meeting. If, however, other matters which are not now known to management should properly come before the Annual Meeting, the proxies hereby solicited will be exercised on such matters in accordance with the best judgment of the proxy holders. Shares represented by executed and unrevoked proxies will be voted in accordance with the instructions contained therein or in the absence of such instructions, in accordance with the recommendations of the Board of Directors. Neither abstentions nor broker non-votes will be counted for the purposes of determining whether any of the proposals has been approved by the stockholders of the Company, although they will be counted for purposes of determining the presence of a quorum. 1

The election of directors requires a plurality of the votes cast by the holders of the Company's Common Stock. A "plurality" means that the individuals who receive the largest number of affirmative votes cast are elected as directors up to the maximum number of directors to be chosen at the Annual Meeting. The Company will pay the expenses of soliciting proxies for the Annual Meeting, including the cost of preparing, assembling and mailing the proxy solicitation materials. Proxies may be solicited personally, by mail, by telex or by telephone, by directors, officers and regular employees of the Company who will not be additionally compensated therefor. It is anticipated that this Proxy Statement and accompanying Proxy will be mailed on or about October 15, 1999 to all stockholders entitled to vote at the Annual Meeting. The matters to be considered and acted upon at the Annual Meeting are referred to in the preceding notice and are more fully discussed below. ELECTION OF DIRECTORS (Item I of the Proxy Card) The Company has a Board of Directors consisting of five members. At each annual meeting of stockholders, directors are elected for a term of one year to succeed those directors whose terms expire on the annual meeting dates. Management's nominees for election as directors at the Annual Meeting are Deepak Chopra, Ajay Mehra, Steven C. Good, Meyer Luskin and Madan G. Syal. The enclosed Proxy will be voted in favor of these individuals unless other instructions are given. If elected, the nominees will serve as directors until the Company's Annual Meeting of Stockholders in 2000, and until their successors are elected and qualified. If any nominee declines to serve or becomes unavailable for any reason, or if a vacancy occurs before the election (although management knows of no reason to anticipate that this will occur), the proxies may be voted for such substitute nominees as management may designate. If a quorum is present and voting, the five nominees for directors receiving the highest number of votes will be elected as directors. Abstentions and shares held by brokers that are present, but not voted because the brokers were prohibited from exercising discretionary authority, i.e., broker non-votes, will be counted as present for purposes of determining if a quorum is present. The table below sets forth for the current directors, including the nominees to be elected at this meeting, certain information with respect to age and background. Director Name Age Position Since ---- --- -------- -------- Deepak Chopra.............. 47 Chairman of the Board, Chief Executive Officer and President 1987 Ajay Mehra................. 37 Vice President, Chief Financial Officer, Secretary and Director 1996 Steven C. Good(1)(2)....... 57 Director 1987 Meyer Luskin(1)(2)......... 73 Director 1990 Madan G. Syal(1)........... 73 Director 1987 ___________ (1) Member of Audit Committee (2) Member of Compensation Committee 2

Deepak Chopra is the founder of the Company and has served as President, Chief Executive Officer and a Director since the Company's inception in May 1987. He has served as the Company's Chairman of the Board since February 1992. Mr. Chopra also serves as the President and Chief Executive Officer of the Company's major subsidiaries. From 1976 to 1979 and from 1980 to 1987, Mr. Chopra held various positions with ILC Technology, Inc. ("ILC"), a publicly-held manufacturer of lighting products, including serving as Chairman of the Board, Chief Executive Officer, President and Chief Operating Officer of its United Detector Technology division. In 1990, the Company acquired certain assets of ILC's United Detector Technology division. Mr. Chopra has held various positions with Intel Corporation, TRW Semiconductors and RCA Semiconductors. Mr. Chopra holds a Bachelor of Science degree in Electronics and a Master of Science degree in Semiconductor Electronics. Ajay Mehra joined the Company as Controller in 1989, has served as Vice President and Chief Financial Officer since November 1992, and became Secretary and a Director in March 1996. Mr. Mehra also serves as Vice President and Chief Financial Officer of the Company's major subsidiaries. Prior to joining the Company, Mr. Mehra held various financial positions with Thermador/Waste King, a household appliance company, Presto Food Products, Inc. and United Detector Technology. Mr. Mehra holds a Bachelor of Arts degree from the School of Business of the University of Massachusetts, Amherst, and a Master of Business Administration degree from Pepperdine University. Steven C. Good has served as a Director of the Company since September 1987. He is a Senior Partner in the accounting firm of Good Swartz & Berns, which he founded in 1974, and has been active in consulting and advisory services for businesses in various sectors including the manufacturing, garment, medical services and real estate development industries. Mr. Good is the founder and has served as Chairman of California United Bancorp, and was elected in 1997 as a Director of Arden Realty Group, Inc., a publicly-held Real Estate Investment Trust listed on the New York Stock Exchange. Since October 1997, Mr. Good has also served as a Director of Big Dogs, Inc., a publicly held corporation listed on Nasdaq. Mr. Good holds a Bachelor of Science degree in Business Administration from the University of California, Los Angeles. Meyer Luskin has served as a Director of the Company since February 1990. Since 1961, Mr. Luskin has served as the President, Chief Executive Officer and Chairman of the Board of Scope Industries, a publicly-held company listed on the American Stock Exchange, which is engaged in the business of recycling and processing food waste products into animal food. Mr. Luskin has also served as a Director of Scope Industries since 1958 and currently serves as a Director of Stamet, Inc., an industrial solid pump manufacturer, and Chromagen, Inc., a biotechnology company. Mr. Luskin holds a Bachelor of Arts degree from the University of California, Los Angeles, and a Master of Business Administration degree from Stanford University. Madan G. Syal has served as a Director of the Company since the Company's inception in May 1987. From May 1987 until February 1992, he served as Secretary of the Company. Mr. Syal is the sole proprietor of Pro Printers, a printing service business he founded in October 1984. Prior to 1984, Mr. Syal held various positions with Shell Oil Company, Exxon Corporation, Burmah Oil Company, C.F. Braun and Bechtel Group, Incorporated. Mr. Syal holds a Bachelor of Science degree from the American College in Lahore (now Pakistan) and a B.S.E. in Electrical and Mechanical Engineering from London University. 3

