X0306 4 2016-03-21 0001274494 FIRST SOLAR, INC. FSLR 0001647261 Bueter Christopher C/O FIRST SOLAR, INC. 350 WEST WASHINGTON STREET, SUITE 600 TEMPE AZ 85281-1244 1 EVP, Human Resources Common Stock 2016-03-21 4 M 0 2761 0 A 7184 D Common Stock 2016-03-21 4 F 0 896 71.24 D 6288 D Common Stock 2016-03-22 4 S 0 4716 70.63 D 1572 D Restricted Stock Units 2016-03-21 4 M 0 2761 0 D Common Stock 2761 0 D Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 21, 2012. Represents shares of common stock withheld by the Issuer to satisfy certain tax withholding obligations with the vesting of the restricted stock units. This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 25, 2015. This transaction was executed in multiple trades at prices ranging from $70.33 to $71.18. The price reported above reflects the weighted average sales 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 2010 Omnibus Incentive Compensation Plan. The restricted stock units were granted on March 21, 2012. These units are scheduled to vest at a rate of 25% per year, commencing on the first anniversary of the grant date. /s/ Peter C. Bartolino, Attorney-in-fact 2016-03-23