<SEC-DOCUMENT>0001563411-25-000026-index.html : 20251029
<SEC-HEADER>0001563411-25-000026.hdr.sgml : 20251029
<ACCEPTANCE-DATETIME>20251029061904
ACCESSION NUMBER:		0001563411-25-000026
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		55
CONFORMED PERIOD OF REPORT:	20251029
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20251029
DATE AS OF CHANGE:		20251029

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CONSTELLIUM SE
		CENTRAL INDEX KEY:			0001563411
		STANDARD INDUSTRIAL CLASSIFICATION:	SECONDARY SMELTING & REFINING OF NONFERROUS METALS [3341]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				000000000
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35931
		FILM NUMBER:		251426671

	BUSINESS ADDRESS:	
		STREET 1:		WASHINGTON PLAZA
		STREET 2:		40-44 RUE WASHINGTON
		CITY:			PARIS
		STATE:			I0
		ZIP:			75008
		BUSINESS PHONE:		33-1-73-01-46-51

	MAIL ADDRESS:	
		STREET 1:		WASHINGTON PLAZA
		STREET 2:		40-44 RUE WASHINGTON
		CITY:			PARIS
		STATE:			I0
		ZIP:			75008

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Constellium SE
		DATE OF NAME CHANGE:	20190628

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Constellium N.V.
		DATE OF NAME CHANGE:	20130521

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Constellium Holdco B.V.
		DATE OF NAME CHANGE:	20121130
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>cstm-20251029.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: cstm-20251029.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>a2025-q3xearningspressre.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: a2025-q3xearningspressre.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>a2025-q3xearningspresent.htm
<DESCRIPTION>EX-99.2
<TEXT>
Document 3 - file: a2025-q3xearningspresent.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>4
<FILENAME>cstm-20251029.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
<TEXT>
Document 4 - file: cstm-20251029.xsd

