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Constellium (CSTM) director Deslarzes adds 1,325 shares in open-market buy

Filing Impact
(Neutral)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Constellium SE director Jean-Christophe Deslarzes purchased additional shares of the company. He made an open-market purchase of 1,325 ordinary shares of CSTM at a price of $31.13 per share. Following this transaction, he directly owns 42,025 ordinary shares of Constellium SE.

Positive

  • None.

Negative

  • None.
Insider Deslarzes Jean-Christophe
Role null
Bought 1,325 shs ($41K)
Type Security Shares Price Value
Purchase Ordinary shares 1,325 $31.13 $41K
Holdings After Transaction: Ordinary shares — 42,025 shares (Direct, null)
Footnotes (1)
Shares purchased 1,325 shares Open-market purchase of ordinary shares
Purchase price $31.13 per share Price paid for CSTM ordinary shares
Post-transaction holdings 42,025 shares Director’s direct ownership after transaction
Net buy shares 1,325 shares Net change from this Form 4 transaction
Ordinary shares financial
"security_title: "Ordinary shares""
Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.
open-market purchase financial
"transaction_action: "open-market purchase""
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
Form 4 regulatory
"INSIDER FILING DATA (Form 4):"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
Deslarzes Jean-Christophe
(Last)(First)(Middle)
300 EAST LOMBARD STREET
SUITE 1710
(Street)
BALTIMORE MARYLAND 21202
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
CONSTELLIUM SE [ CSTM ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Ordinary shares05/01/2026P1,325A$31.1342,025D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
Remarks:
/s/ Kristine Carpenter, Attorney-in-Fact for Jean-Christophe Deslarzes05/01/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Constellium (CSTM) director Jean-Christophe Deslarzes report?

Director Jean-Christophe Deslarzes reported an open-market purchase of 1,325 Constellium ordinary shares. The shares were bought at a price of $31.13 each, increasing his direct ownership position in CSTM to a total of 42,025 shares after the transaction.

How many Constellium (CSTM) shares did Jean-Christophe Deslarzes buy and at what price?

Jean-Christophe Deslarzes bought 1,325 ordinary shares of Constellium in an open-market transaction. The reported purchase price was $31.13 per share, as disclosed in the Form 4 insider filing for the transaction dated May 1, 2026.

What is Jean-Christophe Deslarzes’ total Constellium (CSTM) shareholding after this Form 4 trade?

After the reported purchase, Jean-Christophe Deslarzes directly holds 42,025 ordinary shares of Constellium. This post-transaction ownership figure comes from the Form 4 disclosure and reflects his direct holdings following the 1,325-share open-market acquisition.

Was the Constellium (CSTM) insider transaction a buy or a sell?

The Constellium insider transaction was a buy. Director Jean-Christophe Deslarzes executed an open-market purchase of 1,325 ordinary shares at $31.13 per share, increasing his direct ownership to a total of 42,025 Constellium shares after the transaction.

Did the Constellium (CSTM) Form 4 involve any derivative securities or options?

No derivative securities or options were reported in this Form 4. The filing only shows a non-derivative open-market purchase of 1,325 ordinary shares of Constellium, with no accompanying option exercises or other derivative transactions disclosed in the data.