CSTM insider buying and SEC filings, explained
Constellium SE · CIK 1563411
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$250K
Insiders who bought
2
Sold (not marked 10b5-1)
$12.2M
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Nov 2, 2026 | Purchase (code P) | Jean-Christophe Deslarzes (Director) bought 1,800 shares at $23.41 ($42K), reported as a purchase (code P). Holdings up 4% to 45,315 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 3, 2026, 9:34 AM ET |
| Aug 3, 2026 | Purchase (code P) | Jean-Christophe Deslarzes (Director) bought 1,490 shares at $27.24 ($41K), reported as a purchase (code P). Holdings up 4% to 43,515 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 3, 2026 |
| Jun 4, 2026 | Sale | John Ormerod (Director) sold 8,000 shares at $35.01 ($280K). Holdings down 24% to 24,873 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 8, 2026 |
| May 28, 2026 | Sale | Marcus Becker (SVP CPO) sold 10,391 shares at about $34.93 ($363K). Holdings down 38% to 16,784 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 1, 2026 |
| May 14, 2026 | Sale | Martin Jarrett (SVP Chief Innovation Officer) sold 4,716 shares at about $33.46 ($158K). Holdings down 23% to 15,375 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 18, 2026 |
| May 14, 2026 | Purchase (code P) | Bradley Lee Soultz (Director) bought 2,500 shares indirectly (by trust) at about $33.84 ($85K), reported as a purchase (code P). New position of 2,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 18, 2026 |
| May 12, 2026 | Sale | Ludovic Piquier (SVP Manuf Excellence & CTO) sold 1,000 shares at about $33.57 ($34K). Holdings down <1% to 241,713 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 13, 2026 |
| May 11, 2026 | Sale | Nicolas Brun (SVP PA, Comm & Sust) sold 26,661 shares at about $33.85 ($902K). Holdings down 20% to 104,891 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 12, 2026 |
| May 8, 2026 | Sale | Stephane Corre (President / COO) sold 5,000 shares at about $33.52 ($168K). Holdings down 7% to 62,313 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 12, 2026 |
| May 5, 2026 | Sale | Jack Q. Guo (CFO) sold 25,201 shares at about $32.62 ($822K). Holdings down 12% to 185,368 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 7, 2026 |
| May 5, 2026 | Sale | Michiel Brandjes (Director) sold 10,400 shares at about $31.25 ($325K). Holdings down 20% to 41,600 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 7, 2026 |
| May 1, 2026 | Sale | Philippe Hoffmann (President / COO) sold 50,000 shares at about $31.92 ($1.6M). Holdings down 26% to 144,153 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 5, 2026 |
| May 1, 2026 | Sale | Philip Ryan Jurkovic (SVP & CHRO) sold 48,784 shares at about $32.01 ($1.6M). Holdings down 22% to 172,149 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 4, 2026 |
| May 1, 2026 | Sale | Stephane Corre (President / COO) sold 5,000 shares at about $32.04 ($160K). Holdings down 7% to 67,313 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 4, 2026 |
| May 1, 2026 | Purchase (code P) | Jean-Christophe Deslarzes (Director) bought 1,325 shares at $31.13 ($41K), reported as a purchase (code P). Holdings up 3% to 42,025 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 1, 2026 |
| Mar 16, 2026 | Sale | Marcus Becker (SVP CPO) sold 10,000 shares at about $25.09 ($251K). Holdings down 27% to 27,175 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 2, 2026 | Purchase (code P) | Jean-Christophe Deslarzes (Director) bought 1,665 shares at $24.77 ($41K), reported as a purchase (code P). Holdings up 4% to 40,700 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 10, 2026 | Sale | Stephane Corre (President / COO) sold 1,500 shares at about $25.89 ($39K). Holdings down 2% to 65,020 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 12, 2026 |
| Mar 9, 2026 | Other purchase | Stephane Corre (President / COO) bought 8,026 Ordinary shares at $0.0000 ($0), reported as a purchase (code P). Holdings up 14% to 66,520 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 9, 2026 | Sale | Nicolas Brun (SVP PA, Comm & Sust) sold 17,701 shares at about $24.67 ($437K). Holdings down 15% to 103,466 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 10, 2026 | Sale | Ingrid Joerg (CEO and Director) sold 4,614 shares at $25.87 ($119K). Holdings down 1% to 378,090 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 10, 2026 | Sale | Philippe Hoffmann (President / COO) sold 4,728 shares at $25.87 ($122K). Holdings down 3% to 182,120 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 9, 2026 | Other purchase | Philippe Hoffmann (President / COO) bought 71,132 Ordinary shares at $0.0000 ($0), reported as a purchase (code P). Holdings up 61% to 186,848 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 10, 2026 | Sale | Marcus Becker (SVP CPO) sold 1,113 shares at $25.87 ($29K). Holdings down 3% to 33,237 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 9, 2026 | Other purchase | Marcus Becker (SVP CPO) bought 14,592 Ordinary shares at $0.0000 ($0), reported as a purchase (code P). Holdings up 74% to 34,350 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 10, 2026 | Sale | Jack Q. Guo (CFO) sold 41,717 shares at $25.87 ($1.1M). Holdings down 18% to 190,879 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 10, 2026 | Sale | Philip Ryan Jurkovic (SVP & CHRO) sold 29,900 shares at $25.87 ($774K). Holdings down 12% to 210,723 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 11, 2026 |
| Mar 4, 2026 | Sale | Philippe Hoffmann (President / COO) sold 80,000 shares at about $26.45 ($2.1M). Holdings down 59% to 55,425 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 6, 2026 |
| Feb 27, 2026 | Sale | Stephane Corre (President / COO) sold 3,000 shares at about $24.69 ($74K). Holdings down 6% to 44,444 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 3, 2026 |
| Feb 26, 2026 | Sale | Isabelle Boccon-Gibod (Director) sold 10,000 shares at about $25.77 ($258K). Holdings down 30% to 23,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 27, 2026 |
| Feb 25, 2026 | Sale | Stephane Corre (President / COO) sold 3,200 shares at about $25.71 ($82K). Holdings down 6% to 47,444 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 27, 2026 |
| Feb 23, 2026 | Sale | Stephen Charles Walters (SVP GC & Secretary) sold 1,500 shares at about $25.39 ($38K). Holdings down 100% to 0 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 24, 2026 |
| Feb 20, 2026 | Sale | Marcus Becker (SVP CPO) sold 15,570 shares at about $25.58 ($398K). Holdings down 100% to 0 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 24, 2026 |
19 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
2 insiders bought in 30 days
$126K in purchases since May 1, 2026 · Purchases traded May 1, 2026 to May 14, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Jean-Christophe Deslarzes (Director) | $41K | May 1, 2026 | SEC filing |
| Bradley Lee Soultz (Director) | $85K | May 14, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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