Jack Q. Guo - 05 May 2026 Form 4 Insider Report for CONSTELLIUM SE (CSTM)

Reporting relationship: EVP & CFO
Issuer ticker: CSTM
Reported as of: 05 May 2026
Net transaction value: -$822,057
SEC form: 4
Accepted by SEC: 07 May 2026, 10:02:13 UTC
Prior SEC filing: 16 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Kristine Carpenter, Attorney-in-Fact for Jack Guo

Key filing fact

Jack Q. Guo filed Form 4 for CONSTELLIUM SE (CSTM) on 07 May 2026.

Key facts

This page summarizes Jack Q. Guo's Form 4 filing for CONSTELLIUM SE (CSTM).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 07 May 2026, 10:02.

Change

Previous filing in this sequence was filed on 16 Mar 2026.
Current net transaction value: -$822,057.

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 0002095182 Primary reporting owner

Guo Jack Q.

Relationship: EVP & CFO
Address: 300 EAST LOMBARD STREET, SUITE 1710, BALTIMORE
Signature: /s/ Kristine Carpenter, Attorney-in-Fact for Jack Guo
Signature date: 07 May 2026

Reported non-derivative transactions

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

CSTM transaction

Ordinary shares

Sale

Transaction value: $822,057
Shares: -25,201
Change %: -12%
Price: $32.62
Shares after: 185,368
Date: 05 May 2026
Ownership: Direct
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.62 to $32.68, inclusive. The reporting person undertakes to provide to Constellium SE, any security holder of Constellium SE, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.