Gerald M. Chizever is Director at OSI SYSTEMS INC (OSIS). They have made 6 open-market trades across 1 company since 2023, most recently 2026-08-20.
CIK 0001134261
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| OSIS | 2,696 | $526K |
Shares reported on the most recent Form 4, priced at the 2026-08-21 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| OSIS | SELL | 2025-01-27 | 2025-01-27 | $195.83 | $1.1M | +5.5% | +3.6% | +3.2% |
| OSIS | SELL | 2024-11-07 | 2024-11-12 | $148.16 | $296K | +6.8% | +21.6% | +33.7% |
| OSIS | SELL | 2024-09-11 | 2024-09-13 | $138.41 | $415K | -0.1% | +3.1% | +29.5% |
| OSIS | SELL | 2024-05-08 | 2024-05-09 | $134.11 | $805K | +6.6% | +1.5% | +0.7% |
| OSIS | SELL | 2023-06-01 | 2023-06-02 | $118.59 | $178K | +2.8% | -2.0% | +13.2% |
| OSIS | SELL | 2023-05-17 | 2023-05-22 | $117.04 | $176K | +3.7% | +4.6% | +0.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.