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 |
|---|---|---|---|
| 10-Q | Quarterly report | Oct 28, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 28, 2026 | Oct 28, 2026 |
| 10-Q | Quarterly report | Jul 29, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 2026 |
| S-3ASR | Automatic shelf registration | Jun 24, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | May 28, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
May 21, 2026 | May 21, 2026 |
| 10-Q | Quarterly report | Apr 29, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2026 | Apr 29, 2026 |
| ARS | Annual report to shareholders | Apr 10, 2026 | Dec 31, 2025 |
| 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 |
| 8-K |
Current report
Other events
|
Mar 12, 2026 | Mar 12, 2026 |
| 10-K | Annual report | Feb 25, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 18, 2026 | Feb 18, 2026 |
| 10-Q | Quarterly report | Oct 29, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2025 | Oct 29, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 29, 2025 | Oct 29, 2025 |
| 10-Q | Quarterly report | Jul 31, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2025 | Jul 29, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 27, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
May 22, 2025 | May 15, 2025 |
| 10-Q | Quarterly report | Apr 30, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2025 | Apr 30, 2025 |
| 8-K |
Current report
Other events
|
Apr 15, 2025 | Apr 15, 2025 |
| 10-K/A | Amended annual report | Apr 15, 2025 | Dec 31, 2024 |
| 10-K | Annual report | Feb 28, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 20, 2025 | Feb 20, 2025 |
| 8-K |
Current report
Other events
|
Jan 15, 2025 | Jan 15, 2025 |
| 6-K | Current report (foreign issuer) | Oct 23, 2024 | Oct 23, 2024 |
| 6-K | Current report (foreign issuer) | Aug 27, 2024 | Aug 27, 2024 |
| 6-K | Current report (foreign issuer) | Jul 25, 2024 | Jul 25, 2024 |
| 6-K | Current report (foreign issuer) | Jul 24, 2024 | Jul 24, 2024 |
| 6-K | Current report (foreign issuer) | Jul 23, 2024 | Jun 30, 2024 |
| 6-K | Current report (foreign issuer) | Jul 23, 2024 | Jul 23, 2024 |
| 6-K | Current report (foreign issuer) | Jul 3, 2024 | Jul 3, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 28, 2024 | — |
| S-8 | Employee stock plan registration | May 16, 2024 | — |
| 6-K | Current report (foreign issuer) | May 14, 2024 | May 14, 2024 |
| 6-K | Current report (foreign issuer) | Apr 24, 2024 | Apr 24, 2024 |
| 6-K | Current report (foreign issuer) | Apr 12, 2024 | Apr 12, 2024 |
| F-3ASR | Filing | Mar 20, 2024 | — |
| 20-F | Annual report (foreign issuer) | Mar 18, 2024 | Dec 31, 2023 |
| UPLOAD | Letter from the SEC | Mar 5, 2024 | — |
| CORRESP | Letter to the SEC | Mar 1, 2024 | — |
| 6-K | Current report (foreign issuer) | Feb 21, 2024 | Feb 21, 2024 |
| UPLOAD | Letter from the SEC | Feb 19, 2024 | — |
| CORRESP | Letter to the SEC | Dec 20, 2023 | — |
| CORRESP | Letter to the SEC | Nov 29, 2023 | — |
| UPLOAD | Letter from the SEC | Nov 21, 2023 | — |
| CORRESP | Letter to the SEC | Oct 30, 2023 | — |
| 6-K | Current report (foreign issuer) | Oct 25, 2023 | Oct 25, 2023 |
| 6-K | Current report (foreign issuer) | Oct 5, 2023 | Oct 4, 2023 |
| CORRESP | Letter to the SEC | Oct 4, 2023 | — |
| UPLOAD | Letter from the SEC | Sep 29, 2023 | — |
| 6-K | Current report (foreign issuer) | Jul 27, 2023 | Jun 30, 2023 |
| 6-K | Current report (foreign issuer) | Jul 26, 2023 | Jul 26, 2023 |
| 6-K | Current report (foreign issuer) | Jul 18, 2023 | Jul 18, 2023 |
| 6-K | Current report (foreign issuer) | Jun 20, 2023 | Jun 20, 2023 |