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>5
<FILENAME>cstm-20251029_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
<TEXT>
Document 5 - file: cstm-20251029_lab.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>6
<FILENAME>cstm-20251029_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
<TEXT>
Document 6 - file: cstm-20251029_pre.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>a2025-q3xearningspresent001.jpg
<TEXT>
Document 7 - file: a2025-q3xearningspresent001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>a2025-q3xearningspresent002.jpg
<TEXT>
Document 8 - file: a2025-q3xearningspresent002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>a2025-q3xearningspresent003.jpg
<TEXT>
Document 9 - file: a2025-q3xearningspresent003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>a2025-q3xearningspresent004.jpg
<TEXT>
Document 10 - file: a2025-q3xearningspresent004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>a2025-q3xearningspresent005.jpg
<TEXT>
Document 11 - file: a2025-q3xearningspresent005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>a2025-q3xearningspresent006.jpg
<TEXT>
Document 12 - file: a2025-q3xearningspresent006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>a2025-q3xearningspresent007.jpg
<TEXT>
Document 13 - file: a2025-q3xearningspresent007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>a2025-q3xearningspresent008.jpg
<TEXT>
Document 14 - file: a2025-q3xearningspresent008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>a2025-q3xearningspresent009.jpg
<TEXT>
Document 15 - file: a2025-q3xearningspresent009.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>a2025-q3xearningspresent010.jpg
<TEXT>
Document 16 - file: a2025-q3xearningspresent010.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>a2025-q3xearningspresent011.jpg
<TEXT>
Document 17 - file: a2025-q3xearningspresent011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>a2025-q3xearningspresent012.jpg
<TEXT>
Document 18 - file: a2025-q3xearningspresent012.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>19
<FILENAME>a2025-q3xearningspresent013.jpg
<TEXT>
Document 19 - file: a2025-q3xearningspresent013.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>20
<FILENAME>a2025-q3xearningspresent014.jpg
<TEXT>
Document 20 - file: a2025-q3xearningspresent014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>21
<FILENAME>a2025-q3xearningspresent015.jpg
<TEXT>
Document 21 - file: a2025-q3xearningspresent015.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>22
<FILENAME>a2025-q3xearningspresent016.jpg
<TEXT>
Document 22 - file: a2025-q3xearningspresent016.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>23
<FILENAME>a2025-q3xearningspresent017.jpg
<TEXT>
Document 23 - file: a2025-q3xearningspresent017.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>24
<FILENAME>a2025-q3xearningspresent018.jpg
<TEXT>
Document 24 - file: a2025-q3xearningspresent018.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>25
<FILENAME>a2025-q3xearningspresent019.jpg
<TEXT>
Document 25 - file: a2025-q3xearningspresent019.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>26
<FILENAME>a2025-q3xearningspresent020.jpg
<TEXT>
Document 26 - file: a2025-q3xearningspresent020.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>27
<FILENAME>a2025-q3xearningspresent021.jpg
<TEXT>
Document 27 - file: a2025-q3xearningspresent021.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>28
<FILENAME>a2025-q3xearningspresent022.jpg
<TEXT>
Document 28 - file: a2025-q3xearningspresent022.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>29
<FILENAME>a2025-q3xearningspresent023.jpg
<TEXT>
Document 29 - file: a2025-q3xearningspresent023.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>30
<FILENAME>a2025-q3xearningspressre001.jpg
<TEXT>
Document 30 - file: a2025-q3xearningspressre001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>31
<FILENAME>a2025-q3xearningspressre002.jpg
<TEXT>
Document 31 - file: a2025-q3xearningspressre002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>32
<FILENAME>a2025-q3xearningspressre003.jpg
<TEXT>
Document 32 - file: a2025-q3xearningspressre003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>33
<FILENAME>a2025-q3xearningspressre004.jpg
<TEXT>
Document 33 - file: a2025-q3xearningspressre004.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>34
<FILENAME>a2025-q3xearningspressre005.jpg
<TEXT>
Document 34 - file: a2025-q3xearningspressre005.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>35
<FILENAME>a2025-q3xearningspressre006.jpg
<TEXT>
Document 35 - file: a2025-q3xearningspressre006.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>36
<FILENAME>a2025-q3xearningspressre007.jpg
<TEXT>
Document 36 - file: a2025-q3xearningspressre007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>37
<FILENAME>a2025-q3xearningspressre008.jpg
<TEXT>
Document 37 - file: a2025-q3xearningspressre008.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>38
<FILENAME>a2025-q3xearningspressre009.jpg
<TEXT>
Document 38 - file: a2025-q3xearningspressre009.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>39
<FILENAME>a2025-q3xearningspressre010.jpg
<TEXT>
Document 39 - file: a2025-q3xearningspressre010.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>40
<FILENAME>a2025-q3xearningspressre011.jpg
<TEXT>
Document 40 - file: a2025-q3xearningspressre011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>41
<FILENAME>a2025-q3xearningspressre012.jpg
<TEXT>
Document 41 - file: a2025-q3xearningspressre012.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>42
<FILENAME>a2025-q3xearningspressre013.jpg
<TEXT>
Document 42 - file: a2025-q3xearningspressre013.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>43
<FILENAME>a2025-q3xearningspressre014.jpg
<TEXT>
Document 43 - file: a2025-q3xearningspressre014.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>44
<FILENAME>a2025-q3xearningspressre015.jpg
<TEXT>
Document 44 - file: a2025-q3xearningspressre015.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>45
<FILENAME>a2025-q3xearningspressre016.jpg
<TEXT>
Document 45 - file: a2025-q3xearningspressre016.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>46
<FILENAME>a2025-q3xearningspressre017.jpg
<TEXT>
Document 46 - file: a2025-q3xearningspressre017.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>47
<FILENAME>a2025-q3xearningspressre018.jpg
<TEXT>
Document 47 - file: a2025-q3xearningspressre018.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>49
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 49 - file: R1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>50
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 50 - file: Show.js

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>51
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 51 - file: report.css

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>53
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 53 - file: FilingSummary.html

Document 53 - RAW XML: FilingSummary.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>55
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 55 - file: MetaLinks.json

</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>56
<FILENAME>0001563411-25-000026-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 56 - file: 0001563411-25-000026-xbrl.zip

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>57
<FILENAME>cstm-20251029_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 57 - file: cstm-20251029_htm.html

Document 57 - RAW XML: cstm-20251029_htm.xml

</DOCUMENT>
</SEC-DOCUMENT>