NYSE · CIK 0001563411
CSTM CONSTELLIUM SE
Insider trading from SEC Form 4. Last filing Aug 3, 2026. Close $25.81 on Oct 9, 2026, +79% from the 52-week low and -29% from the high.
In brief
CONSTELLIUM SE (CSTM) has 45 SEC Form 4 filings on file from 18 insiders, the latest filed on Aug 3, 2026. In the last 90 days insiders made 1 open-market buy worth $41k and 0 open-market sells worth $0, net +$41k.
29 open-market trades have been scored at CSTM. The newest: Jean-Christophe Deslarzes (director) bought $41k of stock on Aug 3, 2026, filed Aug 3, 2026, scored 25 (weak). The largest of the 29 shown: Philippe Hoffmann (President, A&T) sold $2.1M on Mar 4, 2026, scored 80 (strong). 2 insiders sold within 14 days of each other around Jun 4, 2026.
24 Form 144 notices of planned sales are on file, the latest filed Jun 4, 2026.
Last 90 days
Net insider value
+$41k
more bought than sold
Buys
1
$41k by 1 insider
Sells
0
$0 by 0 insiders
Insiders on file
18
with a Form 4 at this company
Price and insider trades, last year
CSTMOct 9, 2026 · close 25.81
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at CONSTELLIUM SE, scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 25Weak | Jean-Christophe Deslarzes director buy | $41k 1,490 shares | +4% | +117% from low-21% from high | |
| 42Moderate | John Ormerod director sell | $280k 8,000 shares | -24% | +182% from low0% from high | |
| 55Moderate | Marcus Becker SVP CPO sell | $363k 10,391 shares | -38% | +183% from low-3% from high | |
| 40Moderate | Bradley Lee Soultz director buy | $85k 2,500 shares | - | +187% from low-3% from high | |
| 46Moderate | Martin Jarrett SVP Chief Innovation Officer sell | $158k 4,716 shares | -23% | +187% from low-3% from high | |
| 36Weak | Ludovic Piquier SVP Manuf Excellence & CTO sell | $34k 1,000 shares | -0% | +185% from low-3% from high | |
| 59Moderate | Nicolas Brun SVP PA, Comm & Sust sell | $902k 26,661 shares | -20% | +193% from low0% from high | |
| 46Moderate | Stephane Corre President, AS&I sell | $168k 5,000 shares | -7% | +203% from low0% from high | |
| 49Moderate | Michiel Brandjes director sell | $325k 10,400 shares | -20% | +206% from low0% from high | |
| 65Notable | Jack Q. Guo EVP & CFO sell | $822k 25,201 shares | -12% | +206% from low0% from high | |
| 70Notable | Philippe Hoffmann President, A&T sell | $1.6M 50,000 shares | -26% | +197% from low-1% from high | |
| 46Moderate | Stephane Corre President, AS&I sell | $160k 5,000 shares | -7% | +197% from low-1% from high | |
| 60Notable | Philip Ryan Jurkovic SVP & CHRO sell | $1.6M 48,784 shares | -22% | +197% from low-1% from high | |
| 34Weak | Jean-Christophe Deslarzes director buy | $41k 1,325 shares | +3% | +197% from low-1% from high | |
| 53Moderate | Marcus Becker SVP CPO sell | $251k 10,000 shares | -27% | - | |
| 21Weak | Jean-Christophe Deslarzes director buy | $41k 1,665 shares | +4% | - | |
| 41Moderate | Stephane Corre President, AS&I sell | $39k 1,500 shares | -2% | - | |
