X0206 3 2023-04-17 1 0000811596 KAISER ALUMINUM CORP KALU 0001972491 Grimley Richard P. 1550 WEST MCEWEN DRIVE, SUITE 500 FRANKLIN TN 37067 1 0 0 0 No securities are beneficially owned. /s/ Cherrie I. Tsai, with power of attorney for Richard P. Grimley 2023-04-19