FSLR insider buying and SEC filings, explained
First Solar, Inc. · CIK 1274494
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$13.0M
Planned sales (10b5-1)
$30.4M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 1, 2026 | Planned (10b5-1) | Markus Gloeckler (Chief Technology Officer) sold 800 shares at $174.00 ($139K), marked as a 10b5-1 plan trade. Holdings down 14% to 5,042 shares. | SEC filing Filed Oct 2, 2026, 5:48 PM ET |
| Sep 1, 2026 | Planned (10b5-1) | Markus Gloeckler (Chief Technology Officer) sold 800 shares at $200.00 ($160K), marked as a 10b5-1 plan trade. Holdings down 12% to 5,842 shares. | SEC filing Filed Sep 2, 2026 |
| Aug 17, 2026 | Sale | Samantha L. Sloan (EVP, Corporate Affairs) sold 127 shares at $222.95 ($28K). Holdings down 6% to 2,018 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 18, 2026 |
| Aug 11, 2026 | Planned (10b5-1) | Jason E. Dymbort (General Counsel and Secretary) sold 3,700 shares at $249.38 ($923K), marked as a 10b5-1 plan trade. Holdings down 40% to 5,624 shares. | SEC filing Filed Aug 12, 2026 |
| Aug 3–4, 2026 | Planned (10b5-1) | Markus Gloeckler (Chief Technology Officer) sold 4,254 shares between Aug 3 and Aug 4 at about $224.61 ($955K), marked as a 10b5-1 plan trade. Holdings down 39% to 6,642 shares. | SEC filing Filed Aug 5, 2026 |
| Aug 3, 2026 | Planned (10b5-1) | Michael Koralewski (Chief Supply Chain Officer) sold 7,000 shares at about $221.51 ($1.6M), marked as a 10b5-1 plan trade. Holdings down 48% to 7,642 shares. | SEC filing Filed Aug 5, 2026 |
| Jun 2, 2026 | Planned (10b5-1) | Patrick James Buehler (Chief Product Officer) sold 3,000 shares at $302.00 ($906K), marked as a 10b5-1 plan trade. Holdings down 41% to 4,406 shares. | SEC filing Filed Jun 3, 2026 |
| May 28, 2026 | Planned (10b5-1) | Caroline Stockdale (Chief People and Comm. Officer) sold 10,628 shares at $275.60 ($2.9M), marked as a 10b5-1 plan trade. Holdings down 31% to 23,792 shares. | SEC filing Filed Jun 1, 2026 |
| May 22–26, 2026 | Planned (10b5-1) | Mark R Widmar (CEO and Director) sold 7,172 shares between May 22 and May 26 at about $264.89 ($1.9M), marked as a 10b5-1 plan trade. Holdings down 8% to 81,861 shares. | SEC filing Filed May 27, 2026 |
| May 21, 2026 | Planned (10b5-1) | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 582 shares at $250.00 ($146K), marked as a 10b5-1 plan trade. Holdings down 10% to 4,967 shares. | SEC filing Filed May 22, 2026 |
| May 21, 2026 | Planned (10b5-1) | Mark R Widmar (CEO and Director) sold 4,815 shares at about $247.43 ($1.2M), marked as a 10b5-1 plan trade. Holdings down 5% to 89,033 shares. | SEC filing Filed May 22, 2026 |
| May 11–13, 2026 | Planned (10b5-1) | Mark R Widmar (CEO and Director) sold 11,226 shares between May 11 and May 13 at about $234.00 ($2.6M), marked as a 10b5-1 plan trade. Holdings down 11% to 93,848 shares. | SEC filing Filed May 13, 2026 |
| May 11–13, 2026 | Planned (10b5-1) | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 3,671 shares between May 11 and May 13 at about $231.42 ($850K), marked as a 10b5-1 plan trade. Holdings down 40% to 5,549 shares. | SEC filing Filed May 13, 2026 |
| May 6, 2026 | Planned (10b5-1) | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 270 shares at $218.16 ($59K), marked as a 10b5-1 plan trade. Holdings down 3% to 9,220 shares. | SEC filing Filed May 8, 2026 |
| May 6, 2026 | Planned (10b5-1) | Nathan B. Theurer (VP - Global Controller and CAO) sold 31 shares at $218.16 ($7K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed May 8, 2026 |
| May 6, 2026 | Planned (10b5-1) | Jason E. Dymbort (General Counsel and Secretary) sold 228 shares at $218.16 ($50K), marked as a 10b5-1 plan trade. Holdings down 2% to 9,324 shares. | SEC filing Filed May 8, 2026 |
