Constellium SE (CSTM) officer Stephane Corre files initial 50,644-share holding

Rhea-AI Filing Summary

Constellium SE insider Stephane Corre filed an initial ownership report as an officer of the company, listed as President, AS&I. As of the event date of 01/01/2026, he beneficially owned 50,644 ordinary shares of Constellium SE common stock in direct form. This filing establishes his starting ownership position as a company officer under securities reporting rules.

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^*

Corre Stephane

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, AS&I

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	50,644	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 Stephane Corre	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 does this Form 3 filing disclose for Constellium SE (CSTM)?

The filing discloses that company officer Stephane Corre, President, AS&I, beneficially owns 50,644 ordinary shares of Constellium SE, held directly.

Who is the reporting person in this Constellium SE (CSTM) Form 3?

The reporting person is Stephane Corre, who is identified as an officer of Constellium SE with the title President, AS&I.

How many Constellium SE (CSTM) shares does the insider report owning?

Stephane Corre reports beneficial ownership of 50,644 ordinary shares of Constellium SE in direct ownership form.

What is the ownership form reported for the Constellium SE (CSTM) shares?

The 50,644 ordinary shares reported by Stephane Corre are held in direct (D) ownership, with no indirect ownership listed.

Are any derivative securities reported for the Constellium SE (CSTM) insider?

The table for derivative securities is included but shows no entries, indicating no derivative securities reported as beneficially owned in this filing.

What is the event date for this Constellium SE (CSTM) insider ownership report?

The date of the event requiring this ownership statement is listed as 01/01/2026.