Insider · CIK 0001819693
Michael Koralewski
Files at FSLR (FIRST SOLAR, INC.). First filing Mar 10, 2025, latest Aug 5, 2026.
In brief
Michael Koralewski files SEC Form 4 as officer at FSLR (FIRST SOLAR, INC.). Since Mar 10, 2025, Michael Koralewski has reported 0 open-market buys worth $0 and 8 open-market sells worth $2.6M, the latest filed on Aug 5, 2026.
A track record needs three past buys with six months of prices behind them; Michael Koralewski has 0, so none is measured yet.
The newest scored trade: sold $1.6M of FSLR on Aug 3, 2026, filed Aug 5, 2026, scored 45 (moderate), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 5 sells worth $2.1M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
FSLR: FIRST SOLAR, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 45Moderate | FIRST SOLAR, INC. | $1.6M 7,000 shares | -48% | +29% from low-27% from high | |
| 21Weak | FIRST SOLAR, INC. | $46k 215 shares | -1% | +73% from low-23% from high | |
| 22Weak | FIRST SOLAR, INC. | $53k 264 shares | -2% | +66% from low-30% from high | |
| 26Weak | FIRST SOLAR, INC. | $144k 756 shares | -5% | +62% from low-31% from high | |
| 43Moderate | FIRST SOLAR, INC. | $261k 1,330 shares | -9% | +64% from low-31% from high | |
| 32Weak | FIRST SOLAR, INC. | $467k 2,951 shares | -21% | +24% from low-41% from high | |
| 21Weak | FIRST SOLAR, INC. | $37k 273 shares | -2% | - | |
| 15Weak | FIRST SOLAR, INC. | $25k 188 shares | -1% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Aug 3, 2026 | FSLR FIRST SOLAR, INC. | 7,000 0.01% of outstanding | $1.6M | Aug 3, 2026 | $46k |
| May 5, 2026 | FSLR FIRST SOLAR, INC. | 215 0.00% of outstanding | $46k | May 5, 2026 | $458k |
| Mar 16, 2026 | FSLR FIRST SOLAR, INC. | 264 0.00% of outstanding | $53k | Mar 16, 2026 | $405k |
| Mar 9, 2026 | FSLR FIRST SOLAR, INC. | 756 0.00% of outstanding | $144k | Mar 9, 2026 | $261k |
| Mar 2, 2026 | FSLR FIRST SOLAR, INC. | 2,826 0.00% of outstanding | $554k | Mar 2, 2026 | none |
| Jun 2, 2025 | FSLR FIRST SOLAR, INC. | 2,951 0.00% of outstanding | $467k | Jun 2, 2025 | $62k |
| Mar 17, 2025 | FSLR FIRST SOLAR, INC. | 273 0.00% of outstanding | $37k | Mar 17, 2025 | $25k |
| Mar 7, 2025 | FSLR FIRST SOLAR, INC. | 188 0.00% of outstanding | $25k | Mar 7, 2025 | none |
Transactions
Every row this insider has filed, 40 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 3, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock10b5-1 | -3,500 | $218.02 | $763k | 11,142 | Aug 5, 2026 |
| Aug 3, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock10b5-1 | -3,500 | $225.00 | $788k | 7,642 | Aug 5, 2026 |
| May 4, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +518 | $0.00 | $0 | 14,857 | May 5, 2026 |
| May 5, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -215 | $215.63 | $46k | 14,642 | May 5, 2026 |
| May 4, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -518 | $0.00 | $0 | 1,556 | May 5, 2026 |
| Mar 13, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +640 | $0.00 | $0 | 14,603 | Mar 17, 2026 |
| Mar 16, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -264 | $200.80 | $53k | 14,339 | Mar 17, 2026 |
| Mar 13, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -640 | $0.00 | $0 | 640 | Mar 17, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +651 | $0.00 | $0 | 13,516 | Mar 10, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +189 | $0.00 | $0 | 13,705 | Mar 10, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +442 | $0.00 | $0 | 14,147 | Mar 10, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +572 | $0.00 | $0 | 14,719 | Mar 10, 2026 |
| Mar 9, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -265 | $190.36 | $50k | 14,454 | Mar 10, 2026 |