Executive Officers Andreas F. Kotowski has served as the President of U.S. Operations, General Manager and a Director of the Company's subsidiary, Rapiscan Security Products (U.S.A.), Inc. ("Rapiscan U.S.A."), since January 1993. As General Manager of Rapiscan U.S.A., Mr. Kotowski is also responsible for the operations of Rapiscan U.K., the subsidiary of Rapiscan U.S.A. From September 1989 to January 1993, Mr. Kotowski was self-employed as an Engineering Consultant, providing technical and management consulting services to businesses in the explosive detection and medical imaging industries. In 1992, Mr. Kotowski was a director of Dextra Medical, Inc., a company that filed for bankruptcy in July of that year. From 1979 to 1989, Mr. Kotowski held various positions with EG&G Astrophysics, including Vice President of Engineering and Chief Engineer, in which he was responsible for product planning, design, development and management. Prior to 1979, he worked as an Engineer at National Semiconductor Corporation and the Jet Propulsion Laboratory. Mr. Kotowski holds a Bachelor of Science degree in Electrical Engineering and a Bachelor of Science degree in Physics from California State Polytechnic University, Pomona, and a Master of Science degree in Electrical Engineering from Stanford University. Anthony S. Crane has served as Managing Director of Rapiscan Security Products Limited ("Rapiscan U.K."), a subsidiary of the Company, since March 1996. From March 1995 to March 1996, he served as Sales and Marketing Director for Rapiscan U.K., and from February 1993 to March 1995, he served as Sales Director--Middle East for Rapiscan U.K. From November 1980 to January 1993, Mr. Crane held various positions at Rapiscan U.K. before it was acquired by the Company, including Exports Business Manager, Sales Manager and Service Engineer. From May 1974 to November 1980, Mr. Crane served as Production Coordinator and Electrical and Electronic Inspector for Redifon Flight Simulation, where he was responsible for production and customer relations. Thomas K. Hickman has served as Managing Director of Opto Sensors (Singapore) Pte Ltd. and Opto Sensors (Malaysia) Sdn. Bhd., subsidiaries of the Company, since July 1995, and as the Managing Director of Rapiscan Consortium (M) Sdn. Bhd. since its formation in October 1996. From July 1993 to July 1995, Mr. Hickman served as Vice President of Operations and Director of Operations for Rapiscan U.S.A. and Rapiscan U.K., respectively. From November 1992 to July 1993, Mr. Hickman served as Director of Materials for UDT Sensors, Inc. ("UDT Sensors"), a subsidiary of the Company, and, from July through November 1992, provided service as an independent consultant to UDT Sensors. From 1985 through 1992, Mr. Hickman held various positions at Mouse Systems Corporation, a manufacturer of computer optical mouse systems, including that of Director of OEM Operations, Purchasing Manager and Representative Director of a joint venture. Prior to 1985, Mr. Hickman was the Director of Materials for Measurex Corporation, the Representative Director for Hitachi-Singer Corp. and a Product Line Manager for Singer Business Machines. Mr. Hickman holds a Bachelor of Arts degree from Stetson University and a Master of Business Administration degree from the University of San Francisco. There are no arrangements or understandings known to the Company between any of the directors or nominees for director of the Company and any other person pursuant to which any such person was or is to be elected a director. Ajay Mehra and Madan G. Syal are the first cousin and father-in-law, respectively, of Deepak Chopra. Other than these relationships, there are no family relationships among the directors and executive officers of the Company. THE BOARD RECOMMENDS A VOTE FOR DEEPAK CHOPRA, AJAY MEHRA, STEVEN C. GOOD, MEYER LUSKIN AND MADAN G. SYAL, AS DIRECTORS. 4

Board of Directors Meetings and Committees of the Board of Directors There were five meetings of the Board of Directors and the Board of Directors acted pursuant to unanimous written consent on one additional occasion during the fiscal year ended June 30, 1999. The Board of Directors has established an Audit Committee and a Compensation Committee. The members of each committee are nominated by the majority vote of the Board of Directors. There is no nominating committee. Audit Committee The Audit Committee makes recommendations for selection of the Company's independent public accountants, reviews with the independent public accountants the plans and results of the audit engagement, approves professional services provided by the independent public accountants, reviews the independence of the independent public accountants, considers the range of audit and any non-audit fees, and reviews the financial statements of the Company and the adequacy of the Company's internal accounting controls and financial management practices. The Audit Committee consists of Messrs. Good, Luskin and Syal. There were two meetings of the Audit Committee during the fiscal year ended June 30, 1999. Compensation Committee The Compensation Committee is responsible for determining compensation for the Company's executive officers, reviewing and approving executive compensation policies and practices, and providing advice and input to the Board of Directors in the administration of the Company's stock option plans. The Compensation Committee presently consists of Messrs. Good and Luskin. There was one meeting of the Compensation Committee during the fiscal year ended June 30, 1999. See "Report of Compensation Committee on Executive Compensation." Director Compensation Each non-employee Director receives a fee of $7,500 per year plus $1,500 for each Board or Committee meeting attended. The Directors are reimbursed for expenses incurred in connection with the performance of their services as Directors. Compensation Committee Interlocks and Insider Participation During the fiscal year ended June 30, 1999, Steven C. Good and Meyer Luskin served on the Compensation Committee. The Company currently intends that any future transactions, if any, with affiliates of the Company will be on terms at least as favorable to the Company as those that can be obtained from nonaffiliated third parties. 5

