Widmar Mark R
Chief Executive Officer
In the last 12 months, Widmar Mark R filed 90 SEC Form 4 transactions across 2 issuers — $0 in open-market purchases and $14.6M in open-market sales. 42% of these transactions were executed under a pre-scheduled Rule 10b5-1 trading plan.
- $0Open-market buys (1y)
- $14.6MOpen-market sells (1y)
- 90Transactions filed
- 2Distinct issuers
- 42%Under Rule 10b5-1
- 2026-07-01Latest filing
Issuers Filed For By open-market buy volume
Recent Form 4 Filings Most recent 75 of 90 (1-year window)
| Date | Ticker | Company | Type | SEC Code | Value | Shares | Price |
|---|---|---|---|---|---|---|---|
| 2026-07-01 | ALB | ALBEMARLE CORP | Grant | A | $0 | 1,250 | $0.0 |
| 2026-05-26 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $96.5K | 364 | $265.1 |
| 2026-05-26 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $329.8K | 1,237 | $266.6 |
| 2026-05-26 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $168.1K | 628 | $267.7 |
| 2026-05-26 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $271.3K | 1,009 | $268.9 |
| 2026-05-26 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $170.7K | 632 | $270.1 |
| 2026-05-26 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $196.9K | 726 | $271.2 |
| 2026-05-26 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $129.2K | 473 | $273.2 |
| 2026-05-26 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $34.8K | 126 | $276.3 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $59.8K | 239 | $250.0 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $43.3K | 172 | $251.5 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $24.5K | 97 | $252.9 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $55.3K | 218 | $253.6 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $233.5K | 916 | $254.9 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $16.4K | 64 | $255.6 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $19.2K | 75 | $256.3 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $38.4K | 149 | $257.6 |
| 2026-05-22 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $12.1K | 47 | $258.5 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $161.3K | 672 | $240.1 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $87.4K | 362 | $241.4 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $33.3K | 136 | $244.6 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $56.4K | 229 | $246.2 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $24.3K | 98 | $247.5 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $44.5K | 179 | $248.8 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $282.4K | 1,131 | $249.7 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $118.3K | 472 | $250.6 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $143.2K | 569 | $251.6 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $66.4K | 261 | $254.3 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $45.7K | 179 | $255.3 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $1.5K | 6 | $257.0 |
| 2026-05-21 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $126.7K | 521 | $243.2 |
| 2026-05-13 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $312.0K | 1,300 | $240.0 |
| 2026-05-11 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $345.3K | 1,500 | $230.2 |
| 2026-05-11 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $237.5K | 1,026 | $231.5 |
| 2026-05-11 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $526.0K | 2,262 | $232.6 |
| 2026-05-11 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $438.4K | 1,877 | $233.6 |
| 2026-05-11 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $351.8K | 1,498 | $234.8 |
| 2026-05-11 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $321.2K | 1,363 | $235.7 |
| 2026-05-11 | FSLR | FIRST SOLAR, INC. | Sell 10b5-1 | S | $94.6K | 400 | $236.5 |
| 2026-05-05 | FSLR | FIRST SOLAR, INC. | Sell | S | $329.1K | 1,526 | $215.6 |
| 2026-05-04 | FSLR | FIRST SOLAR, INC. | Exercise | M | $0 | 3,802 | $0.0 |
| 2026-05-04 | FSLR | FIRST SOLAR, INC. | Exercise | M | $0 | 3,802 | $0.0 |
| 2026-03-16 | FSLR | FIRST SOLAR, INC. | Sell | — | $388.9K | 1,937 | $200.8 |
| 2026-03-13 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 4,856 | $0.0 |
| 2026-03-13 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 4,856 | $0.0 |
| 2026-03-09 | FSLR | FIRST SOLAR, INC. | Sell | — | $394.4K | 2,072 | $190.4 |
| 2026-03-09 | FSLR | FIRST SOLAR, INC. | Sell | — | $91.4K | 480 | $190.4 |
| 2026-03-09 | FSLR | FIRST SOLAR, INC. | Sell | — | $244.0K | 1,282 | $190.4 |
| 2026-03-09 | FSLR | FIRST SOLAR, INC. | Sell | — | $324.2K | 1,703 | $190.4 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 5,101 | $0.0 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 1,178 | $0.0 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 3,156 | $0.0 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 4,194 | $0.0 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 5,101 | $0.0 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 1,178 | $0.0 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 3,156 | $0.0 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 4,194 | $0.0 |
| 2026-03-06 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 12,685 | $0.0 |
| 2026-03-03 | FSLR | FIRST SOLAR, INC. | Sell | — | $1.5M | 7,738 | $195.9 |
| 2026-02-27 | FSLR | FIRST SOLAR, INC. | Grant | — | $0 | 17,664 | $0.0 |
| 2026-02-26 | ALB | ALBEMARLE CORP | Grant | — | $0 | 325 | $0.0 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $8.7K | 47 | $185.2 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $1.7K | 9 | $186.5 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $28.9K | 152 | $190.0 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $36.7K | 192 | $191.3 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $5.8K | 30 | $192.3 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $6.4K | 33 | $192.8 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $4.7K | 24 | $194.3 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $34.9K | 179 | $195.2 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $7.1K | 36 | $196.6 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $16.4K | 83 | $197.8 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $11.5K | 58 | $198.7 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $32.0K | 160 | $199.8 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $5.6K | 28 | $200.9 |
| 2025-08-15 | FSLR | FIRST SOLAR, INC. | Sell | — | $30.7K | 152 | $202.1 |
Showing the most recent 75 of 90 transactions.
Methodology & FAQ
How These Filings Are Sourced
All transactions on this page are sourced directly from SEC EDGAR. A complete description of the open-market vs grant distinction, the Rule 10b5-1 plan-reference heuristic, and the per-insider name matching is documented in the Methodology.
What companies does Widmar Mark R file Form 4 disclosures for?
Widmar Mark R has filed SEC Form 4 transactions for 2 issuers in the last 12 months: FIRST SOLAR, INC. (FSLR), ALBEMARLE CORP (ALB).
What does the 10b5-1 badge mean on these transactions?
Rule 10b5-1 is an SEC rule that lets insiders schedule trades in advance under a written plan, providing an affirmative defense against insider-trading allegations as long as the plan was adopted in good faith and not while in possession of material non-public information. Of Widmar Mark R's 90 reported transactions in the last 12 months, 38 (42%) reference a 10b5-1 trading plan in the Form 4 footnotes.
Are these all the transactions Widmar Mark R has executed?
This page shows SEC Form 4 transactions on record in Pactolio's tracked universe for the last 12 months. Form 4 only covers transactions in registered classes of equity at issuers where the person qualifies as an insider (officer, director, or 10% beneficial owner). Trades in funds, foreign issuers, or non-insider positions are not disclosed under Form 4 and are not included here.