First Solar (FSLR)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: FIRST SOLAR, INC. (FSLR) CIK: 0001274494 --- Reporting Owner --- Name: Sloan Samantha L. CIK: 0002066025 Role: Officer (EVP, Corporate Affairs) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-09-01 | Code: M (Exercise of derivative) Shares: +469 | Price: $0.00 Shares Owned After: 2,487 | Ownership: D (Direct) Footnotes: [F1] Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on September 1, 2022. [Transaction #2] Security: Common Stock Date: 2026-09-01 | Code: F (Payment of exercise/tax) Shares: -134 | Price: $199.65 Total Value: $26,753.10 Shares Owned After: 2,353 | Ownership: D (Direct) Footnotes: [F2] Represents shares of common stock withheld by the Issuer to satisfy certain tax withholding obligations with the vesting of the restricted stock units. --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-09-01 | Code: M (Exercise of derivative) Shares: -469 | Price: $0.00 Shares Owned After: 469 | Ownership: D (Direct) Footnotes: [F3] 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] The restricted stock units were granted on September 1, 2022 as part of the Issuer's incentive program to certain associates. The restricted stock units granted on September 1, 2022 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date. [F4] The restricted stock units were granted on September 1, 2022 as part of the Issuer's incentive program to certain associates. The restricted stock units granted on September 1, 2022 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date. --- Footnotes (Complete Index) --- F1: Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on September 1, 2022. F2: Represents shares of common stock withheld by the Issuer to satisfy certain tax withholding obligations with the vesting of the restricted stock units. F3: 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: The restricted stock units were granted on September 1, 2022 as part of the Issuer's incentive program to certain associates. The restricted stock units granted on September 1, 2022 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date. --- Signature --- /s/ /s/ Jason E. Dymbort, attorney-in-fact (2026-09-03)