First Solar, Inc. Form 4 Filings

Chief Supply Chain Officer Michael Koralewski of First Solar, Inc. reported routine equity compensation activity. On March 13, 2026, 640 restricted stock units vested and were converted into 640 shares of common stock under the company’s 2020 Omnibus Incentive Compensation Plan.

On March 16, 2026, 264 of these shares were sold by the company at $200.80 per share to satisfy tax withholding obligations related to the vesting, rather than as a discretionary open-market sale. After these transactions, Koralewski directly owned 14,339 shares of First Solar common stock, indicating a relatively small net change in his overall holdings.

FIRST SOLAR, INC. Chief Technology Officer Markus Gloeckler reported routine equity compensation activity tied to previously granted restricted stock units. On March 13, 2026, 854 restricted stock units from a March 15, 2022 grant vested and were converted into 854 shares of common stock at a conversion price of $0.00 per share under the company’s 2020 Omnibus Incentive Compensation Plan.

In connection with this vesting, 368 common shares were sold by the company on March 16, 2026 at $200.80 per share to satisfy tax withholding obligations, a non-discretionary transaction. After these events, Gloeckler directly owned 10,348 shares of common stock and 853 restricted stock units.

FIRST SOLAR, INC. General Counsel and Secretary Jason E. Dymbort reported a combination of stock vesting and share sales. On March 13, 2026, 854 restricted stock units vested and converted into 854 shares of common stock, issued at a conversion price of $0.00 under the company’s 2020 Omnibus Incentive Compensation Plan. On the same date, his common stock holdings increased to 19,230 shares, and 853 restricted stock units remained outstanding from that grant.

To cover related tax withholding obligations and pursuant to a pre-established Rule 10b5-1 trading plan, a total of 9,380 common shares were sold in open-market transactions on March 16–17, 2026, including 358 shares at $200.80 per share and 9,022 shares at a weighted average price of $199.62. After these transactions, Dymbort directly held 9,850 shares of First Solar common stock.

FIRST SOLAR, INC. Chief Product Officer Patrick James Buehler reported routine equity compensation activity involving restricted stock units and related tax withholding. On March 13, 2026, 427 shares of common stock were issued upon vesting of 20% of restricted stock units granted on March 15, 2022 under the 2020 Omnibus Incentive Compensation Plan. To satisfy tax withholding obligations tied to this vesting, 180 shares of common stock were sold by the company at $200.80 per share, a non‑discretionary transaction. After these transactions, Buehler directly held 7,088 shares of First Solar common stock, indicating a net increase in his equity position.

FIRST SOLAR, INC. Chief Financial Officer Bradley Alexander reported selling 14,696 shares of common stock in multiple open-market transactions on March 16–17, 2026, at prices ranging from about $198 to $202 per share. These sales were executed under a previously adopted Rule 10b5-1 trading plan.

On March 13, 2026, he also exercised 1,441 restricted stock units, receiving the same number of common shares as part of an annual equity grant that vests 20% each year from a March 15, 2022 grant. Following the reported transactions, he directly holds 30,000 shares of First Solar common stock.

First Solar, Inc. Chief Commercial Officer Georges Antoun reported routine equity compensation activity and related tax share sales. On March 13, 2026, 587 restricted stock units granted on March 15, 2022 vested, converting into 587 shares of common stock under the company’s 2020 Omnibus Incentive Compensation Plan. The 2022 grant is scheduled to vest in 20% annual installments on each anniversary of the grant date. On March 16, 2026, 245 shares of common stock were sold by the issuer at $200.80 per share to satisfy tax withholding obligations tied to this vesting, rather than as a discretionary open-market sale. Following these transactions, Antoun directly holds 19,126 shares of First Solar common stock.

FIRST SOLAR, INC. Chief Manufacturing Officer Kuntal Kumar Verma reported an open-market sale of 408 shares of Common Stock on March 10, 2026 at an average price of $195.70 per share. After this transaction, Verma directly holds 9,101 shares. The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on November 26, 2025, indicating it was scheduled in advance rather than timed discretionarily.

