CSTMCIK 1563411

CONSTELLIUM SE

EDGAR filings

Customers

1 disclosed, 1 prime contractor

Suppliers

None disclosed

Largest customer

—

No % disclosed

Named-customer revenue

—

No estimate available

Latest period

Dec 31, 2025

20-F filed 2026-03-05

Band height is the estimated dollar value: the disclosed share × the discloser's revenue for that period (latest full year where available) or federal dollars obligated. Each side is scaled on its own; dashed outlines are named without a figure. Click a band to open its source.

Customers 1

Companies CSTM discloses as major customers, as a share of CSTM revenue. 1 active, 0 lapsed.

Company	% of CSTM revenue	Est. revenue	Period	Trend	Status	Source
AMBP Ardagh Metal Packaging S.A.	Named	—	FY 2025-12-31	—	Active	20-F 2026-03-05
Our major aluminum suppliers include Novelis, Speira, Tri-Arrows, Constellium, Aluminium Dynamics and Kaiser Aluminum. 20-F filed 2026-03-05 Period FY 2025-01-01 to 2025-12-31Accession 0001104659-26-024068

Federal subcontracts received 1

Prime contractors that subcontracted federal work to this company. From USAspending.gov subaward reports; amounts are as reported by the prime contractor, latest report per subaward, $500K+ a year.

Company	Subawards	Fiscal year	Count	Trend	Largest subaward
BA BOEING CO	$6.9M	FY 2025	1		80MSFC20C0052
COMMON AEROSPACE COMMODITIES Prime award 80MSFC20C0052 on USAspending.gov ↗ Subaward 2614866: $6.9M · National Aeronautics and Space Administration (NASA)

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