William G. Bock is Director at SILICON LABORATORIES INC. (SLAB). They have made 44 open-market trades across 3 companies since 2006, most recently 2026-06-04.
CIK 0001197848
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 44 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SLAB | SELL · 10b5-1 | 2025-02-18 | 2025-02-18 | $149.43 | $149K | -8.5% | -18.6% | -16.6% |
| SLAB | SELL · 10b5-1 | 2025-01-22 | 2025-01-22 | $140.77 | $282K | -1.8% | +13.2% | -31.3% |
| SWI | SELL | 2024-11-05 | 2024-11-07 | $13.13 | $210K | -4.1% | +5.6% | +11.6% |
| SLAB | SELL | 2022-08-15 | 2022-08-15 | $146.70 | $147K | -5.9% | -11.2% | -4.7% |
| SLAB | SELL | 2022-05-16 | 2022-05-16 | $141.45 | $141K | +4.0% | -0.9% | +3.2% |
| SLAB | SELL | 2022-02-15 | 2022-02-16 | $155.31 | $155K | -5.8% | -1.5% | -9.9% |
| SAIL | SELL | 2022-02-15 | 2022-02-16 | $40.23 | $201K | +11.2% | +15.5% | +55.5% |
| SLAB | SELL | 2021-12-06 | 2021-12-07 | $190.69 | $191K | -1.4% | -1.7% | -30.9% |
| SAIL | SELL | 2021-11-15 | 2021-11-17 | $59.64 | $149K | -9.1% | -19.6% | -28.5% |
| SLAB | SELL | 2021-08-16 | 2021-08-17 | $157.67 | $158K | +3.1% | -5.6% | +33.3% |
| SAIL | SELL | 2021-08-16 | 2021-08-18 | $43.61 | $109K | +10.4% | +8.8% | +35.4% |
| SAIL | SELL | 2021-06-14 | 2021-06-15 | $47.10 | $118K | +12.7% | +0.7% | +2.6% |
| SLAB | SELL | 2021-05-17 | 2021-05-18 | $123.29 | $123K | +13.7% | +18.4% | +31.3% |
| SAIL | SELL | 2021-02-16 | 2021-02-18 | $62.55 | $250K | -5.9% | -13.8% | -30.2% |
| SLAB | SELL | 2021-02-16 | 2021-02-17 | $153.19 | $153K | +8.7% | -3.7% | -16.7% |
| SAIL | SELL | 2020-11-16 | 2020-11-16 | $42.51 | $170K | +6.2% | +23.9% | +45.6% |
| SLAB | SELL | 2020-11-16 | 2020-11-17 | $113.43 | $113K | +4.6% | +13.1% | +37.3% |
| SAIL | SELL | 2020-08-17 | 2020-08-18 | $36.25 | $145K | +5.3% | +1.5% | +14.7% |
| SAIL | SELL | 2020-07-13 | 2020-07-15 | $28.86 | $115K | +6.7% | +24.6% | +63.3% |
| SLAB | SELL | 2020-05-18 | 2020-05-19 | $95.00 | $190K | -4.9% | +2.0% | +5.3% |
| SAIL | SELL | 2020-02-18 | 2020-02-20 | $24.93 | $100K | -4.8% | -38.3% | -10.4% |
| SLAB | SELL | 2020-02-18 | 2020-02-19 | $102.61 | $103K | -12.3% | -33.1% | -8.8% |
| SAIL | SELL | 2019-11-15 | 2019-11-18 | $23.43 | $94K | +2.2% | -3.4% | +2.9% |
| SLAB | SELL | 2019-11-15 | 2019-11-15 | $109.84 | $110K | -0.4% | +4.9% | -4.4% |
| SAIL | SELL | 2019-08-15 | 2019-08-21 | $21.21 | $85K | -0.9% | -7.1% | +11.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.