CSTM Form 144: Insider sale notice for ordinary shares

CSTM files a Form 144 reporting proposed sales of ordinary shares.

Accepted by SEC EDGAR 02/24/2026 - 06:31 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

CSTM files a Form 144 reporting proposed sales of ordinary shares. The excerpt lists proposed disposals of restricted and performance ordinary shares dated 05/11/2024 and 03/10/2025 with line-item quantities of 1,211, 5,570, 5,361 and 3,428.

FAQ

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What does CSTM report in this Form 144 filing?

The filing reports proposed sales of ordinary shares, listing both restricted and performance share lots. The excerpt shows lot dates 05/11/2024 and 03/10/2025 and quantities of 1,211, 5,570, 5,361 and 3,428.

Which share types are included in the CSTM Form 144?

The excerpt lists Restricted Shares and Performance Shares as the securities to be sold. Each line pairs a share type with a date and a quantity such as 1,211 and 5,570 in the provided excerpt.

Are transaction dates shown in the CSTM excerpt?

Yes. The excerpt shows transaction or grant dates including 05/11/2024 and 03/10/2025. Each date is associated with a listed share type and a numeric quantity in the excerpt.

Does the excerpt state the total outstanding shares or exchange listing?

The excerpt includes a large numeric line containing 137,801,779 and a reference to NYSE, but the excerpt does not provide an explicit label tying that number to outstanding shares or another specific category.

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

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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	0002092960
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CONSTELLIUM SE
SEC File Number	001-35931
Address of Issuer	300 E. LOMBARD STREET SUITE 1710 BALTIMORE MARYLAND 21202
Phone	412-403-3233
Name of Person for Whose Account the Securities are To Be Sold	Becker Marcus
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	Officer

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
Ordinary Shares	Global Shares Execution Services Limited Old Bakery Street Valleta Malta O1 VLTI455	15570	25.58	137801779	02/20/2026	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 *
Ordinary Shares	05/11/2024	Restricted Shares	Issuer			1211	02/20/2026	Compensation
Ordinary Shares	05/11/2024	Performance Shares	Issuer			5570	02/20/2026	Compensation
Ordinary Shares	03/10/2025	Restricted Shares	Issuer			5361	02/20/2026	Compensation
Ordinary Shares	03/10/2025	Performance Shares	Issuer			3428	02/20/2026	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

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	02/24/2026
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	/s/ Marcus Becker
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)