Executive Compensation and Other Information The following table sets forth the compensation for the Chief Executive Officer and each of the four most highly compensated executive officers whose individual remuneration exceeded $100,000 for the fiscal year ended June 30, 1999 (the "Named Executive Officers"): Summary Compensation Table Annual Long Term Compensation Compensation ------------------ ------------------------------- Securities All Other Salary Bonus Underlying Compensation Name and Principal Position Year ($) ($) Options (#)(2) ($) --------------------------- ---- -------- -------- -------------- --------------- Deepak Chopra(1)................................... 1999 483,723 200,000 5,200 -- Chief Executive Officer 1998 450,000 158,600 0 222,750(3) 1997 370,843 175,000 137,500 -- Ajay Mehra......................................... 1999 221,137 55,000 12,400 -- Chief Financial Officer 1998 200,000 65,300 0 178,200(3) 1997 172,216 58,040 73,750 -- Andreas F. Kotowski................................ 1999 159,594 10,000 1,700 -- President of U.S. Operation, Rapiscan U.S.A. 1998 140,000 30,000 5,000 -- 1997 124,452 10,000 57,029 -- Thomas K. Hickman.................................. 1999 134,732 50,000 650 -- Managing Director, OSI Malaysia and 1998 124,936 50,000 2,500 -- OSI Singapore 1997 124,220 12,500 10,125 -- ____________ (1) The Company paid aggregate insurance premiums of approximately $38,000 for three universal life insurance policies of Mr. Chopra in each of 1999, 1998 and 1997. Mr. Chopra or his estate is obligated to repay to the Company all amounts paid by it on behalf of Mr. Chopra upon the death or termination of employment of Mr. Chopra. The value of such benefit is not susceptible to precise determination. (2) For additional information see "Option Grants." (3) Consists of gain on exercise of non-qualified stock options. The Company has entered into an employment agreement with Deepak Chopra, with a term of five years commencing on April 1, 1997, pursuant to which he serves as Chairman of the Board, Chief Executive Officer and President of the Company. The employment agreement provides for a base salary of $450,000 per year, with annual raises to be determined by the Compensation Committee. The Compensation Committee increased Mr. Chopra's annual base salary to $500,000 effective April 1, 1998. Pursuant to the employment agreement, Mr. Chopra is also entitled to receive at least one-third of the amount of the aggregate bonus pool established by the Company for its officers and employees. During fiscal 1999, Mr. Chopra received a bonus payment of $200,000, which amount was his bonus for fiscal 1998. Mr. Chopra is eligible to participate in certain incentive compensation and other employee benefit plans established by the Company from time to time. Mr. Chopra's employment agreement contains confidentiality provisions and provides that he shall assign and the Company shall be entitled to any inventions or other proprietary rights developed by him under certain circumstances during his employment. In 6

November 1998, Mr. Chopra voluntarily cancelled 30,000 of his options which were granted during the fiscal year ended June 30, 1997. The Company has also entered into a three-year employment agreement with Ajay Mehra, which became effective on April 1, 1997. The employment agreement provides for a base salary of $200,000 per year, with annual raises to be determined by management. The Compensation Committee increased Mr. Mehra's annual base salary to $230,000 effective April 1, 1998. Pursuant to this employment agreement, Mr. Mehra is also eligible to receive discretionary bonus payments from the bonus pool established by the Company for its officers and employees and to participate in incentive compensation and other employee benefit plans established by the Company from time to time. During fiscal 1999, Mr. Mehra received a bonus payment of $55,000, which amount was his bonus for fiscal 1998. The employment agreement contains confidentiality provisions and provides that the employee shall assign and the Company shall be entitled to any inventions or other proprietary rights developed by the employee under certain circumstances during his employment. Andreas F. Kotowski is currently employed by the Company pursuant to an employment agreement that is terminable by either party thereto at any time for any reason. Mr. Kotowski's annual salary for fiscal 1999 was $165,000, which was increased from $140,000 effective April 16, 1998. Pursuant to an incentive compensation agreement entered into in December 1996 by the Company and Mr. Kotowski, he is entitled to receive as additional incentive compensation, 10% of the consolidated pre-tax earnings of Rapiscan U.S.A. and Rapiscan U.K. in excess of certain pre-determined amounts. Such incentive compensation may not exceed $150,000 for any fiscal year and is based on earnings of Rapiscan U.S.A. and Rapiscan U.K. for the 1997, 1998 and 1999 fiscal years. Mr. Kotowski was not entitled to receive such additional incentive compensation for the 1999 fiscal year. Thomas K. Hickman is currently employed by the Company pursuant to an employment agreement that may be terminated by either the Company or by Mr. Hickman upon six months prior notice. Under the employment agreement, Mr. Hickman's annual salary is $125,000. Effective July 1, 1998, his salary was increased to $137,500. In addition to the salary, the Company has agreed to pay certain expenses related to Mr. Hickman's service in Singapore. During fiscal 1999, Mr. Hickman received a bonus payment of $50,000, which amount was his bonus for fiscal 1998. Mr. Hickman's employment agreement contains confidentiality provisions and provides that he shall assign and the Company shall be entitled to any inventions or other proprietary rights developed by him under certain circumstances during his employment. As part of a cost savings program, Messrs. Chopra, Mehra and Kotowski took a voluntary 10% pay cut for the fourth quarter of fiscal 1999. Additionally, during prior periods of fiscal 1999, Messrs. Chopra, Mehra, Kotwoski and Hickman took voluntary pay cuts for which the Company granted to them options to purchase 5,200, 2,400, 1,700 and 650 shares, respectively, of the Company's Common Stock, at an exercise price of $7.00 per share. Management of the Company allocates bonuses to officers and employees of the Company under a bonus plan that has been in effect since the Company's inception. The amount of bonus for each officer or employee is determined by comparing the profits of the subsidiary or division in which such person performed services against the budget profit goals for such subsidiary or division as determined before the start of the fiscal year. No bonuses were distributed to the aforesaid officers relating to the fiscal year ended June 30, 1999. 7