FIRST SOLAR, INC. executive Nathan B. Theurer, VP - Global Controller and CAO, sold 324 shares of Common Stock in an open-market transaction at $195.70 per share. Following this sale, his directly held Common Stock position reported in this filing is 0 shares. The transaction was carried out under a previously adopted Rule 10b5-1 trading plan, indicating it was pre-scheduled rather than timed discretionarily.

FIRST SOLAR, INC.'s Chief Commercial Officer Georges Antoun reported routine equity compensation activity and related share sales. On March 6, 2026, restricted stock units vested and were converted into a total of 1,870 shares of common stock from prior annual grants. He also received a new grant of 2,749 restricted stock units as part of the company’s 2026 executive equity program, each unit representing one future share of common stock upon vesting.

On March 9, 2026, 791 shares of common stock were sold at $190.36 per share to satisfy tax withholding obligations tied to the RSU vesting, rather than as a discretionary open-market sale. After these transactions, Antoun directly holds 18,784 shares of common stock and 2,749 restricted stock units, indicating he retains a substantial ongoing equity stake in First Solar.

FIRST SOLAR, INC. Chief Financial Officer Bradley Alexander R. reported routine equity compensation activity and related share sales. On March 6, 2026, several tranches of previously granted restricted stock units vested, converting a total of 4,217 units into common stock, and he received a new grant of 4,229 restricted stock units under the 2020 Omnibus Incentive Compensation Plan.

In connection with these vestings, 1,756 shares of common stock were sold by the issuer at $190.36 per share to satisfy tax withholding obligations, as noted in the footnotes. Following these transactions, the CFO directly holds 43,255 shares of First Solar common stock.

FIRST SOLAR, INC. Chief Product Officer Patrick James Buehler reported routine equity compensation activity and related tax-share sales. On March 6, 2026, a total of 1,675 restricted stock units vested and were converted into the same number of common shares from grants originally awarded on March 6 of 2021, 2023, 2024 and 2025. He also received a new grant of 1,903 restricted stock units as part of the company’s annual equity program for executive officers.

On March 9, 2026, a total of 697 common shares were sold at $190.36 per share. Footnotes state these shares were sold by the company to satisfy tax withholding obligations tied to the RSU vesting, rather than as discretionary open-market sales by Buehler. Following these transactions, he directly holds 6,841 common shares of First Solar.

FIRST SOLAR, INC. General Counsel and Secretary Jason E. Dymbort reported routine equity compensation activity and related tax withholding. On March 6, 2026, restricted stock units granted in prior years vested and were converted into 3,056 shares of common stock, and he received a new grant of 2,960 restricted stock units under the company’s 2020 Omnibus Incentive Compensation Plan. On March 9, 2026, 1,305 shares of common stock were sold at $190.36 per share by the issuer to satisfy tax withholding obligations tied to the vesting. After these transactions, Dymbort directly held 18,376 shares of First Solar common stock.

First Solar, Inc. Chief Technology Officer Markus Gloeckler reported routine equity compensation activity and related share sales. On March 6, 2026, he acquired a total of 3,150 shares of common stock at $0.00 per share through the vesting and conversion of restricted stock units granted in prior years, and received a new grant of 3,066 restricted stock units as part of the company’s annual executive equity program.

On March 9, 2026, 1,325 shares of common stock were sold at an average price of $190.36 per share in open-market transactions described as being made by the issuer to satisfy tax withholding obligations arising from the RSU vesting. Following these transactions, Gloeckler directly holds 9,862 shares of First Solar common stock.

FIRST SOLAR, INC. Chief Supply Chain Officer Michael Koralewski reported routine equity compensation activity and related share disposals. On March 6, 2026, a total of 1,854 restricted stock units were exercised into the same number of common shares, reflecting scheduled vesting from grants made in 2021, 2023, 2024, and 2025 under the company’s 2020 Omnibus Incentive Compensation Plan. On the same date, he received a new annual equity grant of 1,903 restricted stock units, each representing the right to receive one share of common stock upon future vesting. On March 9, 2026, 756 common shares were sold at $190.36 per share, with a footnote stating these shares were sold by the issuer to satisfy tax withholding obligations arising from the RSU vesting. After these transactions, Koralewski directly holds 13,963 shares of common stock.

