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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): ~~February~~ 20April 15, 2025

Constellium SE

(Exact name of registrant as specified in its charter)

France	001-35931	Not Applicable
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

France

(State or Other Jurisdiction of Incorporation)

001-35931

(Commission File Number)

98-0667516

(I.R.S. Employer Identification No.)

300 East Lombard Street

Suite 1710

Baltimore, MD 21202

United States

(Address of principal executive office (US))

(443) 420-7861

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to section 12(b) of the Act

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Ordinary Shares		CSTM		New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in [sic] Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 28.0201. ~~Results~~Other ~~of Operations and Financial Condition~~Events

On ~~February 20~~April 15, 2025, Constellium SE (the “Company”) ~~issued~~published aits ~~press~~2025 ~~release~~Notice ~~announcing~~of ~~its~~Annual ~~financial~~General ~~results~~Meeting ~~for~~and Proxy Statement (the ~~fourth~~“Proxy ~~quarter~~Statement”) in connection with the Company’s Annual General Meeting of ~~2024~~shareholders, ~~and~~which ~~full~~will ~~year 2024~~be held on May 15, 2025, in Paris, France. A copy of the ~~press~~Proxy ~~release~~Statement, isthe ~~attached~~form ~~hereto~~of proxy (for shareholders on the U.S. Register), and the Notice of Internet Availability of Proxy Materials are furnished as Exhibit 99.1, Exhibit 99.2 and isExhibit 99.3, respectively, hereto, and are incorporated herein by reference.

The ~~Company~~information isin ~~also~~this ~~furnishing~~Item 8.01, anincluding ~~investor~~Exhibits ~~presentation~~99.1, ~~relating~~99.2 toand ~~its~~99.3, ~~fourth~~is ~~quarter~~being offurnished ~~2024~~and ~~(the~~shall not be deemed “~~Presentation~~filed”), ~~which~~for ~~will~~purposes beof ~~used~~Section 18 of by the ~~management team~~Securities ~~for~~Exchange ~~presentations~~Act toof ~~investors~~1934, ~~and~~as ~~others.~~amended, Anor ~~copy~~shall ofit ~~the~~be ~~Presentation~~deemed isincorporated ~~attached~~by ~~hereto~~reference asin ~~Exhibit~~any ~~99.2~~filing ~~and~~under ~~incorporated~~the ~~herein~~Securities byAct ~~reference.~~of ~~The~~1933, ~~Presentation~~as isamended, ~~also~~except ~~available~~as onshall ~~the~~be ~~Company’s~~expressly ~~website~~set ~~at www~~forth by specific reference in such filing.~~constellium.com.~~

In accordance with General Instruction B.2 of Form 8-K, the information in Item 2.02 of this Current Report on Form 8-K, including Exhibit 99.1 and Exhibit 99.2, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01.

Financial Statements and Exhibits

(d)

Exhibits

The following exhibits are furnished with this report on Form 8-K:

Exhibit No.		Description
99.1		Proxy Statement
99.2		2025 Annual General Meeting of Shareholders Proxy Card (for shareholders on the U.S. Register)
99.3		Additional Proxy Soliciting Materials - Notice of Internet Availability of Proxy Materials
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

Exhibit No.		Description
99.1		Press Release by Constellium SE dated February 20, 2025
99.2		Investor Presentation
104		The cover page of this Current Report on Form 8-K, formatted in Inline XBRL

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	CONSTELLIUM SE
	CONSTELLIUM SE (Registrant)
	(Registrant)
April 15, 2025	By:	/s/ Jack Guo
February 20, 2025	By:	/s/ Jack Guo
	Name:	Jack Guo
	Title:	Chief Financial Officer

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