Michael Koralewski is Chief Supply Chain Officer at FIRST SOLAR, INC. (FSLR). They have made 12 open-market trades across 1 company since 2021, most recently 2026-08-03.
CIK 0001819693
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 |
|---|---|---|
| FSLR | 7,642 | $1.3M |
Shares reported on the most recent Form 4, priced at the 2026-08-05 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 | 2026-08-03 | 2026-08-05 | $221.51 | $1.6M | -7.9% | -13.6% | — |
| FSLR | SELL | 2026-05-05 | 2026-05-05 | $215.63 | $46K | +6.8% | +44.2% | +6.6% |
| FSLR | SELL | 2026-03-16 | 2026-03-17 | $200.80 | $53K | -4.3% | -3.6% | +37.6% |
| FSLR | SELL | 2026-03-09 | 2026-03-10 | $190.36 | $144K | -2.1% | +0.1% | +39.8% |
| FSLR | SELL | 2026-03-03 | 2026-03-03 | $195.93 | $261K | -0.4% | -0.8% | +53.9% |
| FSLR | SELL · 10b5-1 | 2025-06-02 | 2025-06-03 | $158.21 | $934K | +9.6% | +15.7% | +22.4% |
| FSLR | SELL | 2025-03-17 | 2025-03-18 | $133.75 | $37K | -0.4% | +0.1% | +37.0% |
| FSLR | SELL | 2025-03-07 | 2025-03-10 | $132.96 | $25K | -5.0% | -4.2% | +18.4% |
| FSLR | SELL · 10b5-1 | 2024-05-30 | 2024-05-31 | $272.92 | $2.5M | +10.0% | -18.5% | -18.4% |
| FSLR | SELL | 2022-07-29 | 2022-08-01 | $100.00 | $101K | +16.9% | +30.1% | +48.5% |
| FSLR | SELL | 2022-07-01 | 2022-07-05 | $67.58 | $246K | -1.5% | +49.7% | +106.2% |
| FSLR | SELL | 2022-03-03 | 2022-03-04 | $68.67 | $308K | +5.1% | +13.8% | +0.6% |
| FSLR | SELL | 2021-03-09 | 2021-03-11 | $75.00 | $146K | +1.8% | -0.4% | -2.9% |
| FSLR | SELL | 2021-03-08 | 2021-03-09 | $73.57 | $268K | +2.3% | +3.9% | -4.0% |
| FSLR | SELL | 2021-03-01 | 2021-03-02 | $82.48 | $223K | -1.7% | +3.4% | -7.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.