Company: OSIS
Filing Date: 2025-10-22
Form Type: DEF 14A
Source: 0001104659-25-101517
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Company: OSI SYSTEMS INC
Filing Date: 2025-10-22
Form: DEF 14A
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 We challenge each other to be efficient and productive.         
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| ​ |     | ​ | ​ | At OSI, we recognize the vital role we play in shaping solutions that make environments safer and healthier for everyone. We’re driven by a commitment to innovation that delivers real-world benefits across the globe. Turning bold ideas into practical outcomes is what motivates us every day, and I’m honored to guide that mission.” 
 —Ajay MehraCEO and President, OSI Systems, Inc.                                                                                                                                                                                                                                                                                             | ​ | ​ |     | ​ |

TABLE OF CONTENTS

12525 Chadron Avenue
Hawthorne, California 90250 Notice of Annual Meeting of Stockholders DEAR STOCKHOLDER, You are cordially invited to attend the Annual Meeting of Stockholders of OSI Systems, Inc.

| MEETING                                                                                                                                  
 INFORMATION​                                                                                                                             
 LOGISTICS                                                                                                                                
 DATE & TIME                                                                                                                              
 Thursday, December 11, 202510:00 a.m., Pacific Time                                                                                      
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 ​ |                                                                                                                                                ITEMS OF 
                                                                                                                                               BUSINESS​ 
                                                                                                                                                  AGENDA 
                                                                                                                                                       1 
 To ratify the appointment of Grant Thornton LLP as the Company’s independent registered public accounting firm for the fiscal year ending June 30, 2026 | ​ 
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 ​ | To elect six directors to hold office for a one-year term and until their respective successors are elected and qualified        | ​ 
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 ​ | BOARD          
 RECOMMENDATION 
 FOR​           | ​ 
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 ​ | FORallnominees 
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 ​ | SEE PAGE 
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| ​                                                                                                                                        | ​                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | ​ | ​ |                                                                                                                                                       3 | ​ | ​ | To conduct an advisory vote to approve the Company’s named executive officer