| 35Weak | Marcus Becker SVP CPO sell | $29k 1,113 shares | -3% | - | |
| 52Moderate | Nicolas Brun SVP PA, Comm & Sust sell | $437k 17,701 shares | -15% | - | |
| 57Moderate | Philip Ryan Jurkovic SVP & CHRO sell | $774k 29,900 shares | -12% | - | |
| 67Notable | Jack Q. Guo EVP & CFO sell | $1.1M 41,717 shares | -18% | - | |
| 45Moderate | Philippe Hoffmann President, A&T sell | $122k 4,728 shares | -3% | - | |
| 50Moderate | Ingrid Joerg CEO sell | $119k 4,614 shares | -1% | - | |
| 80Strong | Philippe Hoffmann President, A&T sell | $2.1M 80,000 shares | -59% | - | |
| 43Moderate | Stephane Corre President, AS&I sell | $74k 3,000 shares | -6% | - | |
| 53Moderate | Isabelle Boccon-Gibod director sell | $258k 10,000 shares | -30% | - | |
| 44Moderate | Stephane Corre President, AS&I sell | $82k 3,200 shares | -6% | - | |
| 66Notable | Marcus Becker SVP CPO sell | $398k 15,570 shares | -100% | - | |
| 56Moderate | Stephen Charles Walters SVP GC & Secretary sell | $38k 1,500 shares | -100% | - |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jun 4, 2026 | Ormerod John Director | 8,000 0.01% of outstanding | $278k | Jun 4, 2026 | none |
| May 28, 2026 | Marcus Becker Affiliate | 10,391 0.01% of outstanding | $363k | May 28, 2026 | $280k |
| May 26, 2026 | Bpifrance Participations SA May be deemed an affiliate | 2,095,000 1.54% of outstanding | $70M | May 26, 2026 | none |
| May 14, 2026 | Martin Roy Jarrett Affiliate | 4,716 0.00% of outstanding | $158k | May 14, 2026 | $98k |
| May 11, 2026 | Nicolas Brun Affiliate | 26,661 0.02% of outstanding | $903k | May 11, 2026 | $437k |
| May 8, 2026 | Stephane Corre Affiliate | 5,000 0.00% of outstanding | $168k | May 8, 2026 | $355k |
| May 7, 2026 | Brandjes Michiel Director | 10,400 0.01% of outstanding | $336k | May 5, 2026 | none |
| May 5, 2026 | JACK GUO Officer | 25,201 0.02% of outstanding | $822k | May 5, 2026 | $1.1M |
| May 1, 2026 | Ryan Jurkovic affiliate | 48,784 0.04% of outstanding | $1.6M | May 1, 2026 | $774k |
| May 1, 2026 | Stephane Corre Affiliate | 5,000 0.00% of outstanding | $160k | May 1, 2026 | $195k |
| May 1, 2026 | Philippe Hoffmann affiliate | 50,000 0.04% of outstanding | $1.6M | May 1, 2026 | $2.2M |
| Mar 16, 2026 | Marcus Becker affiliate | 10,000 0.01% of outstanding | $251k | Mar 16, 2026 | $427k |
| Mar 10, 2026 | Marcus Becker Affiliate | 1,113 0.00% of outstanding | $29k | Mar 10, 2026 | $398k |
| Mar 10, 2026 | Philippe Hoffmann Affiliate | 4,728 0.00% of outstanding | $122k | Mar 10, 2026 | $2.1M |
| Mar 10, 2026 | Ingrid Joerg Affiliate | 4,614 0.00% of outstanding | $119k | Mar 10, 2026 | none |
| Mar 10, 2026 | Jack Guo Affiliate | 41,717 0.03% of outstanding | $1.1M | Mar 10, 2026 | none |
| Mar 10, 2026 | Ryan Jurkovic Affiliate | 29,900 0.02% of outstanding | $774k | Mar 10, 2026 | none |
| Mar 10, 2026 | Stephane Corre Affiliate | 1,500 0.00% of outstanding | $39k | Mar 10, 2026 | $173k |
