0001969223-26-000472.txt : 20260427 0001969223-26-000472.hdr.sgml : 20260427 20260427163617 ACCESSION NUMBER: 0001969223-26-000472 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20260427 DATE AS OF CHANGE: 20260427 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: KAISER ALUMINUM CORP CENTRAL INDEX KEY: 0000811596 STANDARD INDUSTRIAL CLASSIFICATION: ROLLING DRAWING & EXTRUDING OF NONFERROUS METALS [3350] ORGANIZATION NAME: 04 Manufacturing EIN: 943030279 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-09447 FILM NUMBER: 26901572 BUSINESS ADDRESS: STREET 1: 1550 W. MCEWEN DRIVE, SUITE 500 CITY: FRANKLIN STATE: TN ZIP: 37067 BUSINESS PHONE: 6292527040 MAIL ADDRESS: STREET 1: 1550 W. MCEWEN DRIVE, SUITE 500 CITY: FRANKLIN STATE: TN ZIP: 37067 FORMER COMPANY: FORMER CONFORMED NAME: KAISERTECH LTD DATE OF NAME CHANGE: 19901122 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Gheorghe Iulian CENTRAL INDEX KEY: 0002104071 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 1550 WEST MCEWEN DRIVE STREET 2: SUITE 500 CITY: FRANKLIN STATE: TN ZIP: 37067 144 1 primary_doc.xml 144 0002104071 XXXXXXXX LIVE 0000811596 Kaiser Aluminum 001-09447 1550 West McEwen Drive, Suite 500 Franklin TN 37067 6292527040 Iulian Gheorghe Officer common UBS Financial Services Inc

1000 Harbor Blvd 3rd Floor Weehawken NJ 07086

175 30488.5 16340606 04/27/2026 NASDAQ common 02/19/2026 RSU Kaiser Aluminum N 175 04/27/2026 cash Y 04/27/2026 /s/JOSEPH CASSIDY, for UBS Financial Services Inc, as attorney-in-fact for Iulian Gheorghe