Certain Relationships and Related Transactions On December 23, 1997, the Board of Directors authorized the Company to loan to Deepak Chopra and Ajay Mehra the sum of $90,000 and $70,000 respectively, at an interest rate of six percent per annum, to be repaid within 48 months of such date. Of these amounts, Mr. Chopra has repaid $22,500.00 and Mr. Mehra has repaid $17,500. The Company, Mr. Chopra and Mr. Mehra, each currently owns a 36.0%, 10.5% and 4.5% interest, respectively, in ECIL-Rapiscan Security Products Limited ("ECIL Rapiscan"). The remaining 49.0% interest in ECIL Rapiscan is owned by Electronics Corporation of India Limited ("ECIL"), an unaffiliated Indian company. The Company sells security and inspection kits to ECIL at a price no less favorable to the Company than the price the Company charges unaffiliated third parties for such products. To date, the Company's portion of the earnings of ECIL Rapiscan have been insignificant. The Company contracts for a portion of its automobile rental and daily messenger services from a business that is owned by Deepak Chopra and his wife. The Company paid the business approximately $103,000 for such services during fiscal 1999. The Company also contracts for printing services from a business owned by Madan G. Syal, a Director of the Company. The Company paid the business approximately $76,000 for such services during fiscal 1999. The Company believes that each of the foregoing transactions was on terms at least as favorable to the Company as those that could have been obtained from nonaffiliated third parties. The Company currently intends that any future transactions with affiliates of the Company will be on terms at least as favorable to the Company as those that can be obtained from nonaffiliated third parties. Option Grants The following table sets forth certain information concerning grants of options to the Named Executive Officers during the year ended June 30, 1999: Option Grants In Last Fiscal Year Potential Realizable % of Total Value of Assumed Number of Options Annual Rates of Securities Granted to Stock Price Underlying Employees Exercise Appreciation for Options in Fiscal Price Expiration Option Term(1) ---------------------- Name Granted(#) Year ($/Share) Date 5%($) 10%($) ---- ---------- ---------- -------- ---------- -------- --------- Deepak Chopra 5,200 2.9% 7.00 11/18/03 10,057 22,223 Ajay Mehra 12,400 6.9% 7.00 11/18/03 23,981 52,992 Andreas F. Kotowski 1,700 0.9% 7.00 11/18/03 3,288 7,265 Thomas K. Hickman 650 0.4% 7.00 11/18/03 1,257 2,778 ____________ (1) Sets forth potential option gains based on assumed annualized rates of stock price appreciation from the exercise price at the date of grant of 5% and 10% (compounded annually) over the full term of the grant with appreciation determined as of the expiration date. The 5% and 10% assumed rates of appreciation are mandated by the rules of the Securities and Exchange Commission and do not represent the Company's estimate or projection of future Common Stock prices. 8

All of these options vest in four equal installments, beginning on the first anniversary of the date of grant, which was November 18, 1998. Option Exercises and Fiscal Year-End Values The following table sets forth certain information regarding option exercises by the Named Executive Officers during the fiscal year 1999 and held by them on June 30, 1999: Aggregated Option Exercises In Last Fiscal Year And Fiscal Year-End Option Values Number of Securities Value of Unexercised In- Shares Underlying Unexercised the-Money Options at Name Acquired On Value Options at Fiscal Year-End(#) Fiscal Year End($)(1) ---- ----------------------------- -------------------------- Exercise(#) Realized($) Exercisable Unexercisable Exercisable Unexercisable ------------ ----------- ------------- -------------- ----------- ------------- Deepak Chopra 0 -- 35,000 40,200 0 0 Ajay Mehra 0 -- 21,875 34,275 0 0 Andreas F. Kotowski 0 -- 33,515 30,214 16,250 0 Thomas K. Hickman 0 -- 27,813 5,712 61,375 0 ____________ (1) Amounts are shown as the positive spread between the exercise price and fair market value (based on the fair market price at fiscal year end of $5.00 per share). Stock Option Plans 1987 Incentive Stock Option Plan. In May 1987, the Board of Directors adopted the Incentive Stock Option Plan (the "1987 Plan"). The 1987 Plan provides for the grant of options to directors, officers and other key employees of the Company to purchase up to an aggregate of 1,050,000 shares of Common Stock. The purpose of the 1987 Plan is to provide participants with incentives which will encourage them to acquire a proprietary interest in, and continue to provide services to, the Company. The 1987 Plan is administered by the Board of Directors, which has discretion to select optionees and to establish the terms and conditions of each option, subject to the provisions of the 1987 Plan. Pursuant to the 1987 Plan, the Company has from time to time granted its directors, officers and employees options to purchase shares of the Company's Common Stock at exercise prices determined by the Board of Directors. The stock options generally expire either on the fifth or tenth anniversary of the date of grant of the option. All stock options are nontransferable by the grantee and may be exercised only by the optionee during his service to the Company as a director, officer or employee. The aggregate number of options issuable under the 1987 Plan, number of options outstanding and the exercise price thereof are subject to adjustment in the case of certain transactions such as mergers, recapitalizations, stock splits or stock dividends. As of June 30, 1999, 637,574 shares had been issued upon the exercise of stock options under the 1987 Plan, stock options to purchase an aggregate of 386,424 shares were outstanding under the 1987 Plan at exercise prices ranging from $2.00 to $11.10 per share, and no shares remained available for grant, since the 1987 Plan expired on December 31, 1998. As of such date, stock options to purchase 209,237 shares of Common Stock were exercisable. 1997 Stock Option Plan. In May 1997, the Board of Directors adopted the Company's 1997 Stock Option Plan (the "1997 Plan"). The 1997 Plan, which was approved by the Company's stockholders in June 1997, provides for the grant of options to directors, officers, other employees and consultants of the Company to purchase up to an aggregate of 850,000 shares of Common Stock. No eligible person may be granted options during any 12-month period covering more than 425,000 shares of Common Stock. The purpose of the 1997 Plan is to provide participants with incentives which will encourage them to acquire a proprietary interest in, and continue to provide services to, the Company. The 1997 Plan is administered by the Board of Directors, or a committee of the Board, 9

