Millennium Reports 5.3% Stake in Constellium SE (7.45M Shares)

Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander jointly report beneficial ownership of 7,453,770 ordinary shares of Constellium SE, representing 5.3% of the class.

Rhea-AI Filing Summary

Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander jointly report beneficial ownership of 7,453,770 ordinary shares of Constellium SE, representing 5.3% of the class. The filing shows shared voting and shared dispositive power over these shares and records no sole voting or dispositive power by any reporting person. The statement is a joint filing and includes a joint filing agreement among the three reporting persons. The filers state the holdings were not acquired to change or influence control of the issuer.

Positive

• Material disclosure of 7,453,770 shares (5.3% of class) enhances market transparency
• Joint filing agreement clarifies reporting coordination among Millennium entities and Israel A. Englander
• Shared voting/dispositive power disclosed, providing clarity on control structure

Negative

• No sole voting or dispositive power reported, indicating the filer does not claim unilateral control

Insights

Financial Analyst

TL;DR: A well-known asset manager reports a 5.3% passive stake via shared control, a material disclosure but not a change in control.

The filing discloses a material passive position of 7,453,770 ordinary shares (5.3%). Shared voting and dispositive powers indicate the position is held across entities subject to the manager's voting control or discretion. This is a standard beneficial ownership disclosure for a sizeable institutional holder and provides transparency on potential shareholder concentration without indicating an intent to alter corporate control.

Corporate Governance Expert

TL;DR: Joint filing clarifies ownership and control lines; absence of sole power suggests no single-party control.

The schedule clarifies that the reported shares are under shared voting and dispositive authority among Millennium-related entities and Israel A. Englander. The joint filing agreement formalizes the reporting relationship. Because no sole voting or dispositive power is claimed, the disclosure signals influence without unilateral control, relevant for governance and activist risk assessments.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Constellium SE (CSTM) shares do Millennium entities and Israel A. Englander report owning?

They report beneficial ownership of 7,453,770 ordinary shares, representing 5.3% of the class.

Do the filers claim sole voting or dispositive power over the CSTM shares?

No. The filing shows 0 sole voting power and 0 sole dispositive power; the power is shared.

What type of filing was submitted for Constellium SE (CSTM)?

A Schedule 13G reporting beneficial ownership above 5% under the applicable rule for passive or qualifying institutional investors.

Does the filing indicate an intent to influence control of Constellium SE?

The filers certify that the securities were not acquired and are not held to change or influence control of the issuer.

Which entities filed jointly for this disclosure?

The filing was made jointly by Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 09/16/2025 - 04:17 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Constellium SE

(Name of Issuer)

Ordinary Shares

(Title of Class of Securities)

F21107101

(CUSIP Number)

09/10/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. F21107101

1

Names of Reporting Persons

Millennium Management LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 7,453,770.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 7,453,770.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

7,453,770.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.3 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP No. F21107101

1

Names of Reporting Persons

Millennium Group Management LLC

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 7,453,770.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 7,453,770.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

7,453,770.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.3 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP No. F21107101

1

Names of Reporting Persons

Israel A. Englander

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 7,453,770.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 7,453,770.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

7,453,770.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.3 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Constellium SE
(b)	Address of issuer's principal executive offices: 300 East Lombard Street, Suite 1710, Baltimore, Maryland 21202
Item 2.
(a)	Name of person filing: Millennium Management LLC Millennium Group Management LLC Israel A. Englander
(b)	Address or principal business office or, if none, residence: Millennium Management LLC 399 Park Avenue New York, New York 10022 Millennium Group Management LLC 399 Park Avenue New York, New York 10022 Israel A. Englander c/o Millennium Management LLC 399 Park Avenue New York, New York 10022
(c)	Citizenship: Millennium Management LLC - Delaware Millennium Group Management LLC - Delaware Israel A. Englander - United States
(d)	Title of class of securities: Ordinary Shares
(e)	CUSIP No.: F21107101
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: See response to Item 9 on each cover page.
(b)	Percent of class: See response to Item 11 on each cover page.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See response to Item 5 on each cover page.
	(ii) Shared power to vote or to direct the vote: See response to Item 6 on each cover page.
	(iii) Sole power to dispose or to direct the disposition of: See response to Item 7 on each cover page.
	(iv) Shared power to dispose or to direct the disposition of: See response to Item 8 on each cover page. The securities disclosed herein as potentially beneficially owned by Millennium Management LLC, Millennium Group Management LLC and Mr. Englander are held by entities subject to voting control and investment discretion by Millennium Management LLC and/or other investment managers that may be controlled by Millennium Group Management LLC (the managing member of Millennium Management LLC) and Mr. Englander (the sole voting trustee of the managing member of Millennium Group Management LLC). The foregoing should not be construed in and of itself as an admission by Millennium Management LLC, Millennium Group Management LLC or Mr. Englander as to beneficial ownership of the securities held by such entities.
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(K), so indicate under Item 3(k) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group. See Exhibit I
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Millennium Management LLC

Signature:	/s/ Gil Raviv
Name/Title:	Gil Raviv, Global General Counsel
Date:	09/15/2025

Millennium Group Management LLC

Signature:	/s/ Gil Raviv
Name/Title:	Gil Raviv, Global General Counsel
Date:	09/15/2025

Israel A. Englander

Signature:	/s/ Israel A. Englander
Name/Title:	Israel A. Englander
Date:	09/15/2025

Exhibit Information

Exhibit I: Joint Filing Agreement, dated as of September 15, 2025, by and among Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander.