Was Marcus Becker’s Constellium (CSTM) award an open-market share purchase?

No, the transaction was not an open-market purchase. It is classified as a grant or award acquisition of 3,938 restricted stock units, issued at no cash price as part of compensation, rather than a voluntary buy or sell on the stock market.

Constellium SVP granted 3,938 restricted stock units

Becker Marcus reported acquisition or exercise transactions in this Form 4 filing.

Accepted by SEC EDGAR 03/16/2026 - 09:45 AM EDT

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Form Type

Rhea-AI Filing Summary

Becker Marcus reported acquisition or exercise transactions in this Form 4 filing.

Constellium SE reported that senior vice president and chief procurement officer Marcus Becker received a grant of 3,938 restricted stock units representing ordinary shares. These units were awarded at no cash cost and vest in full on March 12, 2029, subject to his continued employment. Following this compensation-related award, Becker directly owns 37,175 ordinary shares.

Insider Trade Summary

Grant/Award: 3,938 shares

Grant/Award 1 txn

Insider Becker Marcus

Role SVP CPO

Type	Security	Shares	Price	Value
Grant/Award	Ordinary shares	3,938	$0.00	$0.00

Holdings After Transaction: Ordinary shares — 37,175 shares (Direct)

Holdings Before and After: Ordinary shares, 33,237 to 37,175 shares (Direct)

Footnotes (1)

F1. 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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Constellium (CSTM) report for Marcus Becker?

Constellium reported a grant of 3,938 restricted stock units to SVP and chief procurement officer Marcus Becker. The award is a compensation-related acquisition, not an open-market purchase or sale, and increases his direct holdings to 37,175 ordinary shares after the transaction.

When do Marcus Becker’s 3,938 Constellium (CSTM) RSUs vest?

The 3,938 restricted stock units granted to Marcus Becker vest in full on March 12, 2029. Vesting is contingent on his continued employment with Constellium SE through that date, making the award a long-term incentive aligned with multi-year service at the company.

How many Constellium (CSTM) shares does Marcus Becker own after this Form 4?

After this grant, Marcus Becker directly owns 37,175 ordinary shares of Constellium SE. The Form 4 shows the 3,938-unit restricted stock grant and states this post-transaction total, reflecting his updated equity position following the compensation award.

What conditions apply to Marcus Becker’s Constellium (CSTM) restricted stock units?

The restricted stock units vest only if Marcus Becker remains employed by Constellium SE through March 12, 2029. This continued-employment requirement means the award is designed as a retention and incentive tool, aligning his interests with the company over several years.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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^*

Becker Marcus

(Last)

(First)

(Middle)

300 EAST LOMBARD STREET

SUITE 1710

(Street)

BALTIMORE

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 CPO

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary shares	03/12/2026	03/12/2026	A		3,938⁽¹⁾	A	$0	37,175	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 Marcus Becker	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.

Source: View Original Filing on SEC EDGAR