X0306 4 2022-03-02 0001274494 FIRST SOLAR, INC. FSLR 0001819691 Verma Kuntal Kumar C/O FIRST SOLAR, INC. 350 WEST WASHINGTON STREET, SUITE 600 TEMPE AZ 85281-1244 1 Chief Mfg. Engineering Officer Common Stock 2022-03-02 4 A 0 4019 0 A 4019 D Common Stock 2022-03-02 4 F 0 1800 69.51 D 2219 D Represents the acquisition of shares of common stock issued upon the vesting of the performance share units granted on March 1, 2021, which performance share unit awards were subject to vesting over an approximately three-year performance period contingent upon the achievement of certain performance objectives. Represents shares of common stock withheld by the Issuer to satisfy certain tax withholding obligations with the vesting of the performance share units. /s/ Jason E. Dymbort, attorney-in-fact 2022-03-04