| Mar 9, 2026 | Nicolas Brun Affiliate | 17,701 0.01% of outstanding | $437k | Mar 9, 2026 | none |
| Mar 4, 2026 | Philippe Hoffmann affiliate | 80,000 0.06% of outstanding | $2.1M | Mar 4, 2026 | none |
| Feb 27, 2026 | Stephane Corre Affiliate | 3,000 0.00% of outstanding | $74k | Feb 27, 2026 | $129k |
| Feb 26, 2026 | Stephane Corre Affiliate | 3,200 0.00% of outstanding | $82k | Feb 25, 2026 | $46k |
| Feb 25, 2026 | Boccon-Gibod Isabelle Director | 10,000 0.01% of outstanding | $258k | Feb 25, 2026 | none |
| Feb 24, 2026 | Becker Marcus Officer | 15,570 0.01% of outstanding | $26 | Feb 20, 2026 | none |
Transactions
The newest 50 of 52 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 3, 2026 | Jean-Christophe Deslarzes director | POpen-market purchase Ordinary shares | +1,490 | $27.24 | $41k | 43,515 | Aug 3, 2026 |
| Jul 10, 2026 | Ingrid Joerg CEO | FTax withholding Ordinary shares | -2,984 | $29.28 | $87k | 406,464 | Jul 13, 2026 |
| Jun 4, 2026 | John Ormerod director | SOpen-market sale Ordinary shares | -8,000 | $35.01 | $280k | 24,873 | Jun 8, 2026 |
| May 28, 2026 | Marcus Becker SVP CPO | SOpen-market sale Ordinary shares | -10,391 | $34.93 | $363k | 16,784 | Jun 1, 2026 |
| May 14, 2026 | Martin Jarrett SVP Chief Innovation Officer | SOpen-market sale Ordinary shares | -4,716 | $33.46 | $158k | 15,375 | May 18, 2026 |
| May 14, 2026 | Bradley Lee Soultz director | POpen-market purchase Ordinary sharesindirect: By Bradley L. Soultz Irrevocable Trust | +2,500 | $33.84 | $85k | 2,500 | May 18, 2026 |
| May 12, 2026 | Ludovic Piquier SVP Manuf Excellence & CTO | SOpen-market sale Ordinary shares | -1,000 | $33.57 | $34k | 241,713 | May 13, 2026 |
| May 8, 2026 | Stephane Corre President, AS&I | SOpen-market sale Ordinary shares | -5,000 | $33.52 | $168k | 62,313 | May 12, 2026 |
| May 11, 2026 | Nicolas Brun SVP PA, Comm & Sust | SOpen-market sale Ordinary shares | -26,661 | $33.85 | $902k | 104,891 | May 12, 2026 |
| May 5, 2026 | Michiel Brandjes director | SOpen-market sale Ordinary shares | -10,400 | $31.25 | $325k | 41,600 | May 7, 2026 |
| May 5, 2026 | Jack Q. Guo EVP & CFO | SOpen-market sale Ordinary shares | -25,201 | $32.62 | $822k | 185,368 | May 7, 2026 |
| May 1, 2026 | Philippe Hoffmann President, A&T | SOpen-market sale Ordinary shares | -50,000 | $31.92 | $1.6M | 144,153 | May 5, 2026 |
| May 1, 2026 | Stephane Corre President, AS&I | SOpen-market sale Ordinary shares | -5,000 | $32.04 | $160k | 67,313 | May 4, 2026 |
| May 1, 2026 | Philip Ryan Jurkovic SVP & CHRO | SOpen-market sale Ordinary shares | -48,784 | $32.01 | $1.6M | 172,149 | May 4, 2026 |
| May 1, 2026 | Jean-Christophe Deslarzes director | POpen-market purchase Ordinary shares | +1,325 | $31.13 | $41k | 42,025 | May 1, 2026 |
| Mar 16, 2026 | Marcus Becker SVP CPO | SOpen-market sale Ordinary shares | -10,000 | $25.09 | $251k | 27,175 | Mar 17, 2026 |