| May 5, 2026 | Sale | Georges Antoun (Chief Commercial Officer) sold 566 shares at $215.63 ($122K). Holdings down 3% to 19,918 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Alexander R. Bradley (CFO) sold 498 shares at $215.63 ($107K). Holdings down 2% to 30,712 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Michael Koralewski (Chief Supply Chain Officer) sold 215 shares at $215.63 ($46K). Holdings down 1% to 14,642 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Patrick James Buehler (Chief Product Officer) sold 235 shares at $215.63 ($51K). Holdings down 3% to 7,406 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Jason E. Dymbort (General Counsel and Secretary) sold 409 shares at $215.63 ($88K). Holdings down 4% to 10,409 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Markus Gloeckler (Chief Technology Officer) sold 420 shares at $215.63 ($91K). Holdings down 4% to 10,896 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Samantha L. Sloan (EVP, Corporate Affairs) sold 19 shares at $215.63 ($4K). Holdings down 1% to 1,708 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Caroline Stockdale (Chief People and Comm. Officer) sold 262 shares at $215.63 ($56K). Holdings down 1% to 34,420 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Nathan B. Theurer (VP - Global Controller and CAO) sold 13 shares at $215.63 ($3K). Holdings down 30% to 31 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 479 shares at $215.63 ($103K). Holdings down 5% to 9,490 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 5, 2026 | Sale | Mark R Widmar (CEO and Director) sold 1,526 shares at $215.63 ($329K). Holdings down 1% to 105,074 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| Apr 15, 2026 | Planned (10b5-1) | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 573 shares at $210.00 ($120K), marked as a 10b5-1 plan trade. Holdings down 6% to 8,863 shares. | SEC filing Filed Apr 16, 2026 |
| Mar 16, 2026 | Sale | Mark R Widmar (CEO and Director) sold 1,937 shares at $200.80 ($389K). Holdings down 2% to 102,798 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 16–17, 2026 | Planned (10b5-1) | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 572 shares between Mar 16 and Mar 17 at about $200.40 ($115K), marked as a 10b5-1 plan trade. Holdings down 6% to 9,436 shares. | SEC filing Filed Mar 17, 2026 |
| Mar 16–17, 2026 | Planned (10b5-1) | Nathan B. Theurer (VP - Global Controller and CAO) sold 131 shares between Mar 16 and Mar 17 at about $199.87 ($26K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Mar 17, 2026 |
| Mar 16, 2026 | Sale | Caroline Stockdale (Chief People and Comm. Officer) sold 335 shares at $200.80 ($67K). Holdings down 1% to 34,060 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 16, 2026 | Sale | Samantha L. Sloan (EVP, Corporate Affairs) sold 120 shares at $200.80 ($24K). Holdings down 7% to 1,683 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 16, 2026 | Sale | Michael Koralewski (Chief Supply Chain Officer) sold 264 shares at $200.80 ($53K). Holdings down 2% to 14,339 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 16, 2026 | Sale | Markus Gloeckler (Chief Technology Officer) sold 368 shares at $200.80 ($74K). Holdings down 3% to 10,348 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 16–17, 2026 | Planned (10b5-1) | Jason E. Dymbort (General Counsel and Secretary) sold 9,380 shares between Mar 16 and Mar 17 at about $199.67 ($1.9M), marked as a 10b5-1 plan trade. Holdings down 49% to 9,850 shares. | SEC filing Filed Mar 17, 2026 |
| Mar 16, 2026 | Sale | Patrick James Buehler (Chief Product Officer) sold 180 shares at $200.80 ($36K). Holdings down 2% to 7,088 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 16–17, 2026 | Planned (10b5-1) | Alexander R. Bradley (CFO) sold 14,696 shares between Mar 16 and Mar 17 at about $200.00 ($2.9M), marked as a 10b5-1 plan trade. Holdings down 33% to 30,000 shares. | SEC filing Filed Mar 17, 2026 |
| Mar 16, 2026 | Sale | Georges Antoun (Chief Commercial Officer) sold 245 shares at $200.80 ($49K). Holdings down 1% to 19,126 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 10, 2026 | Planned (10b5-1) | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 408 shares at $195.70 ($80K), marked as a 10b5-1 plan trade. Holdings down 4% to 9,101 shares. | SEC filing Filed Mar 11, 2026 |
| Mar 10, 2026 | Planned (10b5-1) | Nathan B. Theurer (VP - Global Controller and CAO) sold 324 shares at $195.70 ($63K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Mar 11, 2026 |
