FIRST SOLAR, INC. — Director's Dealing 2025

Aug 14, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST SOLAR, INC. (FSLR)
CIK: 0001274494
Period of Report: 2025-08-12

Reporting Person: Widmar Mark R (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-08-12	Common Stock	S	200	$181.78	Disposed	111690	Direct
2025-08-12	Common Stock	S	900	$183.79	Disposed	110790	Direct
2025-08-12	Common Stock	S	14322	$185.04	Disposed	96468	Direct
2025-08-12	Common Stock	S	5456	$186.17	Disposed	91012	Direct
2025-08-12	Common Stock	S	2834	$186.97	Disposed	88178	Direct
2025-08-12	Common Stock	S	200	$187.74	Disposed	87978	Direct
2025-08-13	Common Stock	S	1367	$185.45	Disposed	86611	Direct
2025-08-13	Common Stock	S	581	$186.58	Disposed	86030	Direct
2025-08-13	Common Stock	S	786	$187.38	Disposed	85244	Direct
2025-08-13	Common Stock	S	274	$188.82	Disposed	84970	Direct
2025-08-13	Common Stock	S	788	$189.91	Disposed	84182	Direct

Footnotes

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

F2: 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.

F3: 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.

F4: 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.

F5: 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.

F6: 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.

F7: 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.

F8: 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.

F9: 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.

F10: 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.

F11: 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.

F12: 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.