FIRST SOLAR, INC. executive Samantha L. Sloan, EVP of Corporate Affairs, reported a combination of restricted stock unit activity and related share dispositions. On March 6, 2026, several prior RSU grants partially vested, issuing multiple blocks of common stock, and she also received a new award of 1,692 restricted stock units as part of the annual equity program for executive officers. Following these vestings and exercises, her common stock holdings increased. On March 9, 2026, a total of 303 shares of common stock at $190.36 per share were sold by the issuer to satisfy tax withholding obligations tied to the RSU vesting, rather than as a discretionary open-market sale. After these transactions, Sloan directly holds 1,523 shares of First Solar common stock.

FIRST SOLAR, INC. executive Caroline Stockdale reported routine equity compensation activity. On March 6, 2026, restricted stock units vested and were exercised into 2,436 shares of common stock at a conversion price of $0.00 per share, and she received a new grant of 1,903 restricted stock units under the company’s 2020 Omnibus Incentive Compensation Plan. On March 9, 2026, a total of 1,041 shares of common stock were sold by the issuer to satisfy tax withholding obligations related to the vesting, and Stockdale held 33,595 common shares directly following these transactions, indicating a small, tax-driven reduction relative to her overall position.

FIRST SOLAR, INC. executive Nathan B. Theurer, VP – Global Controller and CAO, reported routine equity compensation activity and related tax withholding. On March 6, 2026, restricted stock units vested into 481 shares of common stock tied to grants from March 2021, 2023, 2024, and 2025, and he also received a new grant of 635 restricted stock units under the 2020 Omnibus Incentive Compensation Plan.

In connection with the RSU vesting, a total of 157 shares of common stock were sold on March 9, 2026 at $190.36 per share to satisfy tax withholding obligations, rather than as a discretionary open-market sale. Following these transactions, Theurer holds a direct position of common stock and outstanding restricted stock units as reported in the filing.

FIRST SOLAR, INC. Chief Manufacturing Officer Kuntal Kumar Verma reported routine equity compensation activity and related tax-share sales. On March 6, 2026, restricted stock units granted in prior years vested, converting into 3,289 shares of common stock, and he received a new award of 3,594 restricted stock units under the company’s 2020 Omnibus Incentive Compensation Plan.

Footnotes state that on March 9, 2026 the company sold 1,386 shares of common stock at $190.36 per share to satisfy tax withholding obligations from the vesting, rather than as a discretionary market sale. After these transactions, Verma holds 9,509 common shares directly and 3,594 restricted stock units that can settle into additional shares as they vest over time.

FIRST SOLAR, INC. Chief Executive Officer Mark R. Widmar reported a mix of equity awards, vesting, and share sales. On March 6, 2026, restricted stock units representing 13,629 shares of common stock vested and were converted into common shares, and he received a new grant of 12,685 restricted stock units under the 2020 Omnibus Incentive Compensation Plan. On March 9, 2026, he sold a total of 5,537 shares of common stock at $190.36 per share in transactions described as satisfying tax withholding obligations related to the RSU vesting. Following these transactions, Widmar held 99,879 shares of First Solar common stock directly.

First Solar, Inc. executive Nathan B. Theurer sold 92 shares of common stock in an open‑market transaction. The sale occurred at a price of $196.95 per share and was executed under a pre‑arranged Rule 10b5‑1 trading plan adopted on May 15, 2025. Following this sale, his reported directly held common shares for this line item were 0.

FIRST SOLAR, INC. Chief Manufacturing Officer Kuntal Kumar Verma reported an open-market sale of company stock. On March 4, 2026, he sold 728 shares of First Solar common stock at an average price of $196.95 per share.

The sale was executed under a pre-arranged Rule 10b5-1 trading plan previously adopted by the executive. After this transaction, he directly owns 7,606 shares of First Solar common stock.

First Solar, Inc. reported that its Chief Technology Officer, Markus Gloeckler, sold common stock in an open-market transaction. On March 4, 2026, he sold 3,640 shares of First Solar common stock at an average price of $196.95 per share. The sale was executed under a pre-established Rule 10b5-1 trading plan previously adopted on November 10, 2025, which automates trades according to preset instructions. After this transaction, Gloeckler directly held 8,037 shares of First Solar common stock.