| Mar 9, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -78 | $190.36 | $15k | 14,376 | Mar 10, 2026 |
| Mar 9, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -180 | $190.36 | $34k | 14,196 | Mar 10, 2026 |
| Mar 9, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -233 | $190.36 | $44k | 13,963 | Mar 10, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -651 | $0.00 | $0 | 0 | Mar 10, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -189 | $0.00 | $0 | 376 | Mar 10, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -442 | $0.00 | $0 | 884 | Mar 10, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -572 | $0.00 | $0 | 1,716 | Mar 10, 2026 |
| Mar 6, 2026 | FSLR FIRST SOLAR, INC. | AGrant or award Restricted Stock Unitsderivative | +1,903 | $0.00 | $0 | 1,903 | Mar 10, 2026 |
| Feb 27, 2026 | FSLR FIRST SOLAR, INC. | AGrant or award Common Stock | +2,826 | $0.00 | $0 | 14,195 | Mar 3, 2026 |
| Mar 3, 2026 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -1,330 | $195.93 | $261k | 12,865 | Mar 3, 2026 |
| Jun 2, 2025 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock10b5-1 | -2,951 | $158.21 | $467k | 11,369 | Jun 3, 2025 |
| May 1, 2025 | FSLR FIRST SOLAR, INC. | AGrant or award Restricted Stock Unitsderivative | +2,074 | $0.00 | $0 | 2,074 | May 2, 2025 |
| Mar 14, 2025 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +640 | $0.00 | $0 | 14,593 | Mar 18, 2025 |
| Mar 17, 2025 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -273 | $133.75 | $37k | 14,320 | Mar 18, 2025 |
| Mar 14, 2025 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -640 | $0.00 | $0 | 1,280 | Mar 18, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +651 | $0.00 | $0 | 13,870 | Mar 10, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | FTax withholding Common Stock | -279 | $131.13 | $37k | 13,591 | Mar 10, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +189 | $0.00 | $0 | 13,780 | Mar 10, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | FTax withholding Common Stock | -81 | $131.13 | $11k | 13,699 | Mar 10, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | MOption exercise Common Stock | +442 | $0.00 | $0 | 14,141 | Mar 10, 2025 |
| Mar 7, 2025 | FSLR FIRST SOLAR, INC. | SOpen-market sale Common Stock | -188 | $132.96 | $25k | 13,953 | Mar 10, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -651 | $0.00 | $0 | 651 | Mar 10, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -189 | $0.00 | $0 | 565 | Mar 10, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | MOption exercise Restricted Stock Unitsderivative | -442 | $0.00 | $0 | 1,326 | Mar 10, 2025 |
| Mar 6, 2025 | FSLR FIRST SOLAR, INC. | AGrant or award Restricted Stock Unitsderivative | +2,288 | $0.00 | $0 | 2,288 | Mar 10, 2025 |
| Feb 26, 2025 | FSLR FIRST SOLAR, INC. | AGrant or award Common Stock | +9,604 | $0.00 | $0 | 17,370 | Feb 28, 2025 |
| Feb 26, 2025 | FSLR FIRST SOLAR, INC. | FTax withholding Common Stock | -4,151 | $156.84 | $651k | 13,219 | Feb 28, 2025 |
Questions about Michael Koralewski
Answered from the filings on this page, as of the latest one.
Is Michael Koralewski buying or selling?
In the last 12 months Michael Koralewski reported 0 open-market buys worth $0 and 5 open-market sells worth $2.1M on SEC Form 4; the latest was sold $1.6M of FSLR on Aug 3, 2026. Grants, option exercises and tax withholding are not counted.
How did Michael Koralewski's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Michael Koralewski has 0.
Where does Michael Koralewski file Form 4?
Michael Koralewski has filed Form 4 at FSLR (FIRST SOLAR, INC.) as Chief Supply Chain Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.