CHIZEVER GERALD M (CIK 1134261) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-21). Recent activity: Sell OSIS (88 shares), Sell OSIS (141 shares), Sell OSIS (166 shares), Buy OSIS (924 shares), Sell OSIS (231 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-21 | OSI SYSTEMS INC (OSIS) | Director | Sell | 88 | $19,441 |
| 2026-08-17 | OSI SYSTEMS INC (OSIS) | Director | Sell | 141 | $32,227 |
| 2026-07-29 | OSI SYSTEMS INC (OSIS) | Director | Sell | 166 | $36,072 |
| 2026-07-21 | OSI SYSTEMS INC (OSIS) | Director | Buy | 924 | $200,185 |
| 2026-07-07 | OSI SYSTEMS INC (OSIS) | Director | Sell | 231 | $51,227 |
| 2025-08-22 | OSI SYSTEMS INC (OSIS) | Director | Buy | 873 | $195,019 |
Source: SEC Form 4 filings · as of 2026-08-21