First Solar, Inc. Chief Financial Officer Bradley Alexander reported two stock transactions. On February 27, 2026, he acquired 7,065 shares of common stock at $0 upon vesting of performance share units granted on March 6, 2023, following a three-year performance period tied to specific objectives. On March 3, 2026, 3,194 shares were sold at $195.93 per share by the company to cover tax withholding obligations related to this vesting. After these transactions, Alexander directly held 40,794 shares of First Solar common stock.

First Solar, Inc. Chief Product Officer Patrick James Buehler reported two stock transactions. On February 27, 2026, he acquired 2,826 shares of common stock at no cost upon vesting of performance share units granted on March 6, 2023, after an approximately three-year performance period. On March 3, 2026, 1,361 shares were sold by the company to satisfy tax withholding obligations related to this vesting at an average price of $195.93 per share. Following these transactions, Buehler directly owned 5,863 shares of First Solar common stock.

FIRST SOLAR, INC. executive Samantha L. Sloan reported two transactions in the company’s common stock. On February 27, 2026, she acquired 211 shares at $0.00 per share, issued upon vesting of performance share units originally granted on March 6, 2023 after an approximately three-year performance period tied to specified performance objectives. On March 3, 2026, 111 shares were sold by the issuer at $195.93 per share to cover tax withholding obligations related to that vesting, leaving her with 1,145 shares of directly held common stock.

First Solar Chief Supply Chain Officer Michael Koralewski reported two stock transactions involving company common shares. On February 27, 2026, he acquired 2,826 shares at no cost from the vesting of performance share units that were granted on March 6, 2023 and tied to multi-year performance goals. On March 3, 2026, 1,330 shares were sold by the company to cover tax withholding obligations related to that vesting, a disposition that did not represent an open-market sale by Koralewski. After these transactions, he directly held 12,865 shares of First Solar common stock.

First Solar, Inc.’s Chief Technology Officer Markus Gloeckler reported performance-based equity vesting and related tax-share withholding. On February 27, 2026, he acquired 7,065 shares of common stock at $0 per share upon vesting of performance share units granted on March 6, 2023, which vested over an approximately three-year period contingent on performance objectives. On March 3, 2026, 3,425 shares of common stock were sold by the issuer at $195.93 per share to satisfy tax withholding obligations from that vesting. After these transactions, Gloeckler directly owned 11,677 common shares.

FIRST SOLAR, INC. executive Nathan B. Theurer reported two stock transactions involving company common shares. On February 27, he acquired 141 shares at no cost through the vesting of performance share units granted on March 6, 2023, following an approximately three-year performance period tied to specific performance goals. On March 3, 49 shares were sold by the company to cover tax withholding obligations related to that vesting, leaving him with 92 shares of common stock held directly.

First Solar, Inc.’s Chief Manufacturing Officer Kuntal Kumar Verma reported equity compensation activity tied to performance share units. On February 27, 2026, he acquired 7,065 shares of common stock at $0 upon vesting of performance share units granted on March 6, 2023, after an approximately three-year performance period contingent on achieving certain performance objectives. On March 3, 2026, 3,426 shares of common stock were sold by the issuer at an average price of $195.93 to satisfy tax withholding obligations related to this vesting. After these transactions, he directly owned 8,334 common shares.

First Solar, Inc. General Counsel and Secretary Jason E. Dymbort reported both an equity award vesting and a related share sale. On February 27, 2026, he acquired 7,065 shares of common stock at $0.00 per share from the vesting of performance share units granted on March 6, 2023, after a roughly three-year performance period tied to specific performance objectives. On March 3, 2026, 3,273 shares of common stock were sold at an average price of $195.93 per share to satisfy tax withholding obligations arising from that vesting. A footnote also notes that his reported beneficial ownership was reduced by 7,616 shares previously transferred under a domestic relations order, which he no longer reports as beneficially owned.

First Solar, Inc. Chief Executive Officer Mark R. Widmar reported a mix of equity award vesting and related tax withholding activity. He acquired 17,664 shares of common stock on a grant or award basis on February 27, 2026, representing shares issued upon vesting of performance share units granted on March 6, 2023, after an approximately three-year performance period tied to performance objectives. On March 3, 2026, 7,738 shares of common stock were sold by the issuer to satisfy tax withholding obligations arising from that vesting, rather than as a discretionary open-market sale. Following these transactions, Widmar directly owned 91,787 shares of First Solar common stock.

