<SEC-DOCUMENT>0000949157-20-000067-index.html : 20200522
<SEC-HEADER>0000949157-20-000067.hdr.sgml : 20200522
<ACCEPTANCE-DATETIME>20200522162927
ACCESSION NUMBER:		0000949157-20-000067
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20200522
DATE AS OF CHANGE:		20200522
EFFECTIVENESS DATE:		20200522

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CENTURY ALUMINUM CO
		CENTRAL INDEX KEY:			0000949157
		STANDARD INDUSTRIAL CLASSIFICATION:	PRIMARY PRODUCTION OF ALUMINUM [3334]
		IRS NUMBER:				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:		20906329

	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>a2020additionalproxymateri.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: a2020additionalproxymateri.htm

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

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>centuryaluminumlogoa01.jpg
<TEXT>
Document 3 - file: centuryaluminumlogoa01.jpg

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

</DOCUMENT>
</SEC-DOCUMENT>