Nathan B. Theurer is CAO & VP +1 at FIRST SOLAR, INC. (FSLR). They have made 6 open-market trades across 1 company since 2025, most recently 2026-05-06.
CIK 0002052277
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 | Shares | Value |
|---|---|---|
| FSLR | 31 | $5K |
Shares reported on the most recent Form 4, priced at the 2026-05-05 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| FSLR | SELL · 10b5-1 | 2026-05-06 | 2026-05-08 | $218.16 | $7K | +7.2% | +24.1% | +10.0% |
| FSLR | SELL | 2026-05-05 | 2026-05-05 | $215.63 | $3K | +6.8% | +44.2% | +6.6% |
| FSLR | SELL · 10b5-1 | 2026-03-16 | 2026-03-17 | $199.87 | $26K | -4.3% | -3.6% | +37.6% |
| FSLR | SELL | 2026-03-10 | 2026-03-11 | $195.70 | $63K | -4.9% | +1.9% | +31.3% |
| FSLR | SELL | 2026-03-09 | 2026-03-10 | $190.36 | $30K | -2.1% | +0.1% | +39.8% |
| FSLR | SELL · 10b5-1 | 2026-03-04 | 2026-03-05 | $196.95 | $18K | +6.1% | +3.5% | +68.5% |
| FSLR | SELL | 2026-03-03 | 2026-03-03 | $195.93 | $10K | -0.4% | -0.8% | +53.9% |
| FSLR | SELL · 10b5-1 | 2025-08-14 | 2025-08-18 | $182.03 | $250K | -8.5% | -2.1% | +17.7% |
| FSLR | SELL | 2025-03-17 | 2025-03-18 | $133.75 | $5K | -0.4% | +0.1% | +37.0% |
| FSLR | SELL | 2025-03-07 | 2025-03-10 | $132.96 | $4K | -5.0% | -4.2% | +18.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.