    <SEC-DOCUMENT>0001193125-21-083042-index.html : 20210316
    <SEC-HEADER>0001193125-21-083042.hdr.sgml : 20210316
    <ACCEPTANCE-DATETIME>20210316172507
    ACCESSION NUMBER:		0001193125-21-083042
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		29
    CONFORMED PERIOD OF REPORT:	20210316
    FILED AS OF DATE:		20210316
    DATE AS OF CHANGE:		20210316

    FILER:

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

    	FILING VALUES:
    		FORM TYPE:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35931
    		FILM NUMBER:		21747134

    	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>6-K
    <SEQUENCE>1
    <FILENAME>d44014d6k.htm
    <DESCRIPTION>FORM 6-K
    <TEXT>
    Document 1 - file: d44014d6k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>d44014dex991.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: d44014dex991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>d44014dex992.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: d44014dex992.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.3
    <SEQUENCE>4
    <FILENAME>d44014dex993.htm
    <DESCRIPTION>EX-99.3
    <TEXT>
    Document 4 - file: d44014dex993.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g44014exb120x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g44014exb120x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g44014exb121x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g44014exb121x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g44014exb122x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g44014exb122x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g44014exb123x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g44014exb123x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g44014exb124x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g44014exb124x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g44014exb139x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g44014exb139x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g44014exb140x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g44014exb140x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g44014exb141x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g44014exb141x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>g44014exb150x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g44014exb150x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>g44014exb152x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g44014exb152x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>g44014exb153x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g44014exb153x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>g44014exb155x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g44014exb155x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>g44014exb159x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g44014exb159x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>g44014exc126x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g44014exc126x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>g44014exc127x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: g44014exc127x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>g44014exc128x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: g44014exc128x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>g44014exc129x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: g44014exc129x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>g44014exc130x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: g44014exc130x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>g44014exc145x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: g44014exc145x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>g44014exc146x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: g44014exc146x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>g44014exc156x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: g44014exc156x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>g44014exc158x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: g44014exc158x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>g44014exc159x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: g44014exc159x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>g44014exc161x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: g44014exc161x1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>g44014exc165x1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: g44014exc165x1.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>