| Mar 9, 2026 | Sale | Georges Antoun (Chief Commercial Officer) sold 791 shares at $190.36 ($151K). Holdings down 4% to 18,784 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Alexander R. Bradley (CFO) sold 1,756 shares at $190.36 ($334K). Holdings down 4% to 43,255 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Patrick James Buehler (Chief Product Officer) sold 697 shares at $190.36 ($133K). Holdings down 9% to 6,841 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Jason E. Dymbort (General Counsel and Secretary) sold 1,305 shares at $190.36 ($248K). Holdings down 7% to 18,376 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Markus Gloeckler (Chief Technology Officer) sold 1,325 shares at $190.36 ($252K). Holdings down 12% to 9,862 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Michael Koralewski (Chief Supply Chain Officer) sold 756 shares at $190.36 ($144K). Holdings down 5% to 13,963 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Samantha L. Sloan (EVP, Corporate Affairs) sold 303 shares at $190.36 ($58K). Holdings down 17% to 1,523 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Caroline Stockdale (Chief People and Comm. Officer) sold 1,041 shares at $190.36 ($198K). Holdings down 3% to 33,595 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Nathan B. Theurer (VP - Global Controller and CAO) sold 157 shares at $190.36 ($30K). Holdings down 33% to 324 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 1,386 shares at $190.36 ($264K). Holdings down 13% to 9,509 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 9, 2026 | Sale | Mark R Widmar (CEO and Director) sold 5,537 shares at $190.36 ($1.1M). Holdings down 5% to 99,879 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 4, 2026 | Planned (10b5-1) | Nathan B. Theurer (VP - Global Controller and CAO) sold 92 shares at $196.95 ($18K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Mar 5, 2026 |
| Mar 4, 2026 | Planned (10b5-1) | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 728 shares at $196.95 ($143K), marked as a 10b5-1 plan trade. Holdings down 9% to 7,606 shares. | SEC filing Filed Mar 5, 2026 |
| Mar 4, 2026 | Planned (10b5-1) | Markus Gloeckler (Chief Technology Officer) sold 3,640 shares at $196.95 ($717K), marked as a 10b5-1 plan trade. Holdings down 31% to 8,037 shares. | SEC filing Filed Mar 5, 2026 |
| Mar 3, 2026 | Sale | Georges Antoun (Chief Commercial Officer) sold 1,958 shares at $194.95 ($382K). Holdings down 10% to 17,705 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Alexander R. Bradley (CFO) sold 3,194 shares at $195.93 ($626K). Holdings down 7% to 40,794 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Patrick James Buehler (Chief Product Officer) sold 1,361 shares at $195.93 ($267K). Holdings down 19% to 5,863 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Samantha L. Sloan (EVP, Corporate Affairs) sold 111 shares at $195.93 ($22K). Holdings down 9% to 1,145 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Michael Koralewski (Chief Supply Chain Officer) sold 1,330 shares at $195.93 ($261K). Holdings down 9% to 12,865 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Markus Gloeckler (Chief Technology Officer) sold 3,425 shares at $195.93 ($671K). Holdings down 23% to 11,677 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Nathan B. Theurer (VP - Global Controller and CAO) sold 49 shares at $195.93 ($10K). Holdings down 35% to 92 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Kuntal Kumar Verma (Chief Manufacturing Officer) sold 3,426 shares at $195.93 ($671K). Holdings down 29% to 8,334 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Jason E. Dymbort (General Counsel and Secretary) sold 3,273 shares at $195.93 ($641K). Holdings down 16% to 16,625 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Mark R Widmar (CEO and Director) sold 7,738 shares at $195.93 ($1.5M). Holdings down 8% to 91,787 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Mar 3, 2026 | Sale | Caroline Stockdale (Chief People and Comm. Officer) sold 1,650 shares at $195.93 ($323K). Holdings down 5% to 32,200 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Nov 7, 2025 | Sale | Paul H. Stebbins (Director) sold 7,000 shares indirectly (by trust) at about $262.40 ($1.8M). Holdings by trust down 31% to 15,287 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 10, 2025 |
| Nov 6, 2025 | Sale | Michael T Sweeney (Director) sold 4,500 shares at about $271.11 ($1.2M). Holdings down 25% to 13,662 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 10, 2025 |
| Nov 4, 2025 | Planned (10b5-1) | Georges Antoun (Chief Commercial Officer) sold 37,412 shares at about $265.01 ($9.9M), marked as a 10b5-1 plan trade. Holdings down 71% to 15,424 shares. | SEC filing Filed Nov 6, 2025 |
82 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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