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person · Reporting owner

Widmar Mark R

Disclosed activity across 2 companies

Tapewire entity
32368
SEC CIK
0001362208

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
ALBEMARLE CORPALB · Entity 2581DirectorJuly 01, 2026July 06, 2026
FIRST SOLAR, INC.FSLR · Entity 72Director · Chief Executive OfficerMay 22, 2026May 27, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

ALBEMARLE CORP

Report date July 01, 2026 · Filed July 06, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Phantom StockSEC Table II · derivative / convertible securityDirect1,576 Reported balance After 2026-07-01 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-07-01 · Grant · Acquired 1,250 · Balance 1,576

F1: Phantom Stock units convert 1 for 1 into common stock.

F2: Phantom Stock units represent an annual award of non-employee director stock compensation issued under the 2023 Stock Compensation and Deferral Election Plan for Non-Employee Directors of Albemarle Corporation (the "2023 Directors Plan"). Units to vest on July 1, 2027.

F3: Payable as shares of common stock upon events established by the reporting person in accordance with the terms of the 2023 Directors Plan.

F4: No expiration date.

F5: Includes dividend equivalent rights earned based on total shares of Phantom Stock in reporting person's deferred stock account.

Filing footnotes · ownership attribution and instrument terms

F1: Phantom Stock units convert 1 for 1 into common stock.

F2: Phantom Stock units represent an annual award of non-employee director stock compensation issued under the 2023 Stock Compensation and Deferral Election Plan for Non-Employee Directors of Albemarle Corporation (the "2023 Directors Plan"). Units to vest on July 1, 2027.

F3: Payable as shares of common stock upon events established by the reporting person in accordance with the terms of the 2023 Directors Plan.

F4: No expiration date.

F5: Includes dividend equivalent rights earned based on total shares of Phantom Stock in reporting person's deferred stock account.

FIRST SOLAR, INC.

Report date May 22, 2026 · Filed May 27, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect81,861 Ending reported balance After 2026-05-26 transaction · row 17
17 source rows · reconciled sequence

Row 1 · 2026-05-22 · Sale · Disposed 239 · Balance 88,794

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F2: This transaction was executed in multiple trades at prices ranging from $250 to $250.80. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 2 · 2026-05-22 · Sale · Disposed 172 · Balance 88,622

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F3: This transaction was executed in multiple trades at prices ranging from $251.12 to $252.10. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 3 · 2026-05-22 · Sale · Disposed 97 · Balance 88,525

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F4: This transaction was executed in multiple trades at prices ranging from $252.18 to $253.12. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 4 · 2026-05-22 · Sale · Disposed 218 · Balance 88,307

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F5: This transaction was executed in multiple trades at prices ranging from $253.23 to $254.20. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 5 · 2026-05-22 · Sale · Disposed 916 · Balance 87,391

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F6: This transaction was executed in multiple trades at prices ranging from $254.27 to $255.23. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 6 · 2026-05-22 · Sale · Disposed 64 · Balance 87,327

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F7: This transaction was executed in multiple trades at prices ranging from $255.31 to $255.88. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 7 · 2026-05-22 · Sale · Disposed 75 · Balance 87,252

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F8: This transaction was executed in multiple trades at prices ranging from $255.93 to $256.76. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 8 · 2026-05-22 · Sale · Disposed 149 · Balance 87,103

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F9: This transaction was executed in multiple trades at prices ranging from $256.92 to $257.81. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 9 · 2026-05-22 · Sale · Disposed 47 · Balance 87,056

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F10: This transaction was executed in multiple trades at prices ranging from $258.17 to $259.05. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 10 · 2026-05-26 · Sale · Disposed 364 · Balance 86,692

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F11: This transaction was executed in multiple trades at prices ranging from $264.92 to $265.53. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 11 · 2026-05-26 · Sale · Disposed 1,237 · Balance 85,455

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F12: This transaction was executed in multiple trades at prices ranging from $266.13 to $267.01. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 12 · 2026-05-26 · Sale · Disposed 628 · Balance 84,827

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F13: This transaction was executed in multiple trades at prices ranging from $267.39 to $268.33. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 13 · 2026-05-26 · Sale · Disposed 1,009 · Balance 83,818

