FIRST SOLAR, INC. — Director's Dealing 2025

Aug 18, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIRST SOLAR, INC. (FSLR)
CIK: 0001274494
Period of Report: 2025-08-15

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-08-15	Common Stock	S	47	$185.15	Disposed	84135	Direct
2025-08-15	Common Stock	S	9	$186.47	Disposed	84126	Direct
2025-08-15	Common Stock	S	152	$189.98	Disposed	83974	Direct
2025-08-15	Common Stock	S	192	$191.30	Disposed	83782	Direct
2025-08-15	Common Stock	S	30	$192.35	Disposed	83752	Direct
2025-08-15	Common Stock	S	33	$192.80	Disposed	83719	Direct
2025-08-15	Common Stock	S	24	$194.25	Disposed	83695	Direct
2025-08-15	Common Stock	S	179	$195.19	Disposed	83516	Direct
2025-08-15	Common Stock	S	36	$196.64	Disposed	83480	Direct
2025-08-15	Common Stock	S	83	$197.84	Disposed	83397	Direct
2025-08-15	Common Stock	S	58	$198.68	Disposed	83339	Direct
2025-08-15	Common Stock	S	160	$199.84	Disposed	83179	Direct
2025-08-15	Common Stock	S	28	$200.92	Disposed	83151	Direct
2025-08-15	Common Stock	S	152	$202.13	Disposed	82999	Direct
2025-08-15	Common Stock	S	509	$203.08	Disposed	82490	Direct
2025-08-15	Common Stock	S	512	$203.97	Disposed	81978	Direct
2025-08-15	Common Stock	S	83	$205.05	Disposed	81895	Direct
2025-08-15	Common Stock	S	34	$205.92	Disposed	81861	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 $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.

F3: 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.

F4: 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.

F5: 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.

F6: 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.

F7: 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.

F8: 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.

F9: 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.

F10: 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.

F11: 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.

F12: 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.

F13: 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.

F14: 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.

F15: 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.

F16: 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.

F17: 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.

F18: 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.

F19: 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.