FIRST SOLAR, INC. executive Caroline Stockdale, Chief People and Communications Officer, reported changes in her direct ownership of common stock. She acquired 3,532 shares on a grant/award basis upon the vesting of performance share units that were granted on March 6, 2023, following an approximately three-year performance period tied to specific performance objectives. In connection with this vesting, 1,650 shares were sold by the company to cover tax withholding obligations at a price of $195.93 per share. After these transactions, she directly held 32,200 shares of First Solar common stock.

First Solar, Inc. Chief Commercial Officer Georges Antoun reported equity compensation activity in company common stock. On March 2, 2026 he acquired 4,239 shares at $0.00 per share from the vesting of performance share units granted on March 6, 2023 after a multi‑year performance period. On March 3, 2026 the company sold 1,958 shares at $194.95 per share to satisfy tax withholding obligations tied to that vesting, leaving Antoun with 17,705 directly owned shares of First Solar common stock.

First Solar EVP Samantha L. Sloan reported equity award activity for January 15, 2026. She acquired 234 shares of First Solar common stock at $0 when 25% of a restricted stock unit grant from January 15, 2024 vested. To cover tax withholding on this vesting, 79 shares of common stock were withheld by the company at a price of $243.64 per share.

After these transactions, Sloan directly held 1,045 shares of First Solar common stock and 468 restricted stock units. Each restricted stock unit represents the right to receive one share of common stock as it vests annually in 25% installments on each anniversary of the January 15, 2024 grant date.

First Solar (FSLR) director reported open‑market sales of company stock. On November 7, 2025, the reporting person sold 1,423, 4,656, and 921 shares (transaction code S) at weighted average prices of $261.27, $262.59, and $263.19, respectively.

After these transactions, the filer beneficially owned 15,287 shares on an indirect basis By Stebbins Family Trust. Footnotes note each sale comprised multiple trades within stated price ranges, with detailed trade-by-trade data available on request.

First Solar (FSLR): A company director reported a sale of 4,500 shares of common stock on 11/06/2025 at a weighted average price of $271.11. The trades were executed in multiple transactions within a price range of $270.87 to $271.24. Following the sale, the director beneficially owns 13,662 shares, held directly.

The price range reflects individual trade executions; the reported price is the weighted average for the day’s transactions as disclosed.

First Solar (FSLR) disclosed an insider transaction by its Chief Commercial Officer, who sold 37,412 shares of common stock on 11/04/2025 across multiple trades priced between $255.05 and $269.37 under a Rule 10b5-1 trading plan adopted on August 5, 2025.

After these sales, the reporting person directly beneficially owns 15,424 shares.

Form 4 disclosure: RENDUCHINTALA VENKATA S M, a director of First Solar, Inc. (FSLR), was granted 205 shares of common stock as quarterly equity compensation on 09/30/2025 at $0 per share. After the grant the reporting person beneficially owned 1,470 shares of First Solar common stock in a direct ownership form. The filing identifies the grant as director compensation to a non-associate director. The Form 4 was filed as a single-person report and bears an electronic signature by an attorney-in-fact dated 10/01/2025.

Form 4 summary: Reporting person Lisa A. Kro, a director of First Solar, Inc. (FSLR), reported an acquisition on 09/30/2025 of 205 shares of First Solar common stock as part of the company’s quarterly equity compensation for non-associate directors. The report shows the shares were acquired at a price of $0 and that Ms. Kro’s total beneficial ownership following the transaction is 3,936 shares, held indirectly by trust. The filing was signed by an attorney-in-fact on 10/01/2025. The form indicates this is a single reporting person filing and identifies the reporting person’s relationship to the issuer as a director.

Form 4 summary: Anita M. George, a director of First Solar, Inc. (FSLR), was granted 205 shares of common stock as quarterly equity compensation on 09/30/2025 at no cash price. Following the grant she beneficially owns 4,627 shares in a direct ownership form. The filing lists her relationship to the issuer as a Director and the Form 4 was signed on behalf of the reporting person by attorney-in-fact Jason E. Dymbort on 10/01/2025. The explanation on the form states these shares represent the issuer's quarterly equity compensation for non-associate directors.