Updated Jul 16, 2026 · Last SEC filing 2026-07-01
FIRST SOLAR, INC. (FSLR) has filed 30 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-01. 1 Form 8-K material event filings were reported by FSLR in the last 90 days. 24 Form 144 notices of proposed sale were filed for FSLR stock. InsiderAlpha tracks every FSLR SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Semiconductors & Related Devices (SIC 3674) |
|---|---|
| SEC CIK | 0001274494 |
| Form 4 filings (90d) | 30 |
|---|---|
| Form 8-K filings (90d) | 1 |
| Form 144 notices (90d) | 24 |
| Latest Form 4 filing | 2026-07-01 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| RENDUCHINTALA VENKATA S M | Director | A — Grant or award | 223 | $0.00 | — | SEC | |
| MORGAN CURTIS A | Director | A — Grant or award | 223 | $0.00 | — | SEC | |
| George Anita M. | Director | A — Grant or award | 223 | $0.00 | — | SEC | |
| Wright Norman L. | Director | A — Grant or award | 223 | $0.00 | — | SEC | |
| KRO LISA A | Director | A — Grant or award | 223 | $0.00 | — | SEC | |
| POST WILLIAM J | Director | A — Grant or award | 223 | $0.00 | — | SEC | |
| Sweeney Michael T | Director | A — Grant or award | 223 | $0.00 | — | SEC | |
| Ahearn Michael J | Director | A — Grant or award | 313 | $0.00 | — | SEC | |
| STEBBINS PAUL H | Director | A — Grant or award | 223 | $0.00 | — | SEC | |
| George Anita M. | Director | F — Tax withholding / forfeiture | 67 | $235.96 | $16K | SEC | |
| Buehler Patrick James | Chief Product Officer | S — Open-market sale | 3.0K | $302.00 | $906K | SEC | |
| Stockdale Caroline | Chief People and Comm. Officer | S — Open-market sale | 10.6K | $275.60 | $2.93M | SEC | |
| Widmar Mark R | Chief Executive Officer | S — Open-market sale | 628 | $267.72 | $168K | SEC | |
| Widmar Mark R | Chief Executive Officer | S — Open-market sale | 1.2K | $266.60 | $330K | SEC | |
| Widmar Mark R | Chief Executive Officer | S — Open-market sale | 1.0K | $268.89 | $271K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for FIRST SOLAR, INC. (FSLR). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Widmar Mark R | 41 | $6.05M |
| Verma Kuntal Kumar | 8 | $1.16M |
| Theurer Nathan B. | 4 | $10K |
| Buehler Patrick James | 4 | $957K |
| Dymbort Jason E. | 4 | $138K |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in FSLR insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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