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Insider Trading Intelligence
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Marcus Becker

CSTM
SVP CPO · CONSTELLIUM SE · CIK 0002092960
FILING MIX · LIFETIME33%/67%
BUYS
2
SELLS
4
TOTAL VALUE
$1.04M
COMPANIES
1
ACTIVE SINCE
Feb 2026
HOLDINGS NOW
16,784
AVG SELL PX
$28.08
TRADE KIND
SHOWING 6 / 6
Trades · vs SPY
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Performance · forward returns vs SPY
4 backtested trades · 8 horizons · 12 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Marcus Becker, 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
7d4+100.00%-2.20%-1.21%-0.98%-0.99%
14d4+75.00%-5.08%-3.73%-1.35%-1.13%
30d4+50.00%+10.26%-0.06%+10.32%+13.73%
60d4+25.00%+30.42%+7.69%+22.73%+24.77%
90d4+25.00%+32.32%+9.50%+24.49%+24.06%
180d4(4 pending)
1y4(4 pending)
2y4(4 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 · 16,784 shares · as of May 28, 2026
09,29418,58827,88137,175SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2026
2026
FLOW · 2 buys / 4 sellsCOVERAGE · 2 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CSTM
CONSTELLIUM SE
SALE
SVP CPO
10,391$34.93$363.0K16,784May 28, 2026Jun 1, 2026View →
CSTM
CONSTELLIUM SE
SALE
SVP CPO
10,000$25.09$250.9K27,175Mar 16, 2026Mar 17, 2026View →
CSTM
CONSTELLIUM SE
PURCHASEGRANT
Stock grant
3,93837,175Mar 12, 2026Mar 16, 2026View →
CSTM
CONSTELLIUM SE
SALE
SVP CPO
1,113$25.87$28.8K33,237Mar 10, 2026Mar 11, 2026View →
CSTM
CONSTELLIUM SE
PURCHASE
SVP CPO
14,59234,350Mar 9, 2026Mar 11, 2026View →
CSTM
CONSTELLIUM SE
SALE
SVP CPO
15,570$25.58$398.3K0Feb 20, 2026Feb 24, 2026View →
Other insiders · CSTM
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About this filer
CIK 0002092960
ROLE
SVP CPO
PRIMARY
CSTM
COMPANIES
1
ACTIVE SINCE
Feb 2026
MARKETPEEL · /INSIDER/0002092960DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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