CSTM Constellium (CSTM) Insider Trading, Ownership & Congress Trades
Mining & Metals · Secondary smelting & refining of nonferrous metals · CIK 0001563411
SEC filings
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
260
13F, latest reported quarter
What the filings say about CSTM
Insiders, 180 days
-$6.2M net sold
2 buyers · 10 sellers · 0% of sales under a 10b5-1 plan
Constellium insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, CONSTELLIUM SE insiders sold a net $6.2M of stock across 30 Form 4 purchases and sales, with 2 insiders buying. Source: SEC Form 4 filings, as of 2026-10-28.
Insider
Filed
Shares
Value
Since filing
Context
- 2 earlier Form 4 trades (code P or S) here by this insider (2 buys), the last on May 1, 2026.
- +11.2% median (+11.2% mean) 90-day return after 2 previous buys.
- The trade is 3.4% of the 43,515 shares held after it.
- No other insider bought within 30 days.
- 260 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Deslarzes Jean-Christophe bought about $40.6K of CSTM on Aug 3, 2026; 260 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 32.2% of the 24,873 shares held after it.
- 7 other insiders sold within 30 days.
- 260 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Ormerod John sold about $280.1K of CSTM on Jun 4, 2026; 7 other insiders sold within 30 days and 260 funds added in the latest 13F quarter.Context
- 3 earlier Form 4 trades (code P or S) here by this insider (3 sales), the last on Mar 16, 2026.
- The trade is 61.9% of the 16,784 shares held after it.
- 9 other insiders sold within 30 days.
- 260 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP CPO Becker Marcus sold about $363.0K of CSTM on May 28, 2026; 9 other insiders sold within 30 days and 260 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 100.0% of the 2,500 shares held after it.
- 1 other insider bought within 30 days.
- 260 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Soultz Bradley Lee bought about $84.6K of CSTM on May 14, 2026, the largest insider purchase at the company on our record; 1 other insider bought within 30 days and 260 funds added in the latest 13F quarter.Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 30.7% of the 15,375 shares held after it.
- 9 other insiders sold within 30 days.
- 260 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP Chief Innovation Officer Jarrett Martin sold about $157.8K of CSTM on May 14, 2026; 9 other insiders sold within 30 days and 260 funds added in the latest 13F quarter.30 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net -$6.2M over 180 days
+$40.6K over 90 days
below 80% of Mining & Metals
Congress
no House purchase disclosed in the last 12 months
Funds
260 funds bought in last quarter
more than 84% of Mining & Metals
Revenue
+15.2% year over year
more than 70% of Mining & Metals
Margin
3.2% net margin
more than 52% of Mining & Metals
Buybacks
$28.0M repurchased, FY to 2026-03-31
more than 56% of Mining & Metals
Short interest
5.1% of the float short (float per yahoo 2026-10-26) · 3.5 days to cover · settled 2026-09-30
more than 68% of Mining & Metals
What changed in the last 30 days
Oct 28Insider selling stopped: no sales in 90 days after 8 in the prior 90
Why it matters
The absence is the signal: 8 sales in one 90-day window and none in the next is a change of behaviour, not a filing.
Watch CSTM
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
+40.2%12M
Insider buyInsider sell
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns CSTM: institutional holders (13F)
13F holdings, latest reported quarter
12,802,322 sh
$408.0M
8,403,903 sh
$267.8M
6,183,255 sh
$197.1M
4,391,756 sh
$140.0M
4,220,743 sh
$134.5M
Congress trades in CSTM
No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
CSTM planned insider sales (Form 144)
No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
CSTM mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Inspire Fidelis Multi Factor ETF
$2.6M position · as of 2026-05-31
1.3%
Knights of Columbus Small Cap Equity Fund
$2.6M position · as of 2026-07-31
1.2%
WESTWOOD QUALITY SMALLCAP FUND
$9.1M position · as of 2026-07-31
1.0%
SIMT Multi-Strategy Alternatives Fund
$2.2M position · as of 2026-06-30
0.9%
Timothy Plan Small Cap Value Fund
$1.6M position · as of 2026-06-30
0.9%
NORTH SQUARE DYNAMIC SMALL CAP FUND
$5.9M position · as of 2026-05-31
0.8%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return · Jean-Marc Germain
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2025
$30.2M
$23.4M
$3.3M
+5%
+24%
2024
$8.9M
-$5.3M
$2.2M
-43%
+10%
2023
$10.0M
$23.0M
$2.8M
+11%
+10%
2022
$8.9M
-$3.4M
$2.6M
-34%
-7%
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
The complete filing record, in one place.
