Philippe Hoffmann sells Class A shares at Constellium (NYSE: CSTM)

Rhea-AI Filing Summary

Constellium SE submitted a Rule 144 notice relating to Common Stock and lists recent Class A share sales by Philippe Hoffmann. The filing records sales of $2,115,512.55 for 80,000 Class A shares on 03/04/2026 and $122,328.17 for 4,728 Class A shares on 03/10/2026

Insights

Securities Compliance Analyst

Rule 144 notice showing recent insider dispositions by a named holder.

The filing lists proposed Common Stock sales alongside two completed Class A share dispositions by Philippe Hoffmann: $2,115,512.55 for 80,000 shares on 03/04/2026 and $122,328.17 for 4,728 shares on 03/10/2026. This is a statutory disclosure under Rule 144 rather than a corporate action.

Such notices are administrative; cash‑flow treatment and any broker/dealer role are not detailed in the excerpt. Subsequent filings or broker confirmations would show execution mechanics or additional holder sales.

Key Figures

Sale - 03/04/2026: 80,000 shares Proceeds - 03/04/2026: $2,115,512.55 Sale - 03/10/2026: 4,728 shares +3 more

6 metrics

Sale - 03/04/2026 80,000 shares Class A Shares sold by Philippe Hoffmann on 03/04/2026

Proceeds - 03/04/2026 $2,115,512.55 Proceeds reported for 80,000 share sale on 03/04/2026

Sale - 03/10/2026 4,728 shares Class A Shares sold by Philippe Hoffmann on 03/10/2026

Proceeds - 03/10/2026 $122,328.17 Proceeds reported for 4,728 share sale on 03/10/2026

PSU issuance 32,818 units PSU Issuance dated 03/09/2026

RSU issuance 17,182 units RSU Issuance dated 03/09/2026

Key Terms

Rule 144, PSU, RSU, Class A Shares

4 terms

Rule 144 regulatory

"144: Securities Sold During The Past 3 Months"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

PSU financial

"PSU Issuance | Constellium SE (issuer) | 32,818"

A PSU is a company where the government owns a controlling stake and often plays a direct role in its management and strategy. Think of it like a business that operates with public oversight, similar to a town-run utility versus a private neighborhood service. Investors watch PSUs differently because government involvement can affect profits, dividend policies, regulatory treatment and stability, so these stocks may behave more like policy instruments than pure market-driven enterprises.

RSU financial

"RSU Issuance | Constellium SE (issuer) | 17,182"

Restricted stock units (RSUs) are a form of company shares given to employees as part of their compensation, usually with certain restrictions or conditions, such as remaining with the company for a set period. When these restrictions lift, employees receive actual shares that they can sell or hold. For investors, RSUs can impact a company's stock supply and reflect the company's commitment to attracting and retaining talent.

Class A Shares market

"Philippe Hoffmann ... | Class A Shares | 03/04/2026 | 80,000"

Class A shares are one of a company’s distinct types of stock that come with a specific set of rights—commonly different voting power, dividend treatment, or transfer rules—defined in the company’s charter. Investors care because those rights affect control, income and resale value; like holding a seat at a table that has different rules or stronger chips than other seats, owning Class A changes how much influence and return you can expect.

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	50000	1595990.4	135069771	05/01/2026	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	03/09/2026	PSU Issuance	Constellium SE (issuer)			32818	03/09/2026	Equity Compensation
Common Stock	03/09/2026	RSU Issuance	Constellium SE (issuer)			17182	03/09/2026	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
Philippe Hoffmann corniche du Soleil 17 Sierre V8 3960	Class A Shares	03/04/2026	80000	2115512.55
Philippe Hoffmann corniche du Soleil 17 Sierre V8 3960	Class A Shares	03/10/2026	4728	122328.17

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 does Constellium's (CSTM) Form 144 report?

It reports a Rule 144 notice for Common Stock and lists recent Class A share disposals. The filing cites two sales by Philippe Hoffmann totaling 84,728 shares on specific March 2026 dates.

How many Class A shares did Philippe Hoffmann sell according to the filing?

The filing shows two disposals: 80,000 shares on 03/04/2026 and 4,728 shares on 03/10/2026, totaling 84,728 Class A shares reported in the excerpt.

What proceeds were recorded for the March 2026 share sales?

The excerpt lists proceeds of $2,115,512.55 for the 80,000‑share sale and $122,328.17 for the 4,728‑share sale, as reported on the filing's sales table.

Does the Form 144 indicate who will receive the sale proceeds?

The provided excerpt does not specify who receives the proceeds. The table lists sale amounts and holder names, but it does not state the cash‑flow recipient or any use of proceeds details.

Are PSU or RSU issuances mentioned in this filing?

Yes; the excerpt references PSU and RSU issuances dated 03/09/2026 with quantities of 32,818 PSUs and 17,182 RSUs listed under securities to be sold/issuance sections.