| Mar 2, 2026 | Jean-Christophe Deslarzes director | POpen-market purchase Ordinary shares | +1,665 | $24.77 | $41k | 40,700 | Mar 17, 2026 |
| Mar 12, 2026 | Philippe Hoffmann President, A&T | AGrant or award Ordinary shares | +12,033 | $0.00 | $0 | 194,153 | Mar 16, 2026 |
| Mar 12, 2026 | Marcus Becker SVP CPO | AGrant or award Ordinary shares | +3,938 | $0.00 | $0 | 37,175 | Mar 16, 2026 |
| Mar 12, 2026 | Jack Q. Guo EVP & CFO | AGrant or award Ordinary shares | +19,690 | $0.00 | $0 | 210,569 | Mar 16, 2026 |
| Mar 12, 2026 | Stephane Corre President, AS&I | AGrant or award Ordinary shares | +7,293 | $0.00 | $0 | 72,313 | Mar 16, 2026 |
| Mar 12, 2026 | Nicolas Brun SVP PA, Comm & Sust | AGrant or award Ordinary shares | +4,376 | $0.00 | $0 | 131,552 | Mar 16, 2026 |
| Mar 12, 2026 | Niklaus Schild SVP CIO & CDO | AGrant or award Ordinary shares | +3,355 | $0.00 | $0 | 38,703 | Mar 16, 2026 |
| Mar 12, 2026 | Matthew B. Perkins President, P&ARP | AGrant or award Ordinary shares | +10,210 | $0.00 | $0 | 33,212 | Mar 16, 2026 |
| Mar 12, 2026 | Ingrid Joerg CEO | AGrant or award Ordinary shares | +31,358 | $0.00 | $0 | 409,448 | Mar 16, 2026 |
| Mar 12, 2026 | Ludovic Piquier SVP Manuf Excellence & CTO | AGrant or award Ordinary shares | +5,469 | $0.00 | $0 | 242,713 | Mar 16, 2026 |
| Mar 12, 2026 | Philip Ryan Jurkovic SVP & CHRO | AGrant or award Ordinary shares | +10,210 | $0.00 | $0 | 220,933 | Mar 16, 2026 |
| Mar 12, 2026 | Wiebke Weiler director | AGrant or award Ordinary shares | +625 | $0.00 | $0 | 625 | Mar 16, 2026 |
| Mar 12, 2026 | Stephen Charles Walters SVP GC & Secretary | AGrant or award Ordinary shares | +5,834 | $0.00 | $0 | 25,068 | Mar 16, 2026 |
| Mar 10, 2026 | Stephane Corre President, AS&I | SOpen-market sale Ordinary shares | -1,500 | $25.89 | $39k | 65,020 | Mar 12, 2026 |
| Mar 9, 2026 | Marcus Becker SVP CPO | POpen-market purchase Ordinary shares | +14,592 | $0.00 | $0 | 34,350 | Mar 11, 2026 |
| Mar 9, 2026 | Nicolas Brun SVP PA, Comm & Sust | SOpen-market sale Ordinary shares | -17,701 | $24.67 | $437k | 103,466 | Mar 11, 2026 |
| Mar 9, 2026 | Niklaus Schild SVP CIO & CDO | AGrant or award Ordinary shares | +5,106 | $0.00 | $0 | 35,348 | Mar 11, 2026 |
| Mar 9, 2026 | Ludovic Piquier SVP Manuf Excellence & CTO | AGrant or award Ordinary shares | +30,350 | $0.00 | $0 | 237,244 | Mar 11, 2026 |
| Mar 9, 2026 | Philip Ryan Jurkovic SVP & CHRO | AGrant or award Ordinary shares | +59,276 | $0.00 | $0 | 240,623 | Mar 11, 2026 |
| Mar 9, 2026 | Jack Q. Guo EVP & CFO | AGrant or award Ordinary shares | +75,874 | $0.00 | $0 | 232,596 | Mar 11, 2026 |
| Mar 9, 2026 | Philippe Hoffmann President, A&T | POpen-market purchase Ordinary shares | +71,132 | $0.00 | $0 | 186,848 | Mar 11, 2026 |
| Mar 9, 2026 | Ingrid Joerg CEO | AGrant or award Ordinary shares | +71,132 | $0.00 | $0 | 382,704 | Mar 11, 2026 |
| Mar 9, 2026 | Stephane Corre President, AS&I | POpen-market purchase Ordinary shares | +8,026 | $0.00 | $0 | 66,520 | Mar 11, 2026 |
