X0303 4/A 2008-06-04 2008-06-06 0 0000811596 KAISER ALUMINUM CORP KALU 0001213324 OSBORNE ALFRED E JR C/O KAISER ALUMINUM CORP. 27422 PORTOLA PARKWAY SUITE 350 FOOTHILL RANCH CA 92610 1 0 0 0 Common Stock, par value $0.01 per share 200 I By son 200 shares reported on the Form 4 which this filing amends, and on subsequent Form 4s filed on June 19, 2008, August 26, 2008 and September 8, 2008, as held by wife as UTMA custodian for son were transferred to such son upon his attainment of the age of majority and have been directly held by such son since March 2008. /s/ John M. Donnan, with power of attorney for Alfred E. Osborne, Jr. 2009-03-06