Mark R. Widmar - 22 May 2026 Form 4 Insider Report for FIRST SOLAR, INC. (FSLR)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: FSLR
Reported as of: 22 May 2026
Net transaction value: -$1,899,802
SEC form: 4
Accepted by SEC: 27 May 2026, 16:03:40 UTC
Prior SEC filing: 22 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Jason E. Dymbort, attorney-in-fact

Key filing fact

Mark R. Widmar filed Form 4 for FIRST SOLAR, INC. (FSLR) on 27 May 2026.

Key facts

This page summarizes Mark R. Widmar's Form 4 filing for FIRST SOLAR, INC. (FSLR).
17 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 27 May 2026, 16:03.

Change

Previous filing in this sequence was filed on 22 May 2026.
Current net transaction value: -$1,899,802.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001362208 Primary reporting owner

Widmar Mark R

Relationship: Chief Executive Officer, Director
Address: C/O FIRST SOLAR, INC., 4300 E CAMELBACK ROAD, SUITE 220, PHOENIX
Signature: /s/ Jason E. Dymbort, attorney-in-fact
Signature date: 27 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

FSLR transaction

Common Stock

Sale

Transaction value: $59,755
Shares: -239
Change %: -0.27%
Price: $250.02
Shares after: 88,794
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F2

FSLR transaction

Common Stock

Sale

Transaction value: $43,263
Shares: -172
Change %: -0.19%
Price: $251.53
Shares after: 88,622
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F3

FSLR transaction

Common Stock

Sale

Transaction value: $24,528
Shares: -97
Change %: -0.11%
Price: $252.87
Shares after: 88,525
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F4

FSLR transaction

Common Stock

Sale

Transaction value: $55,291
Shares: -218
Change %: -0.25%
Price: $253.63
Shares after: 88,307
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F5

FSLR transaction

Common Stock

Sale

Transaction value: $233,516
Shares: -916
Change %: -1%
Price: $254.93
Shares after: 87,391
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F6

FSLR transaction

Common Stock

Sale

Transaction value: $16,358
Shares: -64
Change %: -0.07%
Price: $255.59
Shares after: 87,327
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F7

FSLR transaction

Common Stock

Sale

Transaction value: $19,224
Shares: -75
Change %: -0.09%
Price: $256.32
Shares after: 87,252
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F8

FSLR transaction

Common Stock

Sale

Transaction value: $38,375
Shares: -149
Change %: -0.17%
Price: $257.55
Shares after: 87,103
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F9

FSLR transaction

Common Stock

Sale

Transaction value: $12,149
Shares: -47
Change %: -0.05%
Price: $258.48
Shares after: 87,056
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F10

FSLR transaction

Common Stock

Sale

Transaction value: $96,515
Shares: -364
Change %: -0.42%
Price: $265.15
Shares after: 86,692
Date: 26 May 2026
Ownership: Direct
Footnotes: F1, F11

FSLR transaction

Common Stock

Sale

Transaction value: $329,784
Shares: -1,237
Change %: -1.4%
Price: $266.60
Shares after: 85,455
Date: 26 May 2026
Ownership: Direct
Footnotes: F1, F12

FSLR transaction

Common Stock

Sale

Transaction value: $168,128
Shares: -628
Change %: -0.73%
Price: $267.72
Shares after: 84,827
Date: 26 May 2026
Ownership: Direct
Footnotes: F1, F13

FSLR transaction

Common Stock

Sale

Transaction value: $271,310
Shares: -1,009
Change %: -1.2%
Price: $268.89
Shares after: 83,818
Date: 26 May 2026
Ownership: Direct
Footnotes: F1, F14

FSLR transaction

Common Stock

Sale

Transaction value: $170,672
Shares: -632
Change %: -0.75%
Price: $270.05
Shares after: 83,186
Date: 26 May 2026
Ownership: Direct
Footnotes: F1, F15

FSLR transaction

Common Stock

Sale

Transaction value: $196,913
Shares: -726
Change %: -0.87%
Price: $271.23
Shares after: 82,460
Date: 26 May 2026
Ownership: Direct
Footnotes: F1, F16

FSLR transaction

Common Stock

Sale

Transaction value: $129,209
Shares: -473
Change %: -0.57%
Price: $273.17
Shares after: 81,987
Date: 26 May 2026
Ownership: Direct
Footnotes: F1, F17

FSLR transaction

Common Stock

Sale

Transaction value: $34,813
Shares: -126
Change %: -0.15%
Price: $276.29
Shares after: 81,861
Date: 26 May 2026
Ownership: Direct
Footnotes: F1, F18

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 18 footnotes

Footnote F1

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

Footnote 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.