Philippe Hoffmann - 09 Mar 2026 Form 4 Insider Report for CONSTELLIUM SE (CSTM)

Reporting relationship: President, A&T
Issuer ticker: CSTM
Reported as of: 09 Mar 2026
Net transaction value: -$122,313
SEC form: 4
Accepted by SEC: 11 Mar 2026, 06:48:46 UTC
Prior SEC filing: 06 Mar 2026
Next SEC filing: 16 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Kristine Carpenter, Attorney-in-Fact for Philippe Hoffmann

Key filing fact

Philippe Hoffmann filed Form 4 for CONSTELLIUM SE (CSTM) on 11 Mar 2026.

Key facts

This page summarizes Philippe Hoffmann's Form 4 filing for CONSTELLIUM SE (CSTM).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 11 Mar 2026, 06:48.

Change

Previous filing in this sequence was filed on 06 Mar 2026.
Current net transaction value: -$122,313.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002093449 Primary reporting owner

Hoffmann Philippe

Relationship: President, A&T
Address: 300 EAST LOMBARD STREET, SUITE 1710, BALTIMORE
Signature: /s/ Kristine Carpenter, Attorney-in-Fact for Philippe Hoffmann
Signature date: 11 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CSTM transaction

Ordinary shares

Purchase

Transaction value
Shares: +71,132
Change %: +61%
Price: $0.000000^*
Shares after: 186,848
Date: 09 Mar 2026
Ownership: Direct
Footnotes: F1

CSTM transaction

Ordinary shares

Sale

Transaction value: $122,313
Shares: -4,728
Change %: -2.5%
Price: $25.87
Shares after: 182,120
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents earned non-derivative performance stock units of Constellium SE (the "Issuer") granted on March 9, 2023 that contained performance-vesting requirements, which vested on March 9, 2026.

Footnote F2

The Reporting Person sold 4,728 ordinary shares of the Issuer upon the vesting of restricted stock unit and performance stock unit awards previously granted on March 9, 2023, solely to satisfy tax withholding obligations incurred upon vesting.