<SEC-DOCUMENT>0001104659-25-057845-index.html : 20250609
<SEC-HEADER>0001104659-25-057845.hdr.sgml : 20250609
<ACCEPTANCE-DATETIME>20250609162436
ACCESSION NUMBER:		0001104659-25-057845
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20250609
DATE AS OF CHANGE:		20250609

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CENTURY ALUMINUM CO
		CENTRAL INDEX KEY:			0000949157
		STANDARD INDUSTRIAL CLASSIFICATION:	PRIMARY PRODUCTION OF ALUMINUM [3334]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				133070826
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34474
		FILM NUMBER:		251034429

	BUSINESS ADDRESS:	
		STREET 1:		1 SOUTH WACKER DRIVE
		STREET 2:		SUITE 1000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3126963101

	MAIL ADDRESS:	
		STREET 1:		1 SOUTH WACKER DRIVE
		STREET 2:		SUITE 1000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>tm2517542d1_defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: tm2517542d1_defa14a.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>tm2517542d1_def14aimg001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: tm2517542d1_def14aimg001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tm2517542d1_def14aimg002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tm2517542d1_def14aimg002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tm2517542d1_def14aimg003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: tm2517542d1_def14aimg003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>tm2517542d1_def14aimg004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: tm2517542d1_def14aimg004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>tm2517542d1_def14aimg005.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: tm2517542d1_def14aimg005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>tm2517542d1_def14aimg006.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: tm2517542d1_def14aimg006.jpg

</DOCUMENT>
</SEC-DOCUMENT>