| 6-K | Current report (foreign issuer) | Jun 15, 2023 | Jun 15, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| 6-K | Current report (foreign issuer) | May 24, 2023 | May 24, 2023 |
| 6-K | Current report (foreign issuer) | Apr 26, 2023 | Apr 26, 2023 |
| 20-F | Annual report (foreign issuer) | Mar 14, 2023 | Dec 31, 2022 |
| 6-K | Current report (foreign issuer) | Feb 22, 2023 | Feb 22, 2023 |
| 6-K | Current report (foreign issuer) | Feb 16, 2023 | Feb 16, 2023 |
| 6-K | Current report (foreign issuer) | Oct 26, 2022 | Oct 26, 2022 |
| 6-K | Current report (foreign issuer) | Jul 28, 2022 | Jun 30, 2022 |
| 6-K | Current report (foreign issuer) | Jul 27, 2022 | Jul 27, 2022 |
| 6-K | Current report (foreign issuer) | Jun 21, 2022 | Jun 21, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 27, 2022 | — |
| 6-K | Current report (foreign issuer) | May 24, 2022 | May 24, 2022 |
| 6-K | Current report (foreign issuer) | Apr 27, 2022 | Apr 27, 2022 |
| 6-K | Current report (foreign issuer) | Apr 6, 2022 | Apr 6, 2022 |
| 20-F | Annual report (foreign issuer) | Mar 14, 2022 | Dec 31, 2021 |
| 6-K | Current report (foreign issuer) | Feb 23, 2022 | Feb 23, 2022 |
| 6-K | Current report (foreign issuer) | Oct 27, 2021 | Oct 27, 2021 |
| 6-K | Current report (foreign issuer) | Oct 26, 2021 | Oct 26, 2021 |
| 6-K | Current report (foreign issuer) | Oct 13, 2021 | Oct 12, 2021 |
| 6-K | Current report (foreign issuer) | Jul 29, 2021 | Jun 30, 2021 |
| 6-K | Current report (foreign issuer) | Jul 28, 2021 | Jul 28, 2021 |
| 6-K | Current report (foreign issuer) | Jun 10, 2021 | Jun 9, 2021 |
| SD | Specialized disclosure (conflict minerals) | May 28, 2021 | — |
| 6-K | Current report (foreign issuer) | May 18, 2021 | May 18, 2021 |
| 6-K | Current report (foreign issuer) | May 17, 2021 | May 17, 2021 |
| 6-K | Current report (foreign issuer) | May 17, 2021 | May 17, 2021 |
| S-8 | Employee stock plan registration | May 14, 2021 | — |
| 6-K | Current report (foreign issuer) | May 6, 2021 | May 6, 2021 |
| 6-K | Current report (foreign issuer) | Apr 28, 2021 | Apr 28, 2021 |
| 6-K | Current report (foreign issuer) | Apr 21, 2021 | Apr 21, 2021 |
| 20-F | Annual report (foreign issuer) | Mar 17, 2021 | Dec 31, 2020 |
| 6-K | Current report (foreign issuer) | Mar 16, 2021 | Mar 16, 2021 |
| 6-K | Current report (foreign issuer) | Mar 16, 2021 | Mar 16, 2021 |
| 6-K | Current report (foreign issuer) | Feb 25, 2021 | Feb 25, 2021 |
| 6-K | Current report (foreign issuer) | Feb 24, 2021 | Feb 24, 2021 |
| 6-K | Current report (foreign issuer) | Feb 9, 2021 | Feb 9, 2021 |
| 6-K | Current report (foreign issuer) | Feb 9, 2021 | Feb 9, 2021 |
| 6-K | Current report (foreign issuer) | Feb 9, 2021 | Feb 9, 2021 |
| 6-K | Current report (foreign issuer) | Dec 22, 2020 | Dec 22, 2020 |
| F-3ASR | Filing | Nov 13, 2020 | — |
| 6-K | Current report (foreign issuer) | Oct 27, 2020 | Oct 27, 2020 |
| 6-K | Current report (foreign issuer) | Jul 23, 2020 | Jun 30, 2020 |
| 6-K | Current report (foreign issuer) | Jul 22, 2020 | Jul 22, 2020 |
| 6-K | Current report (foreign issuer) | Jul 8, 2020 | Jul 8, 2020 |
| 6-K | Current report (foreign issuer) | Jun 16, 2020 | Jun 16, 2020 |
| 6-K | Current report (foreign issuer) | Jun 16, 2020 | Jun 16, 2020 |
| 6-K | Current report (foreign issuer) | Jun 12, 2020 | Jun 12, 2020 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2020 | — |
| 6-K | Current report (foreign issuer) | May 26, 2020 | May 26, 2020 |
| 6-K | Current report (foreign issuer) | Apr 29, 2020 | Apr 29, 2020 |
| 6-K | Current report (foreign issuer) | Mar 20, 2020 | Mar 19, 2020 |