which has discretion to select optionees and to establish the terms and conditions of each option, subject to the provisions of the 1997 Plan. Options granted under the 1997 Plan may be "incentive stock options" as defined in Section 422 of the Internal Revenue Code of 1986, as amended (the "Code"), or nonqualified options. The exercise price of incentive stock options may not be less than 100% of the fair market value of Common Stock as of the date of grant (110% of the fair market value if the grant is to an employee who owns more than 10% of the total combined voting power of all classes of capital stock of the Company). The Code currently limits to $100,000 the aggregate value of Common Stock that may be acquired in any one year pursuant to incentive stock options under the 1997 Plan or any other option plan adopted by the Company. Nonqualified options may be granted under the 1997 Plan at an exercise price of not less than 85% of the fair market value of the Common Stock on the date of grant. Nonqualified options may be granted without regard to any restriction on the amount of Common Stock that may be acquired pursuant to such options in any one year. Options may not be exercised more than ten years after the date of grant (five years after the date of grant if the grant is an incentive stock option to an employee who owns more than 10% of the total combined voting power of all classes of capital stock of the Company). Options granted under the 1997 Plan generally are nontransferable, but transfers may be permitted under certain circumstances in the discretion of the administrator. Shares subject to options that expire unexercised under the 1997 Plan will once again become available for future grant under the 1997 Plan. The number of options outstanding and the exercise price thereof are subject to adjustment in the case of certain transactions such as mergers, recapitalizations, stock splits or stock dividends. As of June 30, 1999, there were no exercises of stock options under the 1997 Plan, stock options to purchase an aggregate of 421,436 shares were outstanding under the 1997 Plan, at exercise prices ranging from $7.00 to $13.50 per share, and 428,564 shares remained available for grant. As of such date, stock options to purchase 180,218 shares of Common Stock were exercisable. The 1997 Plan is effective for ten years, unless sooner terminated or suspended. During fiscal 1999, the Board of Directors of the Company granted options to purchase an aggregate of 113,500 shares of Common Stock available for issuance under the 1997 Plan to certain officers and employees of the Company. These options are exercisable at a price equal to the fair market value of the Common Stock on the date of grant. The options generally will be subject to vesting and will become exercisable in equal installments over a period of four years from the first anniversary of the date of grant, subject to the optionee's continuing employment with the Company. In general, upon termination of employment of an optionee, all options granted to such person which were not exercisable on the date of such termination will immediately terminate, and any options that are exercisable will terminate not more than three months (six months in the case of termination by reason of death or disability) following termination of employment. To the extent nonqualified options are granted under the 1987 Plan and the 1997 Plan, the Company intends to issue such options with an exercise price of not less than the market price of the Common Stock on the date of grant. Employee Stock Purchase Plan In August 1998, the Board of Directors adopted the Company's Employee Stock Purchase Plan (the "1998 Plan"). The 1998 Plan, which was approved by the Company's stockholders in November 1998, provides persons who have been regular employees of the Company or its U.S. subsidiaries for at least six months, and who meet certain other criteria, the opportunity to purchase through regular payroll deductions up to an aggregate of 200,000 shares of Common Stock. The 1998 Plan is administered by the Board of Directors, or a committee of the Board. The 1998 Plan qualifies as an "employee stock purchase plan" as defined in Section 423 of the Code. 10

To participate in the 1998 Plan, eligible employees submit a form to the Company's payroll office authorizing payroll deductions in an amount between 1% and 10% of the employee's regular annual pay. At the end of each offering period, initially set at six months duration, the aggregate amount deducted from each participating employee's paycheck is applied to the purchase of a whole number of shares of Common Stock, with any sums remaining being returned to the employee. No interest accrues on payroll deductions. The purchase price of the Common Stock is 85% of the lesser of the fair market value of the Common Stock (as determined by the Board of Directors) on the first day or the last day of the offering period. If the aggregate number of shares of Common Stock which all participants elect to purchase during any offering period is greater than the number of shares remaining available for issuance under the 1998 Plan, the remaining shares will be allocated pro-rata among participants. Notwithstanding any of the foregoing, no employee may purchase Common Stock under the 1998 Plan if (i) after any such purchase, the employee would own 5% or more of the total combined voting power or value of all classes of the Company's stock on a consolidated basis, or (ii) the rights to purchase Common Stock under the 1998 Plan and all other qualified employee stock purchase plans of the Company or any of its subsidiaries granted to that employee would exceed $25,000 per calendar year. A participant may elect to withdraw from the 1998 Plan at any time up to the last day of an offering period by filing a form to such effect. Upon withdrawal, the amount contributed to the employee will be refunded in cash, without interest. Any person withdrawing may not participate again in the 1998 Plan until the end of one complete offering period. Termination of a participant's employment for any reason shall be treated as a withdrawal. Employee Benefit Plan, Pension Plans In 1991, the Company established a tax-qualified employee savings and retirement plan (the "401(k) Plan") covering all of its employees. Pursuant to the 401(k) Plan, employees may elect to reduce their current compensation by up to the annual limit prescribed by statute ($10,000 in calendar 1998) and contribute the amount of such reduction to the 401(k) Plan. The 401(k) Plan allows for matching contributions to the 401(k) Plan by the Company, such matching and the amount of such matching to be determined at the sole discretion of the Board of Directors. To date, no such matching contributions have been made with respect to the 401(k) Plan. The trustee under the 401(k) Plan, at the direction of each participant, invests the assets of the 401(k) Plan in numerous investment options. The 401(k) Plan is intended to qualify under Section 401 of the Code so that contributions by employees to the 401(k) Plan, and income earned on plan contributions, are not taxable until withdrawn, and so that the contributions by employees will be deductible by the Company when made. Rapiscan U.K. and Advanced Micro Electronics AS, subsidiaries of the Company, each has a pension plan in effect for certain of their employees. As of the date hereof, approximately 50 employees are covered by these plans. Report of Compensation Committee on Executive Compensation This Compensation Committee Report discusses the components of the Company's executive officer compensation policies and programs and describes the bases upon which compensation is determined by the Compensation Committee with respect to the executive officers of the Company, including the Named Executive Officers. The Compensation Committee reviews and approves salaries, benefits and other compensation for executive officers and reviews bonus pool allocations for key employees of the Company. The Compensation Committee is composed of two non- employee directors. Compensation Philosophy. The Compensation Committee endeavors to ensure that the compensation programs for the executive officers of the Company and its subsidiaries are effective in attracting and retaining key executives 11

