v3.26.1
Pay vs Performance Disclosure - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Pay vs Performance Disclosure        
Pay vs Performance Disclosure, Table
Year
Summary
Compensation
Table Total
for PEO(1)
Compensation
Actually Paid
to PEO(2)
Average
Summary
Compensation
Table Total
for Non-PEO
NEOs(3)
Average
Compensation
Actually Paid
to Non-PEO
NEOs(3) (4)
Value of Initial
Fixed $100
Investment Based
On:
Company
Net Income
($M)(7)
EPA
 Segment Adjusted
EBITDA
($M)(8)
Company
TSR(5)
Index
TSR(6)
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
2025$30,171,859 $23,364,716 $3,309,743 $6,452,675 105 124 275 719 
2024$8,881,752 $(5,262,772)$2,210,067 $(198,956)57 110 60 587 
2023$9,962,993 $23,041,552 $2,782,785 $4,450,187 111 110 157 756 
2022$8,939,010 $(3,430,929)$2,607,284 $216,040 66 93 315 707 
     
Company Selected Measure Name EPA Segment Adjusted EBITDA      
Peer Group Issuers, Footnote
(6)    Reflects total shareholder return indexed to $100 for the S&P 600 Materials Index (“Peer Group TSR”), which is an industry line peer group reported for the year ended December 31, 2025, and assuming reinvestment of all dividends, where applicable.
     
PEO Total Compensation Amount $ 30,171,859 $ 8,881,752 $ 9,962,993 $ 8,939,010
PEO Actually Paid Compensation Amount $ 23,364,716 (5,262,772) 23,041,552 (3,430,929)
Adjustment To PEO Compensation, Footnote The dollar amounts reported in column (c) represent the amount of CAP for Mr. Germain for each corresponding year, as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts reported do not reflect the actual amount of compensation earned by or paid to Mr. Germain during the applicable year. As computed in accordance with Item 402(v) of Regulation S-K, the following adjustments were made to Mr. Germain’s total compensation for each year to determine the CAP values for Mr. Germain:
Year
SCT
Total for
PEO
Minus SCT
Change in
Pension
Value for
PEO
Plus
Pension
Value
Service
Cost
Minus SCT
Equity for
PEO
Plus
(Minus)
EOY Fair
Value of
Equity
Awards
Granted
During
Fiscal Year
that are
Outstanding
and
Unvested at
EOY
Plus
(Minus)
Change
from BOY
to EOY in
Fair Value
of Awards
Granted in
Any Prior
Fiscal Year
that are
Outstanding
and
Unvested at
EOY
Plus
(Minus)
Change in
Fair Value
from BOY
to Vesting
Date of
Awards
Granted in
Any Prior
Fiscal Year
that Vested
During the
Fiscal Year
Minus Fair Value at BOY of Awards Granted in Prior Year that were Forfeited During the Fiscal Year
PEO CAP
2025$30,171,859 $— $— $26,354,236 $8,855,046 $10,626,248 $186,085 $(120,286)$23,364,716 
2024$8,881,752 $— $— $6,915,992 $2,165,146 $(9,595,771)$202,093 $— $(5,262,772)
2023$9,962,993 $— $— $6,452,077 $8,989,200 $7,431,950 $3,109,486 $— $23,041,552 
2022$8,939,010 $— $— $5,662,557 $2,453,831 $(9,573,067)$411,854 $— $(3,430,929)
     
Non-PEO NEO Average Total Compensation Amount $ 3,309,743 2,210,067 2,782,785 2,607,284
Non-PEO NEO Average Compensation Actually Paid Amount $ 6,452,675 (198,956) 4,450,187 216,040
Adjustment to Non-PEO NEO Compensation Footnote
(4)    The dollar amounts reported in column (e) represent the amount of CAP for the non-PEO NEOs, as computed in accordance with Item 402(v) of Regulation S-K. The dollar amounts reported do not reflect the actual amount of compensation earned by or paid to these executive officers during the applicable year. As computed in accordance with Item 402(v) of Regulation S-K, the following adjustments were made to the non-PEO NEOs’ total compensation for each year to determine the compensation actually paid:
Year
SCT
Total for
Average
Non-PEO
NEOs
Minus SCT
Change in
Pension
Value for
Average
Non-PEO
NEOs
Plus
Pension
Value
Service
Cost
Minus SCT
Equity for
Average
Non-PEO
NEOs
Plus
(Minus)
EOY Fair
Value of
Equity
Awards
Granted
During
Fiscal Year
that are
Outstanding
and
Unvested at
EOY
Plus
(Minus)
Change
from BOY
to EOY in
Fair Value
of Awards
Granted in
Any Prior
Fiscal Year
that are
Outstanding
and
Unvested at
EOY
Plus
(Minus)
Change in
Fair Value
from BOY
to Vesting
Date of
Awards
Granted in
Any Prior
Fiscal Year
that Vested
During the
Fiscal Year
Average
Non-PEO
NEOs CAP
2025$3,309,743 $(62,239)$14,107 $1,521,393 $2,735,006 $1,951,565 $25,884 $6,452,675 
2024$2,210,067 $(94,505)$11,769 $1,132,487 $394,237 $(1,614,630)$26,593 $(198,956)
2023$2,782,785 $(104,288)$10,166 $1,311,430 $1,774,887 $995,469 $302,598 $4,450,187 
2022$2,607,284 $— $11,797 $1,187,029 $529,669 $(1,818,052)$72,371 $216,040 
     