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F14: This transaction was executed in multiple trades at prices ranging from $268.47 to $269.17. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 14 · 2026-05-26 · Sale · Disposed 632 · Balance 83,186

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F15: This transaction was executed in multiple trades at prices ranging from $269.80 to $270.41. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 15 · 2026-05-26 · Sale · Disposed 726 · Balance 82,460

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F16: This transaction was executed in multiple trades at prices ranging from $270.88 to $271.85. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 16 · 2026-05-26 · Sale · Disposed 473 · Balance 81,987

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F17: This transaction was executed in multiple trades at prices ranging from $272.59 to $273.58. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 17 · 2026-05-26 · Sale · Disposed 126 · Balance 81,861

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F18: This transaction was executed in multiple trades at prices ranging from $276.28 to $276.29. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Filing footnotes · ownership attribution and instrument terms

F1: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

F2: This transaction was executed in multiple trades at prices ranging from $250 to $250.80. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3: This transaction was executed in multiple trades at prices ranging from $251.12 to $252.10. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4: This transaction was executed in multiple trades at prices ranging from $252.18 to $253.12. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5: This transaction was executed in multiple trades at prices ranging from $253.23 to $254.20. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F6: This transaction was executed in multiple trades at prices ranging from $254.27 to $255.23. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F7: This transaction was executed in multiple trades at prices ranging from $255.31 to $255.88. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F8: This transaction was executed in multiple trades at prices ranging from $255.93 to $256.76. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F9: This transaction was executed in multiple trades at prices ranging from $256.92 to $257.81. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F10: This transaction was executed in multiple trades at prices ranging from $258.17 to $259.05. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F11: This transaction was executed in multiple trades at prices ranging from $264.92 to $265.53. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F12: This transaction was executed in multiple trades at prices ranging from $266.13 to $267.01. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F13: This transaction was executed in multiple trades at prices ranging from $267.39 to $268.33. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F14: This transaction was executed in multiple trades at prices ranging from $268.47 to $269.17. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F15: This transaction was executed in multiple trades at prices ranging from $269.80 to $270.41. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F16: This transaction was executed in multiple trades at prices ranging from $270.88 to $271.85. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F17: This transaction was executed in multiple trades at prices ranging from $272.59 to $273.58. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F18: This transaction was executed in multiple trades at prices ranging from $276.28 to $276.29. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
March 06, 2026 Filed Mar 11, 2026 00:48 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionRestricted Stock Units · Derivative 4,194 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000055 · form4.xml · derivative · entry 12

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,584

Underlying: Common Stock · 4,194 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F10 · derivative.exercise_date: The restricted stock units were granted on March 6, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2025 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F10 · derivative.expiration_date: The restricted stock units were granted on March 6, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2025 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

Read SEC document
March 06, 2026 Filed Mar 11, 2026 00:48 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionRestricted Stock Units · Derivative 3,156 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000055 · form4.xml · derivative · entry 11

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,313

Underlying: Common Stock · 3,156 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F9 · derivative.exercise_date: The restricted stock units were granted on March 6, 2024 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2024 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F9 · derivative.expiration_date: The restricted stock units were granted on March 6, 2024 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2024 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

Read SEC document
March 06, 2026 Filed Mar 11, 2026 00:48 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionRestricted Stock Units · Derivative 1,178 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000055 · form4.xml · derivative · entry 10

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,354

Underlying: Common Stock · 1,178 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F8 · derivative.exercise_date: The restricted stock units were granted on March 6, 2023 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2023 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F8 · derivative.expiration_date: The restricted stock units were granted on March 6, 2023 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2023 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

Read SEC document
March 06, 2026 Filed Mar 11, 2026 00:48 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionRestricted Stock Units · Derivative 5,101 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000055 · form4.xml · derivative · entry 9

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,101 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F7 · derivative.exercise_date: The restricted stock units were granted on March 6, 2021 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2021 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F7 · derivative.expiration_date: The restricted stock units were granted on March 6, 2021 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2021 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

Read SEC document
March 06, 2026 Filed Mar 11, 2026 00:48 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionCommon Stock 4,194 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000055 · form4.xml · nonDerivative · entry 4

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,416

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · shares: Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 6, 2025.