The record shows a net $6.2M sold by insiders over 180 days, 260 funds added last quarter. Each figure is a federal filing, dated the day it went public.
CSTM financials
Revenue growth
+15.2%
XBRL, annual
Net margin
3.2%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$8.9B
four quarters, 2025-04-01 to 2026-03-31
Revenue, TTM CSTM
| FY Dec 2025 | $8.4B |
| FY Dec 2024 | $7.3B |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | $2.5B |
| Dec 2025 | $2.2B |
| Sep 2025 | $2.2B |
| Jun 2025 | $2.1B |
| Mar 2025 | $2.0B |
| Dec 2024 | $1.7B |
| Sep 2024 | $1.8B |
| Jun 2024 | $1.9B |
At each fiscal year end
Single quarter
Net margin, TTM
+4.9%
net income over revenue, 2025-04-01 to 2026-03-31
Net margin, TTM CSTM
| FY Dec 2025 | +3.2% |
| FY Dec 2024 | +0.8% |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | +8.1% |
| Dec 2025 | +5.1% |
| Sep 2025 | +4.1% |
| Jun 2025 | +1.7% |
| Mar 2025 | +1.9% |
| Dec 2024 | -2.8% |
| Sep 2024 | +0.4% |
| Jun 2024 | +3.9% |
At each fiscal year end
Single quarter
Free cash flow, TTM
$171.0M
operating cash flow minus capex, 2025-04-01 to 2026-03-31
Free cash flow, TTM CSTM
| FY Dec 2025 | $159.0M |
| FY Dec 2024 | -$112.0M |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | $1.0M |
| Dec 2025 | $109.0M |
| Sep 2025 | $24.0M |
| Jun 2025 | $37.0M |
| Mar 2025 | -$11.0M |
| Dec 2024 | -$90.0M |
| Sep 2024 | -$39.0M |
| Jun 2024 | $54.0M |
At each fiscal year end
Single quarter
Debt to equity
1.76x
long-term 2026-03-31 plus current 2026-03-31; equity 2026-03-31
Debt to equity CSTM
| FY Dec 2025 | 2.04x |
| FY Dec 2024 | 2.72x |
| FY Dec 2023 | 2.69x |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | 1.76x |
| Dec 2025 | 2.04x |
| Sep 2025 | 2.38x |
| Jun 2025 | 2.60x |
| Mar 2025 | 2.61x |
| Dec 2024 | 2.72x |
| Sep 2024 | 2.40x |
| Jun 2024 | 2.42x |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
0.26x
TTM operating cash flow over long-term 2026-03-31 plus current 2026-03-31
Cash flow to debt CSTM
| FY Dec 2025 | 0.25x |
| FY Dec 2024 | 0.16x |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | 0.26x |
| Dec 2025 | 0.25x |
| Sep 2025 | 0.17x |
| Jun 2025 | 0.15x |
| Mar 2025 | 0.17x |
| Dec 2024 | 0.16x |
| Sep 2024 | n/a |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
+46.7%
TTM net income over average of 2025-03-31 and 2026-03-31
Return on equity CSTM
| FY Dec 2025 | +32.9% |
| FY Dec 2024 | +7.9% |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | +46.7% |
| Dec 2025 | +32.9% |
| Sep 2025 | +13.7% |
| Jun 2025 | +4.1% |
| Mar 2025 | +9.6% |
| Dec 2024 | +7.9% |
| Sep 2024 | n/a |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
+7.9%
TTM net income over average of 2025-03-31 and 2026-03-31
Return on assets CSTM
| FY Dec 2025 | +5.4% |
| FY Dec 2024 | +1.2% |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | +7.9% |
| Dec 2025 | +5.4% |
| Sep 2025 | +2.1% |
| Jun 2025 | +0.6% |
| Mar 2025 | +1.4% |
| Dec 2024 | +1.2% |
| Sep 2024 | n/a |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
n/a
fewer than four consecutive quarters of operating income
Return on invested capital CSTM
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
n/a
fewer than four consecutive quarters of operating income
