<SEC-DOCUMENT>0001104659-22-127446-index.html : 20221216
<SEC-HEADER>0001104659-22-127446.hdr.sgml : 20221216
<ACCEPTANCE-DATETIME>20221215180225
ACCESSION NUMBER:		0001104659-22-127446
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20221216
DATE AS OF CHANGE:		20221215
GROUP MEMBERS:		OCORIAN LTD
GROUP MEMBERS:		OCORIAN LTD IN ITS CAPACITY AS TRUSTEE OF THE RYFOLD TRUST
GROUP MEMBERS:		RYFOLD LTD

SUBJECT COMPANY:	

	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:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-47307
		FILM NUMBER:		221465928

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Givolon Ltd
		CENTRAL INDEX KEY:			0001716572
		IRS NUMBER:				981379512
		STATE OF INCORPORATION:			Y9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	BUSINESS ADDRESS:	
		STREET 1:		26 NEW STREET
		CITY:			ST HELIER
		STATE:			Y9
		ZIP:			JE2 3RA
		BUSINESS PHONE:		44 1534 844 844

	MAIL ADDRESS:	
		STREET 1:		26 NEW STREET
		CITY:			ST HELIER
		STATE:			Y9
		ZIP:			JE2 3RA
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>tm2232820d4_sc13da.htm
<DESCRIPTION>SC 13D/A
<TEXT>
Document 1 - file: tm2232820d4_sc13da.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>tm2232820d4_ex-1.htm
<DESCRIPTION>EXHIBIT 1
<TEXT>
Document 2 - file: tm2232820d4_ex-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.12
<SEQUENCE>3
<FILENAME>tm2232820d4_ex-12.htm
<DESCRIPTION>EXHIBIT 12
<TEXT>
Document 3 - file: tm2232820d4_ex-12.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>image_001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: image_001.jpg

</DOCUMENT>
</SEC-DOCUMENT>