Read SEC document
March 06, 2026 Filed Mar 11, 2026 00:48 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionCommon Stock 3,156 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000055 · form4.xml · nonDerivative · entry 3

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,222

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 6, 2024.

Read SEC document
March 06, 2026 Filed Mar 11, 2026 00:48 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionCommon Stock 1,178 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000055 · form4.xml · nonDerivative · entry 2

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,066

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on March 6, 2023.

Read SEC document
March 06, 2026 Filed Mar 11, 2026 00:48 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionCommon Stock 5,101 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000055 · form4.xml · nonDerivative · entry 1

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,888

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on March 6, 2021.

Read SEC document
March 03, 2026 Filed Mar 4, 2026 01:13 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 7,738 $195.93 $1,516,106.34
Disclosure

SEC source: 0001274494-26-000032 · form4.xml · nonDerivative · entry 2

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,787

F2 · shares: Represents shares of common stock sold by the Issuer to satisfy certain tax withholding obligations with the vesting of the performance share units.

Read SEC document
February 27, 2026 Filed Mar 4, 2026 01:13 UTC FIRST SOLAR, INC. FSLR · Entity 72 GrantCommon Stock 17,664 $0.00 $0.00
Disclosure

SEC source: 0001274494-26-000032 · form4.xml · nonDerivative · entry 1

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,525

F1 · shares: Represents the acquisition of shares of common stock issued upon the vesting of the performance share units granted on March 6, 2023, which performance share unit awards vested over an approximately three-year performance period contingent upon the achievement of certain performance objectives.

Read SEC document
February 26, 2026 Filed Mar 2, 2026 22:24 UTC ALBEMARLE CORP ALB · Entity 2581 GrantPhantom Stock · Derivative 325 $0.00 $0.00
Disclosure

SEC source: 0000915913-26-000026 · wk-form4_1772490260.xml · derivative · entry 1

Widmar Mark R · CIK 0001362208 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 325

Underlying: Common Stock · 325 shares

Expires not disclosed

F1 · derivative.exercise_price: Phantom Stock units convert 1 for 1 into common stock.

F2 · derivative.exercise_date: Payable as shares of common stock upon events established by the reporting person in accordance with the terms of the 2023 Directors Plan.

F3 · derivative.expiration_date: No expiration date.

F4 · balance_after: Shares represent a pro-rata grant of an annual installment of non-employee director stock compensation pursuant to the Albemarle Corporation 2023 Stock Compensation and Deferral Election Plan for Non-Employee Directors (the "2023 Directors Plan"). Shares to vest on July 1, 2026.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 34 $205.92 $7,001.28
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 18

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 81,861

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F19 · price: This transaction was executed in multiple trades at prices ranging from $205.73 to $206.25. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 83 $205.05 $17,019.15
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 17

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 81,895

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F18 · price: This transaction was executed in multiple trades at prices ranging from $204.66 to $205.65. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 512 $203.97 $104,432.64
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 16

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 81,978

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F17 · price: This transaction was executed in multiple trades at prices ranging from $203.54 to $204.50. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 509 $203.08 $103,367.72
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 15

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 82,490

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F16 · price: This transaction was executed in multiple trades at prices ranging from $202.54 to $203.53. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 152 $202.13 $30,723.76
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 14

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 82,999

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F15 · price: This transaction was executed in multiple trades at prices ranging from $201.50 to $202.34. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 28 $200.92 $5,625.76
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 13

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,151

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F14 · price: This transaction was executed in multiple trades at prices ranging from $200.45 to $201.38. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 160 $199.84 $31,974.40
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 12

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,179

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F13 · price: This transaction was executed in multiple trades at prices ranging from $199.44 to $200.29. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 58 $198.68 $11,523.44
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 11

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,339

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F12 · price: This transaction was executed in multiple trades at prices ranging from $198.39 to $199.12. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 83 $197.84 $16,420.72
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 10

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,397

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F11 · price: This transaction was executed in multiple trades at prices ranging from $197.35 to $198.28. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 36 $196.64 $7,079.04
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 9

