<SEC-DOCUMENT>0001552781-25-000153-index.html : 20250425
<SEC-HEADER>0001552781-25-000153.hdr.sgml : 20250425
<ACCEPTANCE-DATETIME>20250425160552
ACCESSION NUMBER:		0001552781-25-000153
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		65
CONFORMED PERIOD OF REPORT:	20250616
FILED AS OF DATE:		20250425
DATE AS OF CHANGE:		20250425

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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34474
		FILM NUMBER:		25873912

	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>DEF 14A
<SEQUENCE>1
<FILENAME>e24450_cenx-def14a.htm
<TEXT>
Document 1 - file: e24450_cenx-def14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>e24450_001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: e24450_001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>e24450_002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: e24450_002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>e24450_003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: e24450_003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>e24450_004.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: e24450_004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>e24450_047.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: e24450_047.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>e24450_005.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: e24450_005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>e24450_006.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: e24450_006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>e24450_007.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: e24450_007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>e24450_008.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: e24450_008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>e24450_009.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: e24450_009.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>e24450_010.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: e24450_010.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>e24450_011.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: e24450_011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>e24450_012.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: e24450_012.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>e24450_013.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: e24450_013.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>e24450_014.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: e24450_014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>e24450_015.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: e24450_015.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>e24450_016.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: e24450_016.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>e24450_017.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 19 - file: e24450_017.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>e24450_018.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 20 - file: e24450_018.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>e24450_019.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 21 - file: e24450_019.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>e24450_020.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 22 - file: e24450_020.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>e24450_021.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 23 - file: e24450_021.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>e24450_022.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 24 - file: e24450_022.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>25
<FILENAME>e24450_023.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 25 - file: e24450_023.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>26
<FILENAME>e24450_024.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 26 - file: e24450_024.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>27
<FILENAME>e24450_025.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 27 - file: e24450_025.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>28
<FILENAME>e24450_026.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 28 - file: e24450_026.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>29
<FILENAME>e24450_027.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 29 - file: e24450_027.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>30
<FILENAME>e24450_028.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 30 - file: e24450_028.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>31
<FILENAME>e24450_029.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 31 - file: e24450_029.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>32
<FILENAME>e24450_030.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 32 - file: e24450_030.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>33
<FILENAME>e24450_031.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 33 - file: e24450_031.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>34
<FILENAME>e24450_032.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 34 - file: e24450_032.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>35
<FILENAME>e24450_033.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 35 - file: e24450_033.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>36
<FILENAME>e24450_034.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 36 - file: e24450_034.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>37
<FILENAME>e24450_035.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 37 - file: e24450_035.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>38
<FILENAME>e24450_036.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 38 - file: e24450_036.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>39
<FILENAME>e24450_037.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 39 - file: e24450_037.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>40
<FILENAME>e24450_038.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 40 - file: e24450_038.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>41
<FILENAME>e24450_039.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 41 - file: e24450_039.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>42
<FILENAME>e24450_041.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 42 - file: e24450_041.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>43
<FILENAME>e24450_041a.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 43 - file: e24450_041a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>44
<FILENAME>e24450_042.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 44 - file: e24450_042.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>45
<FILENAME>e24450_043.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 45 - file: e24450_043.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>46
<FILENAME>e24450_044.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 46 - file: e24450_044.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>47
<FILENAME>e24450_045.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 47 - file: e24450_045.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>48
<FILENAME>e24450_046.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 48 - file: e24450_046.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>49
<FILENAME>e24450_proxy-card1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 49 - file: e24450_proxy-card1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>50
<FILENAME>e24450_proxy-card2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 50 - file: e24450_proxy-card2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>51
<FILENAME>cenx-20251231.xsd
<DESCRIPTION>XBRL SCHEMA FILE
<TEXT>
Document 51 - file: cenx-20251231.xsd

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.DEF
<SEQUENCE>52
<FILENAME>cenx-20251231_def.xml
<DESCRIPTION>XBRL DEFINITION FILE
<TEXT>
Document 52 - file: cenx-20251231_def.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>53
<FILENAME>cenx-20251231_lab.xml
<DESCRIPTION>XBRL LABEL FILE
<TEXT>
Document 53 - file: cenx-20251231_lab.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>54
<FILENAME>cenx-20251231_pre.xml
<DESCRIPTION>XBRL PRESENTATION FILE
<TEXT>
Document 54 - file: cenx-20251231_pre.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>56
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 56 - file: R1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>57
<FILENAME>R2.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 57 - file: R2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>58
<FILENAME>R3.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 58 - file: R3.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>59
<FILENAME>R4.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 59 - file: R4.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>60
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 60 - file: Show.js

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>61
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 61 - file: report.css

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>63
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 63 - file: FilingSummary.html

Document 63 - RAW XML: FilingSummary.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>65
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 65 - file: MetaLinks.json

</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>66
<FILENAME>0001552781-25-000153-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 66 - file: 0001552781-25-000153-xbrl.zip

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>67
<FILENAME>e24450_cenx-def14a_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 67 - file: e24450_cenx-def14a_htm.html

Document 67 - RAW XML: e24450_cenx-def14a_htm.xml

</DOCUMENT>
</SEC-DOCUMENT>