144 0001234459 XXXXXXXX LIVE 0001274494 FIRST SOLAR, INC. 001-33156 350 West Washington Street, Suite 600 Tempe AZ 85288 6024149300 GEORGES ANTOUN Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

2400 405120.00 106848929 04/01/2024 NASDAQ Common 03/06/2023 Restricted and Performance Stock Units Issuer N 2400 03/06/2023 N/A N 10b5-1 Sales for MSL FBO GEORGES ANTOUN &MARTHA ANTOUN TEN ENT

350 West Washington Street, Suite 600 Tempe AZ 85288

Common 03/19/2024 356 52008.04 10b5-1 Sales for MSL FBO GEORGES ANTOUN &MARTHA ANTOUN TEN ENT

350 West Washington Street, Suite 600 Tempe AZ 85288

Common 03/08/2024 3240 525491.24 10b5-1 Sales for MSL FBO GEORGES ANTOUN &MARTHA ANTOUN TEN ENT

350 West Washington Street, Suite 600 Tempe AZ 85288

Common 03/04/2024 16667 2592593.52 04/01/2024 05/15/2023 /s/ Georges Antoun