Stephane Corre sells 6,000 Class A shares (NYSE: CSTM)

Rhea-AI Filing Summary

Constellium SE-related insider reported proposed sales of Class A shares totaling 6,000 shares by Stephane Corre.

The filing lists four sales dated 11/25/2025 (800 shares), 11/26/2025 (1,000), 12/01/2025 (1,000) and 02/25/2026 (3,200). Each sale row shows an associated numeric value alongside the share counts consistent with reported trade entries.

Insights

Corporate Governance Analyst

Insider sales are routine disclosures showing recent dispositions by a named individual.

The excerpt records four Class A share dispositions by Stephane Corre with specific share counts and dates: 11/25/2025 (800), 11/26/2025 (1,000), 12/01/2025 (1,000) and 02/25/2026 (3,200). These entries are typical notifications under the applicable rules.

Market impact depends on timing and context not provided here; subsequent transaction reports or trading data would clarify execution method and pricing.

Securities Compliance Counsel

The Form 144-style disclosure documents proposed sales and preserves regulatory notice obligations.

The rows list the seller, security class, dates and share quantities, which satisfy the recordkeeping elements of a sale notice. The filing names an intermediary and exchange detail consistent with standard practice.

Regulatory consequences depend on instruction compliance and actual execution; additional filings (sale confirmations or Form 4/Form 5) may follow to report completed transactions.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	J.P. Morgan Securities LLC 270 Park Ave 10th Floor New York NY 10017	3000	74066.21	137801779	02/27/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	05/21/2021	PSU Issuance	Constellium SE (issuer)			709	03/02/2026	Equity Compensation
Common Stock	05/21/2021	RSU Issuance	Constellium SE (issuer)			2024	03/02/2026	Equity Compensation
Common Stock	04/01/2022	RSU Issuance	Constellium SE (issuer)			267	03/02/2026	Equity Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Stephane Corre 14 TER Rue du docteur Teilhol Aubiere I0 63170	Class A Shares	11/25/2025	800	12960
Stephane Corre 14 TER Rue du docteur Teilhol Aubiere I0 63170	Class A Shares	11/26/2025	1000	16600
Stephane Corre 14 TER Rue du docteur Teilhol Aubiere I0 63170	Class A Shares	12/01/2025	1000	16900
Stephane Corre 14 TER Rue du docteur Teilhol Aubiere I0 63170	Class A Shares	02/25/2026	3200	82260

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What did the Form 144 for CSTM disclose?

It disclosed proposed sales of 6,000 Class A shares by Stephane Corre on four dates. The filing lists trades on 11/25/2025, 11/26/2025, 12/01/2025, and 02/25/2026 with per‑trade share counts shown.

Who is the seller named in the CSTM filing?

The seller is listed as Stephane Corre. The excerpt shows that Corre is the named holder for the four Class A share transactions and includes the sequence of dates and share quantities associated with each sale.

How many shares did Stephane Corre report selling in the last three months?

The filing shows four dispositions totaling 6,000 shares (800; 1,000; 1,000; 3,200). Each line in the excerpt pairs a specific date with the corresponding share count and numeric entry.

Are monetary values included in the filing excerpt for the sales?

Yes; each sale row includes an associated numeric value adjacent to the share counts. The excerpt shows values 12,960, 16,600, 16,900, and 82,260 alongside the respective sale lines.

Does this notice confirm execution of the sales for CSTM shares?

This excerpt records proposed or reported sale rows with dates and quantities; it does not separately confirm execution status. Subsequent transaction reports or confirmations would establish final execution and reporting under applicable rules.