David Goeckeler is CEO & Chairman at Sandisk Corp (SNDK). They have made 6 open-market trades across 1 company since 2018, most recently 2026-09-17.
CIK 0001713941
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 | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SNDK | SELL · 10b5-1 | 2026-09-17 | 2026-09-21 | $1574.21 | $53.3M | +0.8% | -22.3% | — |
| SNDK | SELL · 10b5-1 | 2026-09-14 | 2026-09-16 | $1527.87 | $51.7M | +9.4% | -17.0% | — |
| WDC | SELL · 10b5-1 | 2024-10-25 | 2024-10-28 | $72.59 | $5.4M | +0.8% | +2.3% | -7.8% |
| WDC | SELL · 10b5-1 | 2024-09-26 | 2024-09-27 | $70.32 | $10.5M | -6.4% | +1.2% | -10.4% |
| CSCO | SELL | 2020-02-18 | 2020-02-20 | $46.70 | $1.9M | -14.3% | -26.0% | -2.8% |
| CSCO | SELL | 2019-09-20 | 2019-09-20 | $49.22 | $3.4M | -6.2% | -4.6% | -3.6% |
| CSCO | SELL | 2019-03-12 | 2019-03-14 | $52.07 | $1.6M | +0.5% | +6.8% | +5.5% |
| CSCO | SELL | 2018-09-20 | 2018-09-20 | $47.57 | $6.0M | +2.3% | -4.5% | -10.0% |
| CSCO | SELL | 2018-06-22 | 2018-06-25 | $43.27 | $1.5M | +0.5% | +1.6% | +14.0% |
| CSCO | SELL | 2018-03-15 | 2018-03-16 | $45.50 | $1.9M | -6.6% | -2.9% | +0.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.