| 20-F | Annual report (foreign issuer) | Mar 9, 2020 | Dec 31, 2019 |
| 6-K | Current report (foreign issuer) | Feb 20, 2020 | Feb 20, 2020 |
| S-8 POS | Filing | Dec 12, 2019 | — |
| S-8 POS | Filing | Dec 12, 2019 | — |
| S-8 POS | Filing | Dec 12, 2019 | — |
| POSASR | Filing | Dec 12, 2019 | — |
| 6-K | Current report (foreign issuer) | Dec 12, 2019 | Dec 12, 2019 |
| 8-A12B/A | Filing | Dec 12, 2019 | — |
| 6-K | Current report (foreign issuer) | Dec 12, 2019 | Dec 12, 2019 |
| 6-K | Current report (foreign issuer) | Nov 26, 2019 | Nov 26, 2019 |
| 6-K | Current report (foreign issuer) | Oct 29, 2019 | Oct 29, 2019 |
| 6-K | Current report (foreign issuer) | Oct 24, 2019 | Oct 23, 2019 |
| EFFECT | Filing | Oct 23, 2019 | — |
| 424B3 | Prospectus | Oct 23, 2019 | — |
| CORRESP | Letter to the SEC | Oct 21, 2019 | — |
| F-4/A | Amendment no.1 to form f-4 | Oct 21, 2019 | — |
| 6-K | Current report (foreign issuer) | Jul 25, 2019 | Jul 25, 2019 |
| 6-K | Current report (foreign issuer) | Jul 25, 2019 | Jul 24, 2019 |
| 6-K | Current report (foreign issuer) | Jul 9, 2019 | Jul 9, 2019 |
| S-8 POS | Filing | Jun 28, 2019 | — |
| S-8 POS | Filing | Jun 28, 2019 | — |
| S-8 POS | Filing | Jun 28, 2019 | — |
| POSASR | Filing | Jun 28, 2019 | — |
| 8-A12B/A | Filing | Jun 28, 2019 | — |
| 6-K | Current report (foreign issuer) | Jun 28, 2019 | Jun 28, 2019 |
| 6-K | Current report (foreign issuer) | Jun 28, 2019 | Jun 28, 2019 |
| UPLOAD | Letter from the SEC | Jun 11, 2019 | — |
| F-4 | Form f-4 | Jun 3, 2019 | — |
| 6-K | Current report (foreign issuer) | May 31, 2019 | May 30, 2019 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2019 | — |
| 6-K | Current report (foreign issuer) | Apr 24, 2019 | Apr 24, 2019 |
| 6-K | Current report (foreign issuer) | Mar 14, 2019 | Mar 14, 2019 |
| 20-F | Annual report (foreign issuer) | Mar 11, 2019 | Dec 31, 2018 |
| 6-K | Current report (foreign issuer) | Feb 21, 2019 | Feb 21, 2019 |
| 6-K | Current report (foreign issuer) | Dec 14, 2018 | Dec 13, 2018 |
| 6-K | Current report (foreign issuer) | Dec 11, 2018 | Dec 11, 2018 |
| 6-K | Current report (foreign issuer) | Oct 25, 2018 | Oct 25, 2018 |
| UPLOAD | Letter from the SEC | Sep 21, 2018 | — |
| CORRESP | Letter to the SEC | Sep 14, 2018 | — |
| UPLOAD | Letter from the SEC | Aug 31, 2018 | — |
| 6-K/A | Filing | Aug 3, 2018 | Aug 3, 2018 |
| 6-K | Current report (foreign issuer) | Jul 25, 2018 | Jul 25, 2018 |
| 6-K | Current report (foreign issuer) | Jul 24, 2018 | Jul 24, 2018 |
| S-8 | Employee stock plan registration | Jun 27, 2018 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2018 | — |
| 6-K | Current report (foreign issuer) | May 25, 2018 | May 25, 2018 |
| 6-K | Current report (foreign issuer) | May 1, 2018 | Apr 30, 2018 |
| 6-K | Current report (foreign issuer) | Apr 26, 2018 | Apr 26, 2018 |
| 6-K | Current report (foreign issuer) | Mar 19, 2018 | Mar 16, 2018 |
| 20-F | Annual report (foreign issuer) | Mar 12, 2018 | Dec 31, 2017 |
| 6-K | Current report (foreign issuer) | Feb 23, 2018 | Feb 22, 2018 |
| 6-K | Current report (foreign issuer) | Feb 1, 2018 | Feb 1, 2018 |
| 6-K | Current report (foreign issuer) | Feb 1, 2018 | Jan 31, 2018 |
| 6-K | Current report (foreign issuer) | Nov 9, 2017 | Nov 9, 2017 |
| 6-K | Current report (foreign issuer) | Nov 3, 2017 | Nov 3, 2017 |
| 424B5 | Prospectus supplement | Nov 2, 2017 | — |
| FWP | Free writing prospectus | Oct 31, 2017 | — |
| 6-K | Current report (foreign issuer) | Oct 31, 2017 | Oct 30, 2017 |
| 424B5 | Prospectus supplement | Oct 30, 2017 | — |
| F-3ASR | Filing | Oct 30, 2017 | — |
| 6-K | Current report (foreign issuer) | Oct 30, 2017 | Oct 30, