Constellium (CSTM) SVP granted 5,469 restricted stock units as equity pay

Rhea-AI Filing Summary

CONSTELLIUM SE senior vice president Ludovic Piquier reported an acquisition of 5,469 ordinary shares through a grant of restricted stock units. The units were granted at no cash cost and will vest in full on March 12, 2029, conditioned on his continued employment.

Following this equity award, Piquier directly holds 242,713 ordinary shares. This filing reflects a compensation-related stock grant rather than an open-market purchase or sale, increasing his long-term ownership stake in the company.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Piquier Ludovic

(Last) (First) (Middle)

300 EAST LOMBARD STREET

SUITE 1710

(Street)

BALTIMORE MD 21202

(City) (State) (Zip)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP Manuf Excellence & CTO

3. Date of Earliest Transaction (Month/Day/Year)
03/12/2026

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary shares	03/12/2026	03/12/2026	A		5,469(1)	A	$0	242,713	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the grant of restricted stock units of Constellium SE, which vest in full on March 12, 2029, subject to the Reporting Person's continued employment.

Remarks:

	/s/ Kristine Carpenter, Attorney-in-Fact for Ludovic Piquier	03/16/2026
	** 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 4 (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 transaction did CONSTELLIUM (CSTM) report for Ludovic Piquier?

CONSTELLIUM reported that SVP Ludovic Piquier received 5,469 ordinary shares through a grant of restricted stock units. The award was made at no cash cost and reflects compensation, not an open-market trade, increasing his equity stake in the company.

Was the CONSTELLIUM (CSTM) insider transaction a market purchase or sale?

The transaction was not a market purchase or sale. Ludovic Piquier received 5,469 shares as a grant of restricted stock units, awarded at a price of $0.00 per share, as part of his compensation rather than through exchange trading.

When do Ludovic Piquier’s CONSTELLIUM (CSTM) restricted stock units vest?

The restricted stock units granted to Ludovic Piquier vest in full on March 12, 2029. Vesting is subject to his continued employment with CONSTELLIUM SE through that date, aligning the equity award with long-term service at the company.

How many CONSTELLIUM (CSTM) shares does Ludovic Piquier hold after this grant?

After the reported grant, Ludovic Piquier directly holds 242,713 ordinary shares of CONSTELLIUM SE. This total includes the effect of the 5,469-share restricted stock unit award disclosed in the filing, reflecting his consolidated direct ownership position.

What does transaction code A mean in this CONSTELLIUM (CSTM) Form 4?

Transaction code A on the Form 4 indicates a grant, award, or other acquisition of securities. In this case, it represents the award of 5,469 restricted stock units to Ludovic Piquier as compensation, rather than a purchase on the open market.

Is the CONSTELLIUM (CSTM) insider grant contingent on any conditions?

Yes. The restricted stock units granted to Ludovic Piquier vest only if he remains employed by CONSTELLIUM SE through March 12, 2029. This employment condition ties the equity award to his ongoing service at the company over the vesting period.