Constellium SE SEC filings CSTM
Constellium SE has 507 filings in SEC EDGAR's recent list, going back to Dec 3, 2012. Its latest annual report, Form ARS, was filed on Apr 10, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 28, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| DEFA14A | Additional proxy material | Apr 10, 2026 | — |
| DEF 14A | Proxy statement | Apr 10, 2026 | Dec 31, 2025 |
| PRE 14A | Preliminary proxy statement | Mar 30, 2026 | Dec 31, 2025 |
Showing 3 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Secondary Smelting & Refining of Nonferrous Metals (SIC 3341)
- Listed as
- CSTM (NYSE)
- Fiscal year ends
- December 31
- Headquarters
- Paris, France
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1563411
- Former names
- Constellium N.V. (until Jun 28, 2019); Constellium Holdco B.V. (until May 17, 2013)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.