Compensation Actually Paid vs. Company Selected Measure
549755821042
549755821045
549755821047
     
Tabular List, Table
EPA Segment Adjusted EBITDA
EPA Adjusted Free Cash Flow
Relative Total Shareholder Return vs. S&P SmallCap 600 Materials Index and S&P MidCap 400 Materials Index
     
Total Shareholder Return Amount $ 105 57 111 66
Peer Group Total Shareholder Return Amount 124 110 110 93
Net Income (Loss) $ 275,000,000 $ 60,000,000 $ 157,000,000 $ 315
Company Selected Measure Amount 719,000,000 587,000,000 756,000,000 707
PEO Name Jean-Marc Germain      
Additional 402(v) Disclosure
(3)    Reflects compensation amounts reported for the non-PEO NEOs, in the Summary Compensation Table (“SCT”), who were as follows:
2025
2024
2023
2022
Jack Guo
Jack Guo
Jack Guo
Peter Matt
Ingrid Joerg
Ingrid Joerg
Ingrid Joerg
Ingrid Joerg
Phillipe Hoffman
Phillipe Hoffman
Phillipe Hoffman
Phillipe Hoffman
Ryan Jurkovic
Ryan Jurkovic
Ryan Jurkovic
Ryan Jurkovic
(7)    The dollar amounts reported represent the amount of net income (in millions) under U.S. GAAP reflected in Constellium’s 10-K filed on February 25, 2026.
     
Measure:: 1        
Pay vs Performance Disclosure        
Name EPA Segment Adjusted EBITDA      
Non-GAAP Measure Description
(8)    We determined EPA Segment Adjusted EBITDA as the “company-selected measure” (as previously defined). EPA Segment Adjusted EBITDA is a non-GAAP measure and as previously disclosed in “Compensation Discussion and Analysis—Elements of Executive Compensation” was set in USD and under GAAP in 2025, and for 2022-2024 was set in Euros and under IFRS when the Company was a foreign private issuer. For fiscal years 2025, 2024, 2023, and 2022, the EPA Segment Adjusted EBITDA was $720, €542, €699 and €673 respectively. In fiscal year 2023, for the purposes of EPA payout calculations, an adjustment of €13.8 was made to the Adjusted EBITDA of €713, resulting in EPA Segment Adjusted EBITDA of €699. For fiscal years 2022 - 2024, the column reflects the EPA Segment Adjusted EBITDA converted from EUR to USD using the average exchange rate for the respective years (1 euro to 1.0821 USD in fiscal year 2024; 1 euro to 1.0810 USD in fiscal year 2023; and 1 euro to 1.507 USD in fiscal year 2022). The rates are sourced from European Central Bank.
     
Measure:: 2        
Pay vs Performance Disclosure        
Name EPA Adjusted Free Cash Flow      
Measure:: 3        
Pay vs Performance Disclosure        
Name Relative Total Shareholder Return vs. S&P SmallCap 600 Materials Index and S&P MidCap 400 Materials Index      
PEO | Pension Adjustments Service Cost        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount $ 0 $ 0 $ 0 $ 0
PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount (26,354,236) (6,915,992) (6,452,077) (5,662,557)
PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount 8,855,046 2,165,146 8,989,200 2,453,831
PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount 10,626,248 (9,595,771) 7,431,950 (9,573,067)
PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount 186,085 202,093 3,109,486 411,854
PEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount (120,286) 0 0 0
PEO | Pension Adjustments [Member]        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount 0 0 0 0
Non-PEO NEO | Pension Adjustments Service Cost        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount 14,107 11,769 10,166 11,797
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount (1,521,393) (1,132,487) (1,311,430) (1,187,029)
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount 2,735,006 394,237 1,774,887 529,669
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount 1,951,565 (1,614,630) 995,469 (1,818,052)
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount 25,884 26,593 302,598 72,371
Non-PEO NEO | Pension Adjustments [Member]        
Pay vs Performance Disclosure        
Adjustment to Compensation, Amount $ (62,239) $ (94,505) $ (104,288) $ 0