Return on capital employed CSTM
| FY Dec 2025 | n/a |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
7.60x
close 2026-10-26 over four quarters of diluted EPS, 2025-04-01 to 2026-03-31
P/E, trailing CSTM
| FY Dec 2025 | 9.82x |
| FY Dec 2024 | 27.03x |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | 7.98x |
| Dec 2025 | 9.82x |
| Sep 2025 | 18.37x |
| Jun 2025 | 55.42x |
| Mar 2025 | 20.18x |
| Dec 2024 | 27.03x |
| Sep 2024 | n/a |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$5.0B
market value at close 2026-10-26 on 2026-03-31 shares, plus long-term 2026-03-31 plus current 2026-03-31, minus cash 2026-03-31
Enterprise value CSTM
| FY Dec 2025 | $4.4B |
| FY Dec 2024 | $3.3B |
| FY Dec 2023 | $4.6B |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | $5.2B |
| Dec 2025 | $4.4B |
| Sep 2025 | $3.9B |
| Jun 2025 | $3.7B |
| Mar 2025 | $3.3B |
| Dec 2024 | $3.3B |
| Sep 2024 | $4.1B |
| Jun 2024 | $4.5B |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
+5.4%
TTM free cash flow over market value at close 2026-10-26
FCF yield CSTM
| FY Dec 2025 | +6.1% |
| FY Dec 2024 | -7.6% |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | +5.1% |
| Dec 2025 | +6.1% |
| Sep 2025 | -2.0% |
| Jun 2025 | -5.5% |
| Mar 2025 | -6.0% |
| Dec 2024 | -7.6% |
| Sep 2024 | n/a |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
0.01x
P/E over trailing EPS growth of 516%: four quarters to 2026-03-31 against the four to 2025-03-31
PEG, trailing CSTM
| FY Dec 2025 | 0.02x |
| FY Dec 2024 | n/a |
| FY Dec 2023 | n/a |
| FY Dec 2022 | n/a |
| FY Dec 2021 | n/a |
| Mar 2026 | 0.02x |
| Dec 2025 | 0.02x |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
| Jun 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2025-12 | 2024-12 | 2023-12 | 2022-12 | |
|---|---|---|---|---|
| Revenue | $8.4B | $7.3B | $7.8B | $8.5B |
| Gross profit | n/a | n/a | $710.0M | $672.0M |
| Net income | $273.0M | $56.0M | $152.0M | $308.0M |
| EPS (diluted) | 1.92 | 0.38 | 1.03 | 2.10 |
| Operating cash flow | $489.0M | $301.0M | $432.0M | $365.0M |
| Cash | $120.0M | $141.0M | $223.0M | n/a |
| Long-term debt | $1.9B | $1.9B | $1.9B | n/a |
| Buybacks | $115.0M | $79.0M | $0 | $0 |
SEC XBRL, fiscal years, as known on 2026-10-28
CSTM Stock Sonar score 6/7 axes
Find similar shapesCompareCSTM ranks highest on profitability (88th percentile) and institutional and government (84th), and lowest on financial health (35th), among Mining & Metals peers.
6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
CSTM filings, in plain words
Are Constellium insiders buying or selling CSTM?
In the 180 days to 2026-10-28, Constellium insiders were net sellers, a net $6.2M: $166.4K of purchases and $6.4M of sales reported on Form 4, by 2 buyers and 10 sellers.
Read the full summary
In the 180 days to 2026-10-28, Constellium insiders were net sellers of CSTM, a net $6.2M across purchases and sales reported on Form 4 by 2 buyers and 10 sellers. Sales outweighed purchases more than tenfold by value. None of the 11 insider sales was flagged as made under a Rule 10b5-1 plan. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.
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