Constellium SE (CSTM) director Wiebke Weiler files insider ownership showing 0 shares

Rhea-AI Filing Summary

Constellium SE director Wiebke Weiler filed an initial insider ownership report as of 01/01/2026. The filing shows that she beneficially owns 0 ordinary shares of Constellium SE in direct form and reports no derivative securities such as options or warrants. The document is signed by Kristine Carpenter as attorney-in-fact for Wiebke Weiler on 01/02/2026.

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^*

Weiler Wiebke

(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	0	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 Wiebke Weiler	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 the latest insider ownership filing reveal for Constellium SE (CSTM)?

The filing shows that director Wiebke Weiler beneficially owns 0 ordinary shares of Constellium SE and has no reported derivative securities.

What is the reported ownership of Constellium SE (CSTM) director Wiebke Weiler?

Director Wiebke Weiler reports beneficial ownership of 0 ordinary shares of Constellium SE, held in direct form.

Does the Constellium SE (CSTM) director have any stock options or other derivative securities?

The report’s derivative securities table is blank, indicating no derivative securities such as options, warrants, or convertible instruments reported for Wiebke Weiler.

What is the date of the event covered by this Constellium SE (CSTM) insider filing?

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

What is the relationship of the reporting person to Constellium SE (CSTM)?

The reporting person, Wiebke Weiler, is identified as a Director of Constellium SE.

Who signed the Constellium SE (CSTM) insider ownership form?

The form is signed by /s/ Kristine Carpenter as Attorney-in-Fact for Wiebke Weiler on 01/02/2026.