Constellium SE (CSTM) director files initial report of 41 shares owned

Rhea-AI Filing Summary

Constellium SE director Jean-Francois Verdier has filed an initial beneficial ownership report showing a small personal stake in the company. As of 01/01/2026, he beneficially owns 41 ordinary shares of Constellium SE, held directly. The filing is made by a single reporting person and lists no derivative securities such as options or warrants.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Verdier Jean-Francois

Role Director

Type	Security	Shares	Price	Value
holding	Ordinary shares	--	--	--

Holdings After Transaction: Ordinary shares — 41 shares (Direct)

Footnotes (1)

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Verdier Jean-Francois

(Last) (First) (Middle)

300 EAST LOMBARD STREET

SUITE 1710

(Street)

BALTIMORE MD 21202

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/01/2026

3. Issuer Name and Ticker or Trading Symbol
CONSTELLIUM SE [ CSTM ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Ordinary shares	41	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Kristine Carpenter, Attorney-in-Fact for Jean-Francois Verdier	01/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider ownership did Constellium SE (CSTM) disclose in this filing?

The filing reports that director Jean-Francois Verdier beneficially owns 41 ordinary shares of Constellium SE.

What is the effective date of the insider ownership reported for CSTM?

The date of the event requiring the statement is 01/01/2026, which is the reference date for the reported ownership.

What role does the reporting person hold at Constellium SE (CSTM)?

The reporting person is identified as a Director of Constellium SE and is not marked as a 10% owner or officer.

Are the 41 Constellium SE (CSTM) shares held directly or indirectly?

The 41 ordinary shares are reported as held in direct ownership form.

Does this Constellium SE (CSTM) filing report any derivative securities?

Table II, which would list derivative securities, does not show any entries, indicating no derivative securities are reported in this filing.

Who signed the insider ownership filing for Constellium SE (CSTM)?

The document is signed by /s/ Kristine Carpenter as Attorney-in-Fact for Jean-Francois Verdier, dated 01/02/2026.