responsible for the success of the Company and are administered with the long-term interests of the Company and its stockholders in mind. The Compensation Committee seeks to align total compensation for senior management with corporate performance by linking directly executive compensation to individual and team contributions, continuous improvements in corporate performance and stockholder value. The Compensation Committee takes into account various qualitative and quantitative indicators of corporate and individual performance in determining the level and composition of compensation for the executive officers. The primary quantitative factors reviewed by the Compensation Committee include such financial measures as net income, cash flow and earnings-per-share, and market capitalization of the Company and may vary its quantitative measurements from employee to employee and from year to year. The Compensation Committee also appreciates the importance of achievements that may be difficult to quantify, and accordingly recognizes qualitative factors, such as superior individual performance, new responsibilities or positions within the Company, leadership ability, overall contributions to the Company and the national and global business and economic environment. In order to attract and retain highly qualified executives in the areas in which the Company does business and in recognition of the overall competitiveness of the market for highly qualified executive talent, the Compensation Committee also evaluates the total compensation of the executive officers in light of information regarding the compensation practices and corporate financial performance of other companies in its industry. In implementing its compensation program for executive officers, the Compensation Committee seeks to achieve a balance between compensation and the Company's annual and long-term budgets and business objectives, encourage executive performance in furtherance of stated Company goals, provide variable compensation based on the performance of the Company, create a stake in the executive officer's efforts by encouraging stock ownership in the Company, and align executive remuneration with the interests of the Company's stockholders. Section 162(m) of the Internal Revenue Code generally disallows a tax deduction to public corporations for compensation over $1,000,000 paid for any fiscal year to the corporation's chief executive officer and certain other of the most highly compensated executive officers as of the end of any fiscal year. However, the statute exempts qualifying performance-based compensation from the deduction limit if certain requirements are met. Although, at the present time, the Company is not paying any compensation to any of its executive officers or any other employee that would be disallowed by Section 162(m), the Compensation Committee currently intends to structure performance-based compensation, including stock option grants and annual bonuses, to executive officers who may be subject to Section 162(m) in a manner that satisfies those requirements if, in the future, the need arises. The Board of Directors and the Compensation Committee, however, reserve the authority to award non-deductible compensation in other circumstances as they deem appropriate. Compensation Program Components. The Compensation Committee regularly reviews the Company's compensation program to ensure that pay levels and incentive opportunities are competitive with the market and reflect the performance of the Company. The particular elements of the compensation program for executive officers consist of the following: Base Salary. Base salaries for executive officers are established at levels considered appropriate in light of the duties and scope of responsibilities of each executive officer's position, and the experience the individual brings to the position. Salaries are reviewed periodically and adjusted as warranted to reflect sustained individual performance. Base salaries are kept within a competitive range for each position, reflecting both job performance and market forces. Annual Bonus. Management of the Company allocates bonuses to officers and key employees of the Company under a bonus plan that has been in effect since the Company's inception. The amount of bonus for each officer is determined by comparing the profits of the subsidiary or division in which such person performed services against the budget profit goals for such subsidiary or division as determined before the start of the fiscal year. 12

Long-Term Incentive Compensation. The Company's long-term incentive program consists of periodic grants of stock options, which are made at the discretion of the Board of Directors with the advice and input of the Compensation Committee. Decisions made regarding the amount of the grant and other discretionary aspects of the grant take into consideration Company performance, individual performance and experience, competitive forces to attract and retain senior management, and the nature and terms of grants made in prior years. Chief Executive Officer's Compensation. The Company has entered into an employment agreement with Deepak Chopra, with a term of five years commencing on April 1, 1997, pursuant to which he serves as Chairman of the Board, Chief Executive Officer and President of the Company. The employment agreement provides for a base salary of $450,000 per year, with annual raises to be determined by the Compensation Committee. The Compensation Committee increased Mr. Chopra's annual base salary to $500,000 effective April 1, 1998. Pursuant to the employment agreement, Mr. Chopra is also entitled to receive at least one- third of the amount of the aggregate bonus pool established by the Company for its officers and employees, which amount he received for fiscal 1998. Mr. Chopra is eligible to participate in certain incentive compensation and other employee benefit plans established by the Company from time to time. Summary. The Compensation Committee believes that the total compensation program for executive officers of the Company is focused on increasing value for the Company's stockholders, by attracting and retaining the best qualified people as senior management and enhancing corporate performance. Furthermore, the Compensation Committee believes that executive compensation levels of the Company are competitive with the compensation programs provided by other corporations with which the Company is competitive. The foregoing report has been approved by all the members of the Compensation Committee. COMPENSATION COMMITTEE Steven C. Good Meyer Luskin 13

Performance Graph The following graph compares the Company's cumulative total stockholder return since the Company's Common Stock became publicly traded on October 2, 1997, with the Nasdaq Market Index and a peer group comprised of companies in the optoelectronic and security products businesses with which the Company generally competes. The peer group is comprised of the following companies: Barringer Technologies, Inc. (Nasdaq Symbol: BARR); EG&G, Inc. (ASE Symbol: EGG); InVision Technologies, Inc. (Nasdaq Symbol: INVN); and Vivid Technologies, Inc. (Nasdaq Symbol: VVID). The Company previously included Optek Technology, Inc. ("Optek") (Nasdaq Symbol: OPTT) in its peer group. Optek was acquired in June 1999 by a wholly-owned subsidiary of The Dyson-Kissner-Moran Corporation; accordingly, Optek is not included in the peer group for the entire period presented below. The graph assumes that $100.00 was invested on October 2, 1997 in the Company's Common Stock, at the closing price of $15.13 per share (on which date the initial public offering price was $13.50 per share), and in each of the indexes mentioned above, and that all dividends were reinvested. [PERFORMANCE GRAPH APPEARS HERE] COMPARISON OF CUMULATIVE TOTAL RETURN AMONG OSI SYSTEMS, INC., NASDAQ MARKET INDEX AND PEER GROUP INDEX 10/02/97 12/31/97 3/31/98 6/30/98 9/30/98 12/31/98 3/31/99 6/30/99 -------- -------- ------- ------- ------- -------- ------- ------- OSI Systems, Inc........ 100.00 80.99 76.86 66.12 50.41 57.02 34.30 33.06 Nasdaq Market Index..... 100.00 93.70 109.81 112.65 101.53 131.98 147.45 160.45 Peer Group.............. 100.00 96.42 125.69 124.31 93.22 112.07 104.27 137.29 14