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,480

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F10 · price: This transaction was executed in multiple trades at prices ranging from $196.25 to $197.01. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 179 $195.19 $34,939.01
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 8

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,516

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F9 · price: This transaction was executed in multiple trades at prices ranging from $195 to $195.75. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 24 $194.25 $4,662.00
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 7

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,695

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F8 · price: This transaction was executed in multiple trades at prices ranging from $193.99 to $194.93. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 33 $192.80 $6,362.40
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 6

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,719

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F7 · price: This transaction was executed in multiple trades at prices ranging from $192.67 to $193.19. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 30 $192.35 $5,770.50
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 5

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,752

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F6 · price: This transaction was executed in multiple trades at prices ranging from $191.65 to $192.60. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 192 $191.30 $36,729.60
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 4

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,782

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F5 · price: This transaction was executed in multiple trades at prices ranging from $190.58 to $191.50. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 152 $189.98 $28,876.96
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 3

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 83,974

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F4 · price: This transaction was executed in multiple trades at prices ranging from $189.35 to $190. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 9 $186.47 $1,678.23
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 2

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 84,126

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F3 · price: This transaction was executed in multiple trades at prices ranging from $186.06 to $186.99. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 15, 2025 Filed Aug 18, 2025 21:36 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 47 $185.15 $8,702.05
Disclosure

SEC source: 0001127602-25-020606 · form4.xml · nonDerivative · entry 1

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 84,135

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F2 · price: This transaction was executed in multiple trades at prices ranging from $185 to $185.88. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 13, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 788 $189.91 $149,649.08
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 11

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 84,182

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F12 · price: This transaction was executed in multiple trades at prices ranging from $189.67 to $190.25. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 13, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 274 $188.82 $51,736.68
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 10

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 84,970

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F11 · price: This transaction was executed in multiple trades at prices ranging from $188.51 to $189.20. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 13, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 786 $187.38 $147,280.68
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 9

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 85,244

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F10 · price: This transaction was executed in multiple trades at prices ranging from $187.11 to $187.84. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 13, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 581 $186.58 $108,402.98
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 8

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 86,030

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F9 · price: This transaction was executed in multiple trades at prices ranging from $186.07 to $186.98. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 13, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 1,367 $185.45 $253,510.15
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 7

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 86,611

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F8 · price: This transaction was executed in multiple trades at prices ranging from $185.00 to $185.96. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 12, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 200 $187.74 $37,548.00
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 6

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 87,978

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F7 · price: This transaction was executed in multiple trades at prices ranging from $187.73 to $187.74. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 12, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 2,834 $186.97 $529,872.98
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 5

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 88,178

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F6 · price: This transaction was executed in multiple trades at prices ranging from $186.61 to $187.49. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 12, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 5,456 $186.17 $1,015,743.52
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 4

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 91,012

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F5 · price: This transaction was executed in multiple trades at prices ranging from $185.61 to $186.60. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 12, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 14,322 $185.04 $2,650,142.88
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 3

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 96,468

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F4 · price: This transaction was executed in multiple trades at prices ranging from $184.52 to $185.46. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 12, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 900 $183.79 $165,411.00
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 2

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 110,790

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F3 · price: This transaction was executed in multiple trades at prices ranging from $183.26 to $184.22. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 12, 2025 Filed Aug 14, 2025 23:11 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 200 $181.78 $36,356.00
Disclosure

SEC source: 0001127602-25-020485 · form4.xml · nonDerivative · entry 1

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 111,690

F1 · date: This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 13, 2025.

F2 · price: This transaction was executed in multiple trades at prices ranging from $181.77 to $181.78. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
May 01, 2025 Filed May 2, 2025 21:33 UTC FIRST SOLAR, INC. FSLR · Entity 72 GrantRestricted Stock Units · Derivative 15,209 $0.00 $0.00
Disclosure

SEC source: 0001127602-25-013267 · form4.xml · derivative · entry 1

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,209

Underlying: Common Stock · 15,209 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F2 · derivative.exercise_date: The restricted stock units were granted on May 1, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on May 1, 2025 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F2 · derivative.expiration_date: The restricted stock units were granted on May 1, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on May 1, 2025 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

Read SEC document
March 17, 2025 Filed Mar 18, 2025 23:39 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 1,966 $133.75 $262,952.50
Disclosure

SEC source: 0001127602-25-009879 · form4.xml · nonDerivative · entry 2

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 111,890

F2 · shares: Represents shares of common stock sold by the Issuer to satisfy certain tax withholding obligations with the vesting of the restricted stock units.

