| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | OSI SYSTEMS INC | 1,530,071 | 8.0% | EDGAR |
| SC 13G | 2017-02-09 | DIMENSIONAL FUND ADVISORS LP | OSI SYSTEMS INC | 1,032,259 | 5.4% | EDGAR |
| SC 13G/A | 2017-01-17 | BlackRock Inc. | OSI SYSTEMS INC | 2,076,799 | 10.9% | EDGAR |
| SC 13G/A | 2017-01-10 | EARNEST PARTNERS LLC | OSI SYSTEMS INC | 959,780 | 5.0% | EDGAR |
| SC 13G/A | 2016-02-16 | JANUS CAPITAL MANAGEMENT LLC | OSI SYSTEMS INC | 1,506,769 | 7.6% | EDGAR |
| SC 13G/A | 2016-02-11 | VANGUARD GROUP INC | OSI SYSTEMS INC | 1,401,231 | 7.1% | EDGAR |
| SC 13G | 2016-02-11 | EARNEST PARTNERS LLC | OSI SYSTEMS INC | 1,130,973 | 5.7% | EDGAR |
| SC 13G/A | 2016-01-08 | BlackRock Inc. | OSI SYSTEMS INC | 2,157,235 | 10.9% | EDGAR |
| SC 13G/A | 2015-12-09 | WELLS FARGO & COMPANY/MN | OSI SYSTEMS INC | 898,953 | 4.6% | EDGAR |
| SC 13G | 2015-02-18 | JANUS CAPITAL MANAGEMENT LLC | OSI SYSTEMS INC | 1,432,571 | 7.2% | EDGAR |
| SC 13G/A | 2015-02-17 | TREMBLANT CAPITAL GROUP | OSI SYSTEMS INC | 738,242 | 3.7% | EDGAR |
| SC 13G/A | 2015-02-11 | VANGUARD GROUP INC | OSI SYSTEMS INC | 1,287,096 | 6.5% | EDGAR |
| SC 13G/A | 2015-02-05 | WELLS FARGO & COMPANY/MN | OSI SYSTEMS INC | 1,525,352 | 7.7% | EDGAR |
| SC 13G/A | 2015-01-09 | BlackRock Inc. | OSI SYSTEMS INC | 2,216,048 | 11.2% | EDGAR |
| SC 13G | 2014-02-14 | TREMBLANT CAPITAL GROUP | OSI SYSTEMS INC | 1,364,932 | 6.8% | EDGAR |
| SC 13G/A | 2014-02-12 | VANGUARD GROUP INC | OSI SYSTEMS INC | 1,240,547 | 6.2% | EDGAR |
| SC 13G/A | 2014-01-28 | WELLS FARGO & COMPANY/MN | OSI SYSTEMS INC | 1,676,914 | 8.4% | EDGAR |
| SC 13G/A | 2014-01-10 | BlackRock Inc. | OSI SYSTEMS INC | 2,521,422 | 12.6% | EDGAR |
| SC 13G/A | 2013-11-07 | BlackRock Inc. | OSI SYSTEMS INC | 2,015,052 | 10.0% | EDGAR |
| SC 13G/A | 2013-03-29 | WELLS FARGO & COMPANY/MN | OSI SYSTEMS INC | 1,648,415 | 8.2% | EDGAR |