William J. Post is Director at FIRST SOLAR, INC. (FSLR). They have made 5 open-market trades across 2 companies since 2006, most recently 2026-06-30.
CIK 0001027958
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 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| FSLR | SELL | 2023-05-16 | 2023-05-17 | $218.52 | $2.2M | -2.8% | -9.3% | -4.1% |
| PNW | SELL | 2009-12-14 | 2009-12-16 | $37.72 | $3.0M | -0.7% | -0.4% | -0.4% |
| PNW | SELL | 2009-09-14 | 2009-09-16 | $32.61 | $724K | -0.7% | -0.4% | -0.4% |
| PNW | SELL | 2007-11-13 | 2007-11-15 | $41.73 | $672K | -0.7% | -0.4% | -0.4% |
| PNW | SELL | 2006-07-25 | 2006-07-27 | $43.65 | $635K | -0.7% | -0.4% | -0.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.