<SEC-DOCUMENT>0001104659-25-109926.txt : 20251112
<SEC-HEADER>0001104659-25-109926.hdr.sgml : 20251112
<ACCEPTANCE-DATETIME>20251112094443
ACCESSION NUMBER:		0001104659-25-109926
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20251112
DATE AS OF CHANGE:		20251112

SUBJECT COMPANY:	

	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:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-34474
		FILM NUMBER:		251469971

	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

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GLENCORE INTERNATIONAL AG
		CENTRAL INDEX KEY:			0001032383
		ORGANIZATION NAME:           	
		EIN:				000000000

	FILING VALUES:
		FORM TYPE:		144

	BUSINESS ADDRESS:	
		ADDRESS IS A NON US LOCATION: 	YES
		STREET 1:		BAARERMATTSTRASSE 3
		STREET 2:		P O BOX 555 CH 6341 BAAR
		CITY:			BAAR
		PROVINCE COUNTRY:   	V8
		BUSINESS PHONE:		4142227722

	MAIL ADDRESS:	
		ADDRESS IS A NON US LOCATION: 	YES
		STREET 1:		BAARERMATTSTRASSE 3
		STREET 2:		P O BOX 555 CH 6341 BAAR
		CITY:			BAAR
		PROVINCE COUNTRY:   	V8
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <!-- Field: Pseudo-Tag; ID: Name; Data: GLENCORE INTERNATIONAL AG -->
          <cik>0001032383</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0000949157</issuerCik>
      <issuerName>CENTURY ALUMINUM CO</issuerName>
      <secFileNumber>001-34474</secFileNumber>
      <issuerAddress>
        <com:street1>One South Wacker Drive, Suite 1000</com:street1>
        <com:city>Chicago</com:city>
        <com:stateOrCountry>IL</com:stateOrCountry>
        <com:zipCode>60606</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>312-696-3101</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Glencore International AG</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>10% Stockholder</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common Stock (1)(2)</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Morgan Stanley &amp; Co. LLC</name>
        <address>
          <com:street1>1585 Broadway</com:street1>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10036</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>9000000</noOfUnitsSold>
      <aggregateMarketValue>297450000.00</aggregateMarketValue>
      <noOfUnitsOutstanding>93341969</noOfUnitsOutstanding>
      <approxSaleDate>11/10/2025</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <acquiredDate>12/15/2022</acquiredDate>
      <natureOfAcquisitionTransaction>See Note (3)</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>See Note (3)</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>27500000</amountOfSecuritiesAcquired>
      <paymentDate>12/15/2022</paymentDate>
      <natureOfPayment>See Note (3)</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <remarks>(1) Number of Shares or Other Units Outstanding is based on information provided by the Issuer in its Quarterly Report on Form 10-Q filed with the SEC on November 6, 2025. (2) Aggregate Market Value of shares based on a closing share price of $33.05 on November 7, 2025. (3) Securities to be sold were acquired via a transfer to Glencore International AG by Givolon Limited on December 15, 2022 for no consideration in connection with the termination of a 2017 financing and related pledge among Glencore AG, Ryfold Limited and Givolon.</remarks>
    <noticeSignature>
      <noticeDate>11/10/2025</noticeDate>
      <signature>/s/ John Burton</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