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March 14, 2025 Filed Mar 18, 2025 23:39 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionRestricted Stock Units · Derivative 4,856 $0.00 $0.00
Disclosure

SEC source: 0001127602-25-009879 · form4.xml · derivative · entry 3

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,712

Underlying: Common Stock · 4,856 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F4 · derivative.exercise_date: The restricted stock units were granted on March 15, 2022 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 15, 2022 are scheduled to vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F4 · derivative.expiration_date: The restricted stock units were granted on March 15, 2022 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 15, 2022 are scheduled to vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

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March 14, 2025 Filed Mar 18, 2025 23:39 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionCommon Stock 4,856 $0.00 $0.00
Disclosure

SEC source: 0001127602-25-009879 · form4.xml · nonDerivative · entry 1

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,856

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on March 15, 2022.

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March 07, 2025 Filed Mar 10, 2025 22:18 UTC FIRST SOLAR, INC. FSLR · Entity 72 SaleCommon Stock 1,272 $132.96 $169,125.12
Disclosure

SEC source: 0001127602-25-008932 · form4.xml · nonDerivative · entry 6

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 109,000

F5 · shares: Represents shares of common stock sold to satisfy certain tax withholding obligations with the vesting of the restricted stock units.

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March 06, 2025 Filed Mar 10, 2025 22:18 UTC FIRST SOLAR, INC. FSLR · Entity 72 GrantRestricted Stock Units · Derivative 16,778 $0.00 $0.00
Disclosure

SEC source: 0001127602-25-008932 · form4.xml · derivative · entry 10

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,778

Underlying: Common Stock · 16,778 shares

Expires not disclosed

F6 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F10 · derivative.exercise_date: The restricted stock units were granted on March 6, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2025 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F10 · derivative.expiration_date: The restricted stock units were granted on March 6, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2025 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

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March 06, 2025 Filed Mar 10, 2025 22:18 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionRestricted Stock Units · Derivative 3,156 $0.00 $0.00
Disclosure

SEC source: 0001127602-25-008932 · form4.xml · derivative · entry 9

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,469

Underlying: Common Stock · 3,156 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F9 · derivative.exercise_date: The restricted stock units were granted on March 6, 2024 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2024 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F9 · derivative.expiration_date: The restricted stock units were granted on March 6, 2024 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2024 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

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March 06, 2025 Filed Mar 10, 2025 22:18 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionRestricted Stock Units · Derivative 1,178 $0.00 $0.00
Disclosure

SEC source: 0001127602-25-008932 · form4.xml · derivative · entry 8

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,532

Underlying: Common Stock · 1,178 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F8 · derivative.exercise_date: The restricted stock units were granted on March 6, 2023 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2023 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F8 · derivative.expiration_date: The restricted stock units were granted on March 6, 2023 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2023 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

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March 06, 2025 Filed Mar 10, 2025 22:18 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionRestricted Stock Units · Derivative 5,102 $0.00 $0.00
Disclosure

SEC source: 0001127602-25-008932 · form4.xml · derivative · entry 7

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,101

Underlying: Common Stock · 5,102 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_price: Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

F7 · derivative.exercise_date: The restricted stock units were granted on March 6, 2021 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2021 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

F7 · derivative.expiration_date: The restricted stock units were granted on March 6, 2021 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2021 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

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March 06, 2025 Filed Mar 10, 2025 22:18 UTC FIRST SOLAR, INC. FSLR · Entity 72 Exercise / conversionCommon Stock 3,156 $0.00 $0.00
Disclosure

SEC source: 0001127602-25-008932 · form4.xml · nonDerivative · entry 5

Widmar Mark R · CIK 0001362208 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,272

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · shares: Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 6, 2024.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.