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Jean-Christophe Deslarzes - DirectorOpen-market purchase$41K- John Ormerod - Director
About CONSTELLIUM SE (CSTM)
CONSTELLIUM SE is an SEC registrant, filing under CIK 0001563411, classified as secondary smelting and refining of nonferrous metals. We track it alongside the rest of the Materials sector.
CSTM Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 1 | 1,490 | $41K |
CSTM insider transactions (Form 4)
2245 Form 4 filings on record, the earliest from Feb 24, 2026, newest first. Filing history page 2 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Stephane Corre - Officer | Open-market purchase | Ordinary shares | 8,026 footnote F1 | $0.00 | - | |
| ||||||
| Philippe Hoffmann - Officer | Open-market sale | Ordinary shares | 4,728 | $25.87 | $122K | |
| Philippe Hoffmann - Officer | Open-market purchase | Ordinary shares | 71,132 footnote F1 | $0.00 | - | |
| ||||||
| Marcus Becker - Officer | Open-market purchase | Ordinary shares | 14,592 footnote F1 | $0.00 | - | |
| Marcus Becker - Officer | Open-market sale | Ordinary shares | 1,113 | $25.87 | $29K | |
| ||||||
 Ingrid Joerg - Officer | Open-market sale | Ordinary shares | 4,614 | $25.87 | $119K | |
| Ingrid Joerg - Officer | Grant or award | Ordinary shares | 71,132 footnote F1 | $0.00 | - | |
| ||||||
| Jack Q. Guo - Officer | Grant or award | Ordinary shares | 75,874 footnote F1 | $0.00 | - | |
| Jack Q. Guo - Officer | Open-market sale | Ordinary shares | 41,717 | $25.87 | $1.08M | |
| ||||||
 Philip Ryan Jurkovic - Officer | Open-market sale | Ordinary shares | 29,900 | $25.87 | $774K | |
| Philip Ryan Jurkovic - Officer | Grant or award | Ordinary shares | 59,276 footnote F1 | $0.00 | - | |
| ||||||
 Ludovic Piquier - Officer | Grant or award | Ordinary shares | 30,350 footnote F1 | $0.00 | - | |
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| Niklaus Schild - Officer | Grant or award | Ordinary shares | 5,106 footnote F1 | $0.00 | - | |
| ||||||
| Nicolas Brun - Officer | Open-market sale | Ordinary shares | 17,701 footnote F1 | $24.67 | $437K | |
| Nicolas Brun - Officer | Grant or award | Ordinary shares | 23,710 footnote F2 | $0.00 | - | |
| ||||||
| Philippe Hoffmann - Officer | Open-market sale | Ordinary shares | 50,000 | $26.03 footnote F1 | $1.30M | |
| Philippe Hoffmann - Officer | Open-market sale | Ordinary shares | 30,000 | $27.14 footnote F2 | $814K | |
| ||||||
| Stephane Corre - Officer | Open-market sale | Ordinary shares | 3,000 | $24.69 footnote F1 | $74K | |
| ||||||
| Isabelle Boccon-Gibod - Director | Open-market sale | Ordinary shares | 10,000 | $25.77 footnote F1 | $258K | |
| ||||||
| Stephane Corre - Officer | Open-market sale | Ordinary shares | 3,200 | $25.71 footnote F1 | $82K | |
| ||||||
| Marcus Becker - Officer | Open-market sale | Ordinary shares | 15,570 | $25.58 footnote F1 | $398K | |
| ||||||
| Stephen Charles Walters - Officer | Open-market sale | Ordinary shares | 1,500 | $25.39 footnote F1 | $38K | |
| ||||||
Item 2.02, 9.01
Item 5.07, 9.01
Item 2.02, 9.01
Item 8.01, 9.01
Recent CSTM Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| - | - | - | - | View on EDGAR | |
| - | - | - | - |
CSTM insider trading FAQ
What is the latest insider trade for CSTM?
CONSTELLIUM SE (CSTM) had 1 insider filing in the last 90 days, with the most recent on 2026-08-03. The full record for CSTM runs to 45 Form 4 filings, the earliest from 2026-02-24. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying CSTM stock?
1 insider purchase of CSTM was filed in the last 90 days, totaling $41K.
How many insiders are selling CSTM stock?
No insider sales of CSTM were filed in the last 90 days. 26 sales are on record for this company.
Where can I see CSTM SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects CSTM Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Materials companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Jean-Christophe Deslarzes view on EDGAR
- - Ingrid Joerg view on EDGAR
- - John Ormerod view on EDGAR
- - Marcus Becker view on EDGAR
- - Bradley Lee Soultz view on EDGAR
- - Martin Jarrett view on EDGAR
- - Ludovic Piquier view on EDGAR
- - Nicolas Brun view on EDGAR
- - Stephane Corre view on EDGAR
Related companies with recent insider activity
Learn more
- How to read insider buying signals
- What an open-market purchase by an insider can and cannot tell you.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Materials
- Where CSTM's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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