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Constellium SE stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+41.4% to $21.81
Constellium SE (CSTM) stock rose 41% over the last 252 sessions, to $21.81. On the way it reported 4 quarters, its insiders filed 30 open-market trades, and the company filed 0 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Nov 2, 2026 | Insider buy | Deslarzes Jean-Christophe bought $42K | −0.6% (−0.1% vs SPY) | −5.8% (−3.0% vs SPY) | — |
| Oct 28, 2026 | Earnings | Earnings: missed the EPS estimate by -4.3% | −0.5% (−0.9% vs SPY) | −6.4% (−4.4% vs SPY) | — |
| Aug 3, 2026 | Insider buy | Deslarzes Jean-Christophe bought $41K | +2.3% (+0.9% vs SPY) | +5.8% (+2.4% vs SPY) | −5.0% (−7.6% vs SPY) |
| Jul 29, 2026 | Earnings | Earnings: beat the EPS estimate by 61.4% | −5.1% (−3.6% vs SPY) | +2.1% (−2.0% vs SPY) | −6.7% (−10.1% vs SPY) |
| Jun 4, 2026 | Insider sale | Ormerod John sold $280K | +0.8% (+0.4% vs SPY) | −9.4% (−5.5% vs SPY) | −17.2% (−17.1% vs SPY) |
| May 28, 2026 | Insider sale | Becker Marcus sold $363K | +1.1% (+0.6% vs SPY) | +5.4% (+4.9% vs SPY) | −6.6% (−4.0% vs SPY) |
| May 14, 2026 | Insider buy | Soultz Bradley Lee bought $85K | −3.1% (−3.9% vs SPY) | −7.3% (−7.1% vs SPY) | +3.0% (+3.0% vs SPY) |
| May 14, 2026 | Insider sale | Jarrett Martin sold $158K | −3.1% (−3.9% vs SPY) | −7.3% (−7.1% vs SPY) | +3.0% (+3.0% vs SPY) |
| May 12, 2026 | Insider sale | Piquier Ludovic sold $34K | −2.6% (−2.5% vs SPY) | −5.9% (−5.8% vs SPY) | −4.6% (−2.8% vs SPY) |
| May 11, 2026 | Insider sale | Brun Nicolas sold $902K | +0.9% (+0.7% vs SPY) | −6.0% (−6.2% vs SPY) | +0.4% (+0.4% vs SPY) |
| May 8, 2026 | Insider sale | Corre Stephane sold $168K | +3.0% (+2.2% vs SPY) | +1.9% (−0.4% vs SPY) | +3.9% (+2.9% vs SPY) |
| May 5, 2026 | Insider sale | Guo Jack Q. sold $822K | +6.7% (+5.8% vs SPY) | +10.3% (+7.4% vs SPY) | +15.1% (+10.2% vs SPY) |
| May 5, 2026 | Insider sale | Brandjes Michiel sold $325K | +6.7% (+5.8% vs SPY) | +10.3% (+7.4% vs SPY) | +15.1% (+10.2% vs SPY) |
| May 1, 2026 | Insider sale | Jurkovic Philip Ryan sold $1.6M | +2.3% (+2.0% vs SPY) | +5.0% (+3.2% vs SPY) | +10.4% (+5.0% vs SPY) |
| May 1, 2026 | Insider sale | Hoffmann Philippe sold $1.6M | +2.3% (+2.0% vs SPY) | +5.0% (+3.2% vs SPY) | +10.4% (+5.0% vs SPY) |
| May 1, 2026 | Insider buy | Deslarzes Jean-Christophe bought $41K | +2.3% (+2.0% vs SPY) | +5.0% (+3.2% vs SPY) | +10.4% (+5.0% vs SPY) |
| May 1, 2026 | Insider sale | Corre Stephane sold $160K | +2.3% (+2.0% vs SPY) | +5.0% (+3.2% vs SPY) | +10.4% (+5.0% vs SPY) |
| Apr 29, 2026 | Earnings | Earnings: beat the EPS estimate by 101.6% | +3.6% (+3.6% vs SPY) | +5.9% (+4.2% vs SPY) | +10.0% (+4.2% vs SPY) |
| Mar 16, 2026 | Insider sale | Becker Marcus sold $251K | +2.8% (+1.8% vs SPY) | −9.5% (−7.7% vs SPY) | +21.5% (+16.5% vs SPY) |
| Mar 10, 2026 | Insider sale | Jurkovic Philip Ryan sold $774K | +1.2% (+1.3% vs SPY) | +0.5% (+1.9% vs SPY) | +13.7% (+13.7% vs SPY) |
| Mar 10, 2026 | Insider sale | Joerg Ingrid sold $119K | +1.2% (+1.3% vs SPY) | +0.5% (+1.9% vs SPY) | +13.7% (+13.7% vs SPY) |
| Mar 10, 2026 | Insider sale | Hoffmann Philippe sold $122K | +1.2% (+1.3% vs SPY) | +0.5% (+1.9% vs SPY) | +13.7% (+13.7% vs SPY) |
| Mar 10, 2026 | Insider sale | Guo Jack Q. sold $1.1M | +1.2% (+1.3% vs SPY) | +0.5% (+1.9% vs SPY) | +13.7% (+13.7% vs SPY) |
| Mar 10, 2026 | Insider sale | Corre Stephane sold $39K | +1.2% (+1.3% vs SPY) | +0.5% (+1.9% vs SPY) | +13.7% (+13.7% vs SPY) |
| Mar 10, 2026 | Insider sale | Becker Marcus sold $29K | +1.2% (+1.3% vs SPY) | +0.5% (+1.9% vs SPY) | +13.7% (+13.7% vs SPY) |
| Mar 9, 2026 | Insider sale | Brun Nicolas sold $437K | +1.8% (+0.9% vs SPY) | −0.6% (+0.9% vs SPY) | +9.1% (+10.8% vs SPY) |
| Mar 4, 2026 | Insider sale | Hoffmann Philippe sold $2.1M | +3.0% (+2.3% vs SPY) | −1.3% (−0.9% vs SPY) | +5.6% (+9.1% vs SPY) |
| Mar 2, 2026 | Insider buy | Deslarzes Jean-Christophe bought $41K | +4.6% (+4.5% vs SPY) | −0.6% (+1.4% vs SPY) | −7.7% (+0.3% vs SPY) |
| Feb 27, 2026 | Insider sale | Corre Stephane sold $74K | −4.2% (−3.7% vs SPY) | +1.5% (+2.7% vs SPY) | −10.5% (−2.4% vs SPY) |
| Feb 26, 2026 | Insider sale | Boccon-Gibod Isabelle sold $258K | −0.1% (+0.4% vs SPY) | +2.4% (+3.6% vs SPY) | −8.2% (−1.3% vs SPY) |
| Feb 25, 2026 | Insider sale | Corre Stephane sold $82K | +4.9% (+4.1% vs SPY) | +4.3% (+5.3% vs SPY) | +3.0% (+7.3% vs SPY) |
| Feb 23, 2026 | Insider sale | Walters Stephen Charles sold $38K | −0.2% (+0.8% vs SPY) | −2.2% (−1.7% vs SPY) | −6.5% (−1.7% vs SPY) |
| Feb 20, 2026 | Insider sale | Becker Marcus sold $398K | −1.4% (−2.2% vs SPY) | +0.6% (−0.1% vs SPY) | −14.3% (−9.1% vs SPY) |
| Feb 18, 2026 | Earnings | Earnings: beat the EPS estimate by 113.0% | +9.1% (+8.6% vs SPY) | +5.6% (+4.9% vs SPY) | +5.2% (+8.4% vs SPY) |
Insiders’ record here
In the year on the chart, Constellium SE's insiders reported 5 open-market buys ($250K) and 25 sales ($12.2M). Of the 29 old enough to score, 12 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was −15.4% and after a sale +21.7%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
Report card: every quarter against the estimate → Constellium SE: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.