Ronald Bisio is President & VP at TRIMBLE INC. (TRMB). They have made 12 open-market trades across 1 company since 2019, most recently 2026-04-15.
CIK 0001768643
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 12 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TRMB | 105,317 | $6.3M |
Shares reported on the most recent Form 4, priced at the 2026-04-17 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TRMB | SELL · 10b5-1 | 2025-11-26 | 2025-12-01 | $80.87 | $202K | +1.7% | -4.4% | -16.5% |
| TRMB | SELL · 10b5-1 | 2025-08-27 | 2025-08-28 | $81.55 | $204K | -2.4% | -0.3% | -1.1% |
| TRMB | SELL · 10b5-1 | 2025-06-26 | 2025-06-30 | $75.00 | $188K | +6.0% | +12.8% | +8.6% |
| TRMB | SELL | 2025-06-16 | 2025-06-18 | $72.75 | $109K | +6.1% | +13.9% | +12.3% |
| TRMB | SELL | 2023-11-03 | 2023-11-07 | $43.24 | $164K | +2.1% | +10.1% | +21.6% |
| TRMB | SELL | 2022-03-11 | 2022-03-15 | $65.98 | $351K | +6.3% | +0.2% | -11.9% |
| TRMB | SELL | 2021-08-23 | 2021-08-25 | $92.28 | $323K | +0.6% | -6.7% | -8.7% |
| TRMB | SELL | 2021-06-01 | 2021-06-03 | $80.40 | $558K | +0.1% | +5.9% | +20.0% |
| TRMB | SELL | 2021-03-01 | 2021-03-03 | $76.49 | $543K | +2.8% | +14.1% | +6.9% |
| TRMB | SELL | 2020-11-10 | 2020-11-12 | $57.94 | $174K | +5.1% | +12.1% | +28.4% |
| TRMB | SELL | 2020-08-13 | 2020-08-17 | $50.10 | $400K | +2.0% | +0.6% | +14.9% |
| TRMB | SELL | 2020-02-14 | 2020-02-19 | $45.51 | $501K | -10.0% | -42.9% | -13.9% |
| TRMB | SELL | 2019-09-06 | 2019-09-10 | $38.13 | $288K | +0.2% | -2.7% | +5.5% |
| TRMB | SELL | 2019-06-07 | 2019-06-11 | $42.41 | $509K | +1.1% | +2.3% | -10.9% |
| TRMB | SELL | 2019-03-01 | 2019-03-04 | $40.50 | $393K | -1.3% | +1.3% | -0.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.