David Brian Miller is Director at ONTO INNOVATION INC. (ONTO). They have made 4 open-market trades across 2 companies since 2018, most recently 2026-09-29.
CIK 0001233488
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 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ONTO | SELL · 10b5-1 | 2026-09-29 | 2026-10-01 | $300.00 | $600K | -21.2% | — | — |
| ONTO | SELL | 2024-02-13 | 2024-02-13 | $170.49 | $477K | +5.3% | +2.1% | +29.3% |
| ONTO | SELL | 2023-05-23 | 2023-05-25 | $99.69 | $997K | +8.2% | +5.2% | +14.1% |
| ONTO | SELL | 2021-12-07 | 2021-12-09 | $97.41 | $536K | -2.0% | -3.5% | -15.9% |
| RTEC | SELL | 2018-05-09 | 2018-05-10 | $31.31 | $125K | +1.1% | -0.8% | -12.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.