Security Ownership of Certain Beneficial Owners and Management The following table sets forth the amount of shares of the Company beneficially owned as of June 30, 1999 by each director of the Company, each Named Executive Officer, each person known by the Company to own beneficially more than 5% of the outstanding shares of the Company's outstanding Common Stock, and all directors and executive officers as a group: Amount and Nature of Beneficial Ownership of Percent of Class Name of Beneficial Owner Common Stock(1) of Common Stock - ----------------------- ---------------- --------------- Deepak Chopra(2)(3)............................................. 1,409,319 14.4% Ajay Mehra(2)(4)................................................ 187,839 1.9% Andreas F. Kotowski(2)(5)....................................... 138,304 1.4% Thomas K. Hickman(2)(6)......................................... 36,550 * Steven C. Good(2)(7)............................................ 9,375 * Meyer Luskin(8)................................................. 21,742 * Madan G. Syal(2)(9)............................................. 206,057 2.1% Scope Industries(10)(11)........................................ 1,647,903 16.9% Sally F. Chamberlain(12)........................................ 965,853 9.9% Brinson Partners, Inc. (13)..................................... 877,400 9.0% All directors and executive officers as a group (8 persons)..... 2,026,673 20.5% (2)(3)(4)(5)(6)(7)(8)(9) _____________________ * Less than 1.0%. (1) Beneficial ownership is determined in accordance with the rules of the Securities and Exchange Commission and generally includes voting or investment power with respect to securities. Shares of Common Stock subject to options currently exercisable, or exercisable within 60 days of June 30, 1999, are deemed outstanding for computing the percentage of the person holding such options but are not deemed outstanding for computing the percentage of any other person. Except as indicated by footnote and subject to community property laws where applicable, the persons named in the table have sole voting and investment power with respect to all shares of Common Stock shown as beneficially owned by them. (2) The address of such stockholder is c/o OSI Systems, Inc., 12525 Chadron Avenue, Hawthorne, California 90250. (3) Includes 254,951 shares and 254,951 shares owned by The Deepika Chopra Trust UDT dated July 17, 1987 and The Chandini Chopra Trust UDT dated July 17, 1987, respectively. Deepak Chopra is the co-trustee of both irrevocable trusts. Also includes 10,179 shares and 10,179 shares owned by Deepika Chopra and Chandini Chopra, respectively who are the daughters of Mr. Chopra. Of the balance of such shares, 832,434 shares are held jointly by Mr. Chopra and his wife, Nandini Chopra, and 11,625 shares are held individually by Mr. Chopra. Includes 35,000 shares issuable pursuant to options exercisable within 60 days of June 30, 1999. Mr. Chopra is the Chairman of the Board, Chief Executive Officer and President of the Company. (4) Includes 21,875 shares issuable pursuant to options exercisable within 60 days of June 30, 1999. Mr. Mehra is the Vice President, Chief Financial Officer, Secretary and a Director of the Company. (5) Includes 33,515 shares issuable pursuant to options exercisable within 60 days of June 30, 1999. Mr. Kotowski is the President of U.S. Operations of Rapiscan U.S.A. (6) Includes 27,813 shares issuable pursuant to options exercisable within 60 days of June 30, 1999. Mr. Hickman is the Managing Director of OSI Singapore and OSI Malaysia. (7) Includes 3,750 shares issuable pursuant to options exercisable within 60 days of June 30, 1999. Does not include 50,528 shares owned for Mr. Good's benefit by the Good Swartz & Berns Pension & Profit Sharing Plan, of which Mr. Good is a co-trustee and in which he 15