| Mar 10, 2026 | Philippe Hoffmann President, A&T | SOpen-market sale Ordinary shares | -4,728 | $25.87 | $122k | 182,120 | Mar 11, 2026 |
| Mar 10, 2026 | Ingrid Joerg CEO | SOpen-market sale Ordinary shares | -4,614 | $25.87 | $119k | 378,090 | Mar 11, 2026 |
| Mar 9, 2026 | Nicolas Brun SVP PA, Comm & Sust | AGrant or award Ordinary shares | +23,710 | $0.00 | $0 | 127,176 | Mar 11, 2026 |
| Mar 10, 2026 | Marcus Becker SVP CPO | SOpen-market sale Ordinary shares | -1,113 | $25.87 | $29k | 33,237 | Mar 11, 2026 |
| Mar 10, 2026 | Philip Ryan Jurkovic SVP & CHRO | SOpen-market sale Ordinary shares | -29,900 | $25.87 | $774k | 210,723 | Mar 11, 2026 |
| Mar 10, 2026 | Jack Q. Guo EVP & CFO | SOpen-market sale Ordinary shares | -41,717 | $25.87 | $1.1M | 190,879 | Mar 11, 2026 |
| Mar 4, 2026 | Philippe Hoffmann President, A&T | SOpen-market sale Ordinary shares | -50,000 | $26.03 | $1.3M | 85,425 | Mar 6, 2026 |
| Mar 4, 2026 | Philippe Hoffmann President, A&T | SOpen-market sale Ordinary shares | -30,000 | $27.14 | $814k | 55,425 | Mar 6, 2026 |
| Feb 27, 2026 | Stephane Corre President, AS&I | SOpen-market sale Ordinary shares | -3,000 | $24.69 | $74k | 44,444 | Mar 3, 2026 |
| Feb 26, 2026 | Isabelle Boccon-Gibod director | SOpen-market sale Ordinary shares | -10,000 | $25.77 | $258k | 23,000 | Feb 27, 2026 |
| Feb 25, 2026 | Stephane Corre President, AS&I | SOpen-market sale Ordinary shares | -3,200 | $25.71 | $82k | 47,444 | Feb 27, 2026 |
50 of 52 rows shown.
Insiders
Everyone who has filed a Form 4 here.
- Marcus BeckerSVP CPO
- Isabelle Boccon-Giboddirector
- Michiel Brandjesdirector
- Nicolas BrunSVP PA, Comm & Sust
- Stephane CorrePresident, AS&I
- Jean-Christophe Deslarzesdirector
- Jack Q. GuoEVP & CFO
- Philippe HoffmannPresident, A&T
- Martin JarrettSVP Chief Innovation Officer
- Ingrid JoergCEO
- Philip Ryan JurkovicSVP & CHRO
- John Ormeroddirector
- Matthew B. PerkinsPresident, P&ARP
- Ludovic PiquierSVP Manuf Excellence & CTO
- Niklaus SchildSVP CIO & CDO
- Bradley Lee Soultzceo, officer, director
- Stephen Charles WaltersSVP GC & Secretary
- Wiebke Weilerdirector
Questions about CSTM
Answered from the filings on this page, as of the latest one.
Are insiders buying CSTM?
As of Aug 3, 2026, SEC Form 4 filings show 1 open-market buy worth $41k by 1 insider and 0 open-market sells worth $0 by 0 insiders at CONSTELLIUM SE in the last 90 days, net +$41k. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.
Who was the last insider to trade CSTM on the open market?
Jean-Christophe Deslarzes (director) bought $41k of CSTM on Aug 3, 2026 and filed the Form 4 on Aug 3, 2026. InsiderTell scored 25 (weak).
How many insiders file Form 4 at CONSTELLIUM SE?
18 people have filed a Form 4 at CONSTELLIUM SE, among them Marcus Becker (SVP CPO), Isabelle Boccon-Gibod (director), Michiel Brandjes (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.