X0306 4 2022-03-04 0001274494 FIRST SOLAR, INC. FSLR 0001645425 Bradley Alexander R. C/O FIRST SOLAR, INC. 350 WEST WASHINGTON STREET, SUITE 600 TEMPE AZ 85281-1244 1 Chief Financial Officer Common Stock 2022-03-04 4 M 0 2409 0 A 24530 D Common Stock 2022-03-04 4 F 0 1071 71.85 D 23459 D Common Stock 2022-03-04 4 M 0 3650 0 A 27109 D Common Stock 2022-03-04 4 F 0 1623 71.85 D 25486 D Common Stock 2022-03-04 4 M 0 4035 0 A 29521 D Common Stock 2022-03-04 4 F 0 1794 71.85 D 27727 D Common Stock 2022-03-04 4 M 0 1466 0 A 29193 D Common Stock 2022-03-04 4 F 0 652 71.85 D 28541 D Common Stock 2022-03-07 4 S 0 160 72.88 D 28381 D Common Stock 2022-03-07 4 S 0 340 73.84 D 28041 D Common Stock 2022-03-07 4 S 0 1529 75.20 D 26512 D Common Stock 2022-03-07 4 S 0 1182 75.88 D 25330 D Restricted Stock Units 2022-03-04 4 M 0 2409 0 D Common Stock 2409 0 D Restricted Stock Units 2022-03-04 4 M 0 3650 0 D Common Stock 3650 3650 D Restricted Stock Units 2022-03-04 4 M 0 4035 0 D Common Stock 4035 8070 D Restricted Stock Units 2022-03-04 4 M 0 1466 0 D Common Stock 1466 5862 D Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 6, 2018. Represents shares of common stock withheld by the Issuer to satisfy certain tax withholding obligations with the vesting of the restricted stock units. Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 6, 2019. Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 6, 2020. Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on March 6, 2021. This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 5, 2021. This transaction was executed in multiple trades at prices ranging from $72.29 to $73.23. The price reported above reflects the weighted average sale price for the transactions reported on this line. This transaction was executed in multiple trades at prices ranging from $73.50 to $74.45. The price reported above reflects the weighted average sale price for the transactions reported on this line. This transaction was executed in multiple trades at prices ranging from $74.53 to $75.50. The price reported above reflects the weighted average sale price for the transactions reported on this line. This transaction was executed in multiple trades at prices ranging from $75.54 to $76.39. The price reported above reflects the weighted average sale price for the transactions reported on this line. 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 2015 Omnibus Incentive Compensation Plan. The restricted stock units were granted on March 6, 2018 as part of the Issuer's annual equity grant to executive officers. These units are scheduled to vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date. The restricted stock units were granted on March 6, 2019 as part of the Issuer's annual equity grant to executive officers. These units are scheduled to vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date. The restricted stock units were granted on March 6, 2020 as part of the Issuer's annual equity grant to executive officers. These units are scheduled to vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date. 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, 2021 as part of the Issuer's annual equity grant to executive officers. These units are scheduled to vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date. /s/ Jason E. Dymbort, attorney-in-fact 2022-03-08