X0306 4 2020-07-08 0 0001039065 OSI SYSTEMS INC OSIS 0001047062 ALIABADI MANOOCHER M 12525 CHADRON AVE HAWTHORNE CA 90250 0 1 0 0 Pres., Optoelectronics Div Common Stock 2020-07-08 4 A 0 3942 0 A 79690 D Shares are restricted stock units issued to the Reporting Person pursuant to the OSI Systems, Inc. Amended and Restated 2012 Incentive Award Plan. Vesting and amount of shared is subject to achievement of performance targets. /s/ Manoocher Mansouri Aliabadi 2020-07-10