participates. Mr. Good is a Director of the Company. The address of Mr. Good is 11755 Wilshire Boulevard, 17th Floor, Los Angeles, California 90025. (8) Includes 6,742 shares held by the Meyer and Doreen Luskin Family Trust. Includes 15,000 shares issuable pursuant to options exercisable within 60 days of June 30, 1999. Does not include 1,647,903 shares beneficially owned by Scope Industries, Inc., 5,000 shares beneficially owned by Scope Industries, Inc. Retirement Savings Plan and 3,000 shares beneficially owned by Scope Products, Inc. Profit Sharing Plan, as to all of which Mr. Luskin disclaims beneficial ownership. Mr. Luskin is the President, Chief Executive Officer, Chairman of the Board and a principal stockholder of Scope Industries, Inc. The address of Mr. Luskin is c/o Scope Industries, 233 Wilshire Boulevard, Suite 310, Santa Monica, California 90401. (9) Includes 202,307 shares held by Mr. Syal and his wife, Mohini Syal as trustees for the Syal Trust. Includes 3,750 shares issuable pursuant to options exercisable within 60 days of June 30, 1999. Mr. Syal is a Director of the Company. (10) Does not include 5,000 shares beneficially owned by Scope Industries, Inc. Retirement Savings Plan and 3,000 shares beneficially owned by Scope Products, Inc. Profit Sharing Plan. The address of Scope Industries, Inc. is 233 Wilshire Boulevard, Suite 310, Santa Monica, California 90401. (11) Does not include shares beneficially owned by Meyer Luskin. Mr. Luskin is the President, Chief Executive Officer, Chairman of the Board and a principal stockholder of Scope Industries. (12) Based solely upon a review of filings made by such stockholder pursuant to Section 16(a) of the Exchange Act. Such shares are held by Sally F. Chamberlain as Trustee of the Edward P. Fleischer and Sally F. Fleischer Family Trust dated June 3, 1991. The address of Mrs. Chamberlain is c/o Hecht, Solberg, Robinson & Goldberg, LLP, 600 West Broadway, 8th Floor, San Diego, California 92101. (13) As reported in a Schedule 13G filed with the Securities and Exchange Commission by Brinson Partners, Inc., whose address is 209 LaSalle, Chicago, Illinois 60604. Section 16(a) Beneficial Ownership Reporting Compliance Section 16(a) of the Exchange Act requires the Company's executive officers and directors and persons who beneficially own more than 10% of a registered class of the Company's Common Stock to file initial reports of ownership and reports of changes in ownership with the Securities and Exchange Commission. Such officers, directors and stockholders are required by Securities and Exchange Commission regulations to furnish the Company with copies of all such reports that they file. Based solely upon the Company's review of such forms furnished to the Company during the fiscal year ended June 30, 1999, and written representations from certain reporting persons, the Company believes that all filing requirements applicable to the Company's executive officers, directors and more than 10% stockholders have been complied with, except that Mr. Chopra made one late filing with respect to one transaction and Mr. Syal made one late filing with respect to one transaction. RATIFICATION OF SELECTION OF INDEPENDENT ACCOUNTANTS (Item 2 of the Proxy Card) The Board of Directors has selected Deloitte & Touche L.L.P. ("Deloitte & Touche") as the Company's independent accountants for the fiscal year ending June 30, 2000, and has further directed that management submit the selection of independent accountants for ratification by the stockholders at the Annual Meeting. Deloitte & Touche has no financial interest in the Company and neither it nor any member or employee of the firm has had any connection with the Company in the capacity of promoter, underwriter, voting trustee, director, officer or employee. A representative of Deloitte & Touche is not expected to be present at the Annual Meeting. In the event the stockholders fail to ratify the selection of Deloitte & Touche, the Audit Committee will reconsider whether or not to retain the firm. Even if the selection is ratified, the Audit Committee and the Board of Directors in their discretion may direct the appointment of a different independent accounting firm at any time 16

during the year if they determine that such a change would be in the best interests of the Company and its stockholders. THE BOARD OF DIRECTORS RECOMMENDS A VOTE IN FAVOR OF RATIFICATION OF THE SELECTION OF THE INDEPENDENT ACCOUNTANTS. OTHER BUSINESS The Company does not know of any other business to be presented to the Annual Meeting and does not intend to bring any other matters before such meeting. If any other matters properly do come before the Annual Meeting, however, the persons named in the accompanying Proxy are empowered, in the absence of contrary instructions, to vote according to their best judgment. STOCKHOLDER PROPOSALS Any proposals of security holders which are intended to be presented at next year's annual meeting must be received by the Company at its principal executive offices on or before June 15, 2000, in order to be considered for inclusion in the Company's proxy materials relating to that meeting. AVAILABILITY OF ANNUAL REPORT ON FORM 10-K A copy of the Company's Annual Report on Form 10-K as filed with the Securities and Exchange Commission is available upon written request and without charge to stockholders by writing to Ajay Mehra, Secretary, OSI Systems, Inc., 12525 Chadron Avenue, Hawthorne, California 90250. By Order of the Board of Directors /s/ Ajay Mehra Ajay Mehra Secretary Hawthorne, California October 15, 1999 ________________________________________________________________________________ PLEASE COMPLETE, DATE, AND SIGN THE ENCLOSED PROXY AND RETURN IT PROMPTLY IN THE ENCLOSED REPLY ENVELOPE. NO POSTAGE IS REQUIRED IF MAILED IN THE UNITED STATES. ________________________________________________________________________________ 17

PROXY OSI SYSTEMS, INC. PROXY 12525 Chadron Avenue, Hawthorne, CA 90250 This Proxy is Solicited on Behalf of the Board of Directors The undersigned revokes all previous proxies, acknowledges receipt of the Notice of the Annual Meeting of Stockholders and the Proxy Statement and appoints Deepak Chopra and Ajay Mehra and each of them, the Proxy of the undersigned, with full power of substitution, to vote all shares of Common Stock of OSI Systems, Inc. (the "Company") held of record by the undersigned as of the close of business on October 11, 1999, either on his or her own behalf or on behalf of any entity or entities, at the Annual Meeting of Stockholders of the Company to be held November 17, 1999, and at any adjournment or postponement thereof, with the same force and effect as the undersigned might or could do if personally present thereat. The shares represented by this Proxy shall be voted in the manner set forth below. 1. To elect the following directors to serve until the 2000 Annual Meeting of Stockholders or until their respective successors are elected and qualified: [_] FOR ALL [_] WITHHOLD AUTHORITY FOR ALL Deepak Chopra, Ajay Mehra, Steven C. Good, Meyer Luskin, Madan G. Syal To withhold authority to vote for any individual nominee, write the nominee's name in the space provided below: ----------------------------------------------------------------------------- 2. To ratify the Board of Director's selection of Deloitte & Touche LLP to serve as the Company's independent accountants for the fiscal year ending June 30, 2000. [_] FOR [_] AGAINST [_] ABSTAIN 3. To transact such other business as may properly come before the meeting or any adjournment or postponement thereof. (PLEASE DATE AND SIGN ON REVERSE SIDE)

This Proxy, when properly executed, will be voted in the manner directed herein. This Proxy will be voted FOR the election of the directors listed and FOR the other proposals if no specification is made. Please sign exactly as your name(s) is (are) shown on the stock certificate to which the Proxy applies. When shares are held by joint tenants, both should sign. When signing as an attorney, executor, administrator, trustee or guardian, please give full title, as such. If a corporation, please sign in full corporate name by the President or other authorized officer. If a partnership, please sign in the partnership's name by an authorized person. Dated: __________, 1999 ----------------------- Signature ----------------------- Signature if held jointly Please mark, sign date and return the proxy card promptly using the enclosed envelope.