Constellium (NYSE: CSTM) executive updates 195,716-share equity holding

Rhea-AI Filing Summary

CONSTELLIUM SE executive Philippe Hoffmann, President of A&T, reports beneficial ownership of 195,716 ordinary shares as of January 1, 2026. This amount consists of 135,425 ordinary shares held directly and 60,291 restricted stock units that remain subject to vesting. The amendment corrects Hoffmann’s original Form 3 and one prior Form 4, where these restricted stock units were inadvertently omitted, so it updates the disclosed size of his equity stake without reporting a new transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Hoffmann Philippe

Role President, A&T

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

Holdings After Transaction: Ordinary shares — 195,716 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

OMB APPROVAL

OMB Number:			3235-0104
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1. Name and Address of Reporting Person^*

Hoffmann Philippe

(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, A&T

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	195,716(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) 135,425 ordinary shares held by the Reporting Person as of January 1, 2026 and (ii) an aggregate of 60,291 restricted stock units which remain subject to vesting restrictions and which were inadvertently omitted from the Reporting Person's original Form 3 filing and one Form 4 filed by the Reporting Person prior to the date of this amendment.

Remarks:

	/s/ Kristine Carpenter, Attorney-in-Fact for Philippe Hoffmann	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 Philippe Hoffmann’s amended Form 3/A for CONSTELLIUM (CSTM) report?

The amended Form 3/A reports that Philippe Hoffmann beneficially owns 195,716 ordinary shares of CONSTELLIUM. This total combines directly held shares and restricted stock units, updating his previously reported equity position as an officer of the company.

How is Philippe Hoffmann’s 195,716-share position in CONSTELLIUM (CSTM) composed?

The 195,716-share position consists of 135,425 ordinary shares held by Hoffmann and 60,291 restricted stock units. The restricted stock units remain subject to vesting conditions, meaning they convert into shares only as those vesting requirements are satisfied.

Why did CONSTELLIUM’s (CSTM) Philippe Hoffmann file this Form 3/A amendment?

The amendment was filed to correct earlier disclosures that inadvertently omitted 60,291 restricted stock units. These units were missing from Hoffmann’s original Form 3 and one Form 4, so the amendment aligns his reported holdings with his actual equity awards.

Does Philippe Hoffmann’s Form 3/A for CONSTELLIUM (CSTM) show a new stock transaction?

The Form 3/A does not report a new buy or sell transaction. It classifies the entry as a holding update, refining the total number of shares and restricted stock units Hoffmann beneficially owns rather than disclosing fresh market activity.

What are the restricted stock units disclosed in CONSTELLIUM (CSTM) executive Hoffmann’s filing?

Hoffmann’s filing identifies 60,291 restricted stock units that are still subject to vesting restrictions. These units represent future rights to receive ordinary shares, contingent on meeting specified vesting conditions over time under CONSTELLIUM’s equity compensation arrangements.