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Insider Trading Intelligence
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Nicolas Brun

CSTM
SVP PA, COMM & SUST · CONSTELLIUM SE · CIK 0002093242
FILING MIX · LIFETIME50%/50%
BUYS
2
SELLS
2
TOTAL VALUE
$1.34M
COMPANIES
1
ACTIVE SINCE
Mar 2026
HOLDINGS NOW
104,891
AVG SELL PX
$30.19
TRADE KIND
SHOWING 4 / 4
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
2 backtested trades · 8 horizons · 8 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Nicolas Brun, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d2+50.00%-2.40%-0.48%-1.92%-1.92%
14d2+100.00%-5.87%-3.38%-2.02%-2.02%
30d2+50.00%+7.31%-0.32%+7.63%+7.63%
60d2(1 pending)+0.00%+34.50%+8.75%+25.75%+25.75%
90d2(1 pending)+0.00%+34.54%+8.72%+25.82%+25.82%
180d2(2 pending)
1y2(2 pending)
2y2(2 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
CSTM · 104,891 shares · as of May 11, 2026
032,88865,77698,664131,552SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2026
2026
FLOW · 2 buys / 2 sellsCOVERAGE · 2 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CSTM
CONSTELLIUM SE
SALE
SVP PA, Comm & Sust
26,661$33.85$902.5K104,891May 11, 2026May 12, 2026View →
CSTM
CONSTELLIUM SE
PURCHASEGRANT
Stock grant
4,376131,552Mar 12, 2026Mar 16, 2026View →
CSTM
CONSTELLIUM SE
SALE
SVP PA, Comm & Sust
17,701$24.67$436.7K103,466Mar 9, 2026Mar 11, 2026View →
CSTM
CONSTELLIUM SE
PURCHASEGRANT
Stock grant
23,710127,176Mar 9, 2026Mar 11, 2026View →
Other insiders · CSTM
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About this filer
CIK 0002093242
ROLE
SVP PA, Comm & Sust
PRIMARY
CSTM
COMPANIES
1
ACTIVE SINCE
Mar 2026
MARKETPEEL · /INSIDER/0002093242DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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