Constellium (CSTM) SVP Niklaus Schild receives 3,355 restricted stock units

Rhea-AI Filing Summary

Schild Niklaus reported acquisition or exercise transactions in this Form 4 filing.

Constellium SE senior vice president and chief information and digital officer Niklaus Schild reported an equity compensation award. He received 3,355 restricted stock units tied to Constellium ordinary shares, granted at no purchase price. These units vest in full on March 12, 2029, subject to his continued employment.

Following this grant, Schild directly holds 38,703 ordinary shares of Constellium. The transaction reflects routine stock-based compensation rather than an open-market share purchase or sale.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Schild Niklaus

Role SVP CIO & CDO

Type	Security	Shares	Price	Value
Grant/Award	Ordinary shares	3,355	$0.00	--

Holdings After Transaction: Ordinary shares — 38,703 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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^*

Schild Niklaus

(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 CIO & CDO

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		3,355(1)	A	$0	38,703	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 Niklaus Schild	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 Niklaus Schild?

Constellium reported that SVP CIO & CDO Niklaus Schild received 3,355 restricted stock units as an equity award. The grant was recorded at a price of $0.00 per share, indicating stock-based compensation rather than a cash purchase in the market.

When do Niklaus Schild’s newly granted Constellium (CSTM) RSUs vest?

The 3,355 restricted stock units granted to Niklaus Schild vest in full on March 12, 2029. Vesting is conditioned on his continued employment with Constellium SE through that date, making this a long-term incentive award aligned with retention.

How many Constellium (CSTM) shares does Niklaus Schild hold after this Form 4 transaction?

After the reported award, Niklaus Schild directly holds 38,703 ordinary shares of Constellium SE. This figure reflects his beneficial ownership following the 3,355-share-equivalent restricted stock unit grant disclosed in the Form 4 filing.

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

The transaction was not a market purchase or sale. It is coded as an “A” transaction, meaning a grant or award. Schild received 3,355 restricted stock units at a stated price of $0.00 per share as part of his compensation package.

What role does Niklaus Schild hold at Constellium (CSTM) in this Form 4?

In this Form 4, Niklaus Schild is identified as an officer of Constellium SE, serving as senior vice president, chief information officer, and chief digital officer. The reported restricted stock unit grant is part of his equity-based executive compensation.

Does the Constellium (CSTM) Form 4 show any option exercises or derivative trades for Niklaus Schild?

No derivative transactions are shown for this event. The Form 4 derivative summary is empty, and the only reported transaction is the grant of 3,355 restricted stock units, classified as a non-derivative award of ordinary-share-linked equity.