X0508 4 2023-03-06 0001274494 FIRST SOLAR, INC. FSLR 0001776631 Jeffers Byron Michael C/O FIRST SOLAR, INC. 350 WEST WASHINGTON ST., SUITE 600 TEMPE AZ 85288 1 VP - Global Controller and CAO 0 Restricted Stock Units 2023-03-06 4 A 0 660 0 A Common Stock 660 660 D 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. 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 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date. /s/ Jason E. Dymbort, attorney-in-fact 2023-10-03