144 0000898243 XXXXXXXX LIVE 0001039065 OSI SYSTEMS, INC. 000-23125 12525 Chadron Avenue Hawthorne CA 90250 310-978-0516 JAMES HAWKINS Director Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

2000 365248.60 16710749 12/10/2024 NASDAQ Common 07/08/2023 Restricted Stock Issuer N 713 07/08/2023 Not Applicable Common 07/06/2023 Restricted Stock Issuer N 345 07/06/2023 Not Applicable Common 12/11/2018 Restricted Stock Issuer N 206 12/11/2018 Not Applicable Common 08/03/2020 Restricted Stock Issuer N 315 08/03/2020 Not Applicable Common 07/03/2023 Restricted Stock Issuer N 421 07/03/2023 Not Applicable Y 12/10/2024 /s/ James B Hawkins