Stephane Corre (CSTM) Form 3/A adds 14,050 RSUs to holdings

Rhea-AI Filing Summary

CONSTELLIUM SE filed an amended Form 3 for President, AS&I Stephane Corre to update his reported holdings. As of January 1, 2026, he beneficially owns 64,694 ordinary shares in total.

This amount consists of 50,644 ordinary shares held directly and 14,050 restricted stock units that remain subject to vesting restrictions. The amendment explains these RSUs were inadvertently omitted from Corre’s original Form 3 and from two Form 4 filings submitted before this amendment, so the change reflects a correction to previously reported ownership rather than a new transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Corre Stephane

Role President, AS&I

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

Holdings After Transaction: Ordinary shares — 64,694 shares (Direct)

Footnotes (1)

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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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OMB Number:			3235-0104
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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)
01/02/2026

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	64,694(1)	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:

1. Amount consists of (i) 50,644 ordinary shares held by the Reporting Person as of January 1, 2026 and (ii) an aggregate of 14,050 restricted stock units which remain subject to vesting restrictions and which were inadvertently omitted from the Reporting Person's original Form 3 filing and two Form 4 filed by the Reporting Person prior to the date of this amendment.

Remarks:

	/s/ Kristine Carpenter, Attorney-in-Fact for Stephane Corre	03/11/2026
	** 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 Constellium (CSTM) Form 3/A for Stephane Corre report?

The Form 3/A reports updated beneficial ownership for Stephane Corre. It shows a total of 64,694 ordinary shares as of January 1, 2026, combining directly held shares and restricted stock units subject to vesting.

How many Constellium (CSTM) ordinary shares does Stephane Corre hold directly?

Stephane Corre holds 50,644 ordinary shares directly as of January 1, 2026. This figure is part of his total reported beneficial ownership of 64,694 ordinary shares, which also includes restricted stock units that are still subject to vesting.

How many restricted stock units are included in Stephane Corre’s Constellium (CSTM) holdings?

His reported holdings include 14,050 restricted stock units. These RSUs remain subject to vesting restrictions and are counted within his total beneficial ownership of 64,694 ordinary shares reported as of January 1, 2026.

Why did Constellium (CSTM) file an amended Form 3 for Stephane Corre?

The amendment was filed because 14,050 restricted stock units were inadvertently omitted from Stephane Corre’s original Form 3 and from two earlier Form 4 filings. The Form 3/A corrects his total beneficial ownership as of January 1, 2026.

Does the Constellium (CSTM) Form 3/A show new share transactions by Stephane Corre?

The Form 3/A does not report new buy or sell transactions. It updates and corrects Stephane Corre’s previously reported holdings by adding 14,050 restricted stock units that were accidentally left out of earlier ownership reports.