CONSTELLIUM SE (CSTM)
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Jean-Christophe Deslarzes - Director
Martin Jarrett - Officer
Ludovic Piquier - OfficerConstellium SE is engaged in the development, manufacture and sale of a broad range of high value-added specialty rolled and extruded aluminum products to the aerospace, space, defense, packaging, automotive, commercial transportation and general industrial end-markets. Its business model is to add value by converting aluminum into semi-fabricated and, in some instances, fully-fabricated alloyed aluminum products that meet stringent and performance-critical requirements from customers. It operates through three segments: Aerospace & Transportation Operating Segment, Packaging & Automotive Rolled Products Operating Segment, and Automotive Structures & Industry Operating Segment. It serves Aerospace, Packaging and Automotive and operates in the United States, France, Germany and others.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 1 | 1,490 | $41K |
| Open-market sale | 1 | 8,000 | $280K |
| Tax withholding / forfeiture | 1 | 2,984 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
45 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 | $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 | $0.00 | - | |
| Marcus Becker - Officer | Open-market purchase | Ordinary shares | 14,592 | $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 | $0.00 | - | |
| Jack Q. Guo - Officer | Grant or award | Ordinary shares | 75,874 | $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 | $0.00 | - | |
| Ludovic Piquier - Officer | Grant or award | Ordinary shares | 30,350 | $0.00 | - | |
| Niklaus Schild - Officer | Grant or award | Ordinary shares | 5,106 | $0.00 | - | |
| Nicolas Brun - Officer | Open-market sale | Ordinary shares | 17,701 | $24.67 | $437K | |
| Nicolas Brun - Officer | Grant or award | Ordinary shares | 23,710 | $0.00 | - | |
| Philippe Hoffmann - Officer | Open-market sale | Ordinary shares | 50,000 | $26.03 | $1.30M | |
| Philippe Hoffmann - Officer | Open-market sale | Ordinary shares | 30,000 | $27.14 | $814K | |
| Stephane Corre - Officer | Open-market sale | Ordinary shares | 3,000 | $24.69 | $74K | |
| Isabelle Boccon-Gibod - Director | Open-market sale | Ordinary shares | 10,000 | $25.77 | $258K | |
| Stephane Corre - Officer | Open-market sale | Ordinary shares | 3,200 | $25.71 | $82K | |
| Marcus Becker - Officer | Open-market sale | Ordinary shares | 15,570 | $25.58 | $398K | |
| Stephen Charles Walters - Officer | Open-market sale | Ordinary shares | 1,500 | $25.39 | $38K |
This is as far as the anonymous view goes. Create a free account for all 45 CSTM filings on record.
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| - | - | - | - | View on EDGAR | |
| - | - | - | - | View on EDGAR | |
| - | - | - | - | View on EDGAR |
CONSTELLIUM SE (CSTM) had 3 insider filings 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 tracks every Form 4, Form 144, and 8-K filing in real time.
1 insider purchase of CSTM was filed in the last 90 days, totaling $41K.
1 insider sale of CSTM was filed in the last 90 days, totaling $280K.
This page tracks CSTM Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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