CSTM (Constellium SE Class A Ordinary shares)
Insider Trading Activity
Every open-market purchase and sale reported by CSTM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-03 | Jean-Christophe Deslarzes | Director | Buy | — | — |
| 2026-07-13 | Ingrid Joerg | CEO | F | — | — |
| 2026-06-08 | John Ormerod | Director | Sell | — | — |
| 2026-06-01 | Marcus Becker | SVP CPO | Sell | — | — |
| 2026-05-18 | Martin Jarrett | SVP Chief Innovation Officer | Sell | — | — |
| 2026-05-18 | Bradley Lee Soultz | Director | Buy | — | — |
| 2026-05-13 | Ludovic Piquier | SVP Manuf Excellence & CTO | Sell | — | — |
| 2026-05-12 | Nicolas Brun | SVP PA, Comm & Sust | Sell | — | — |
| 2026-05-12 | Stephane Corre | President, AS&I | Sell | — | — |
| 2026-05-07 | Jack Q. Guo | EVP & CFO | Sell | — | — |
| 2026-05-07 | Michiel Brandjes | Director | Sell | — | — |
| 2026-05-05 | Philippe Hoffmann | President, A&T | Sell | — | — |
| 2026-05-04 | Stephane Corre | President, AS&I | Sell | — | — |
| 2026-05-04 | Philip Ryan Jurkovic | SVP & CHRO | Sell | — | — |
| 2026-05-01 | Jean-Christophe Deslarzes | Director | Buy | — | — |
| 2026-03-17 | Jean-Christophe Deslarzes | Director | Buy | — | — |
| 2026-03-17 | Marcus Becker | SVP CPO | Sell | — | — |
| 2026-03-16 | Stephane Corre | President, AS&I | A | — | — |
| 2026-03-16 | Jack Q. Guo | EVP & CFO | A | — | — |
| 2026-03-16 | Philippe Hoffmann | President, A&T | A | — | — |
| 2026-03-16 | Stephen Charles Walters | SVP GC & Secretary | A | — | — |
| 2026-03-16 | Ingrid Joerg | CEO | A | — | — |
| 2026-03-16 | Matthew B. Perkins | President, P&ARP | A | — | — |
| 2026-03-16 | Nicolas Brun | SVP PA, Comm & Sust | A | — | — |
| 2026-03-16 | Marcus Becker | SVP CPO | A | — | — |
| 2026-03-16 | Niklaus Schild | SVP CIO & CDO | A | — | — |
| 2026-03-16 | Ludovic Piquier | SVP Manuf Excellence & CTO | A | — | — |
| 2026-03-16 | Wiebke Weiler | Director | A | — | — |
| 2026-03-16 | Philip Ryan Jurkovic | SVP & CHRO | A | — | — |
| 2026-03-12 | Stephane Corre | President, AS&I | Sell | — | — |
| 2026-03-11 | Ludovic Piquier | SVP Manuf Excellence & CTO | A | — | — |
| 2026-03-11 | Stephane Corre | President, AS&I | Buy | — | — |
| 2026-03-11 | Ingrid Joerg | CEO | MIXED | — | — |
| 2026-03-11 | Jack Q. Guo | EVP & CFO | MIXED | — | — |
| 2026-03-11 | Nicolas Brun | SVP PA, Comm & Sust | MIXED | — | — |
| 2026-03-11 | Niklaus Schild | SVP CIO & CDO | A | — | — |
| 2026-03-11 | Philippe Hoffmann | President, A&T | MIXED | — | — |
| 2026-03-11 | Philip Ryan Jurkovic | SVP & CHRO | MIXED | — | — |
| 2026-03-11 | Marcus Becker | SVP CPO | MIXED | — | — |
| 2026-03-06 | Philippe Hoffmann | President, A&T | Sell | — | — |
| 2026-03-03 | Stephane Corre | President, AS&I | Sell | — | — |
| 2026-02-27 | Isabelle Boccon-Gibod | Director | Sell | — | — |
| 2026-02-27 | Stephane Corre | President, AS&I | Sell | — | — |
| 2026-02-24 | Marcus Becker | SVP CPO | Sell | — | — |
| 2026-02-24 | Stephen Charles Walters | SVP GC & Secretary | Sell | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | CEO | 406,464 | — |
| — | SVP Manuf Excellence & CTO | 241,713 | — |
| — | EVP & CFO | 185,368 | — |
| — | SVP & CHRO | 172,149 | — |
| — | President, A&T | 144,153 | — |
| — | SVP PA, Comm & Sust | 104,891 | — |
| — | President, AS&I | 62,313 | — |
| — | Director | 43,515 | — |
| — | Director | 41,600 | — |
| — | SVP CIO & CDO | 38,703 | — |
| — | President, P&ARP | 33,212 | — |
| — | SVP GC & Secretary | 25,068 | — |
| — | Director | 24,873 | — |
| — | Director | 23,000 | — |
| — | SVP CPO | 16,784 | — |
| — | SVP Chief Innovation Officer | 15,375 | — |
| — | Director | 15,000 | — |
| — | Director | 625 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the CSTM quote page; the site-wide leaderboard is on the insider transactions hub.