Insider Cluster (1 insider) ·Filed Feb 26, 2026

CSTM

CONSTELLIUM SE
NEUTRAL
Impact 4/10
Horizondays Processed7mo ago
Insider cluster: 3 insiders, $1.6M total
Actionable Insight • Neutral

Monitor for follow-up transactions from other executives; while this sale is notable, it falls within typical ranges for executive liquidity events and does not signal distress given its size relative to company market cap.

DirectionNeutral
Confidencehigh
Horizondays
Final — all horizons settled through T+60d
CSTM ▲ +23.47% at T+60d
NEUTRAL call ✓ call won +23.47% · α vs SPY +15.72% · entry $25.95 → $32.04
Entry anchored
Feb 25, 03:59 PM ET
via exchange tick
T+1d
-4.08%
call -4.08% · α -3.63%
$24.89
settled 7mo ago
T+5d
+1.50%
call +1.50% · α +2.63%
$26.34
settled 7mo ago
T+20d
-7.71%
call -7.71% · α -1.30%
$23.95
settled 6mo ago
T+60d
+23.47%
call +23.47% · α +15.72%
$32.04
settled 5mo ago

Price Chart

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Executive Summary

Philippe Hoffmann, President of the Aerospace & Transportation segment at Constellium, sold 50,000 shares in an open-market transaction for $1.3 million. This single transaction accounts for the majority of recent insider selling activity over the past 30 days, representing a material but not substantial portion of his holdings.

Key Financial Metrics

Direction
selling
Total Value
$1.3M
Insiders
1

Key Facts

  • Philippe Hoffmann (President, A&T) sold 50,000 shares on March 4, 2026, at $26.03 per share.
  • Total transaction value: $1,301,500.
  • This was an open-market sale (Form 4 code 'S'), not a pre-arranged plan or tax-related disposition.
  • No other insiders at Constellium conducted open-market trades in the past 7 days.
  • Recent 30-day insider activity shows three total sells amounting to $1.6M, indicating modest ongoing divestment.

Financial Impact

$1.3 million in open-market selling by a segment president

insider ownershipinvestor sentiment

Risk Factors

  • Perception of insider pessimism if no further context is provided.
  • Potential for increased selling pressure if other insiders follow.

Market Snapshot

Exchange
NYSE

Investment Themes

Materials & Mining

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CONTEXT: Insider Cluster Data (1 trades, 7d window)cluster-CSTM-1772804004179
21 reports for CSTM
Performance horizon
33% Hit rate 2 of 6 directional calls best @ T+20▲ +12.34%Apr 15, 2026
Filters
Rows
Reports for CSTM — sortable, filterable
TypeNow
Jul 10, 2026
12w ago
Press Release
NEUTRAL ★ 2/10
$29.28 $29.44▲ +0.55%▼ −1.88%$24.66 (−15.78%)
May 26, 2026
18w ago
Press Release
BULLISH ★ 7/10
$35.28 $32.81▼ −7.00%▼ −5.05%$24.66 (−30.10%)
May 18, 2026
19w ago
Insider Cluster
NEUTRAL ★ 3/10
$32.25 $34.18▲ +5.98%▲ +4.40%$24.66 (−23.53%)
May 5, 2026
21w ago
Insider Cluster
NEUTRAL ★ 3/10
$32.96 $36.07▲ +9.44%▲ +4.48%$24.66 (−25.18%)
May 1, 2026
22w ago
Insider Cluster
NEUTRAL ★ 4/10
$32.01 $34.69▲ +8.37%▲ +3.09%$24.66 (−22.96%)
May 1, 2026
22w ago
Insider Cluster
NEUTRAL ★ 5/10
$32.01 $34.69▲ +8.37%▲ +3.09%$24.66 (−22.96%)
May 1, 2026
22w ago
Insider Cluster
NEUTRAL ★ 3/10
$32.01 $34.69▲ +8.37%▲ +3.09%$24.66 (−22.96%)
May 1, 2026
22w ago
Insider Cluster
NEUTRAL ★ 3/10
$32.01 $34.69▲ +8.37%▲ +3.09%$24.66 (−22.96%)
May 1, 2026
22w ago
Insider Cluster
NEUTRAL ★ 2/10
$32.01 $34.69▲ +8.37%▲ +3.09%$24.66 (−22.96%)
Apr 29, 2026
22w ago
Press Release
BULLISH ★ 8/10
$32.23 $33.96▲ +5.37%▼ −0.09%$24.66 (−23.49%)
Showing 10 of 21

US Market Status

Market Closed — Opens Mon (36h 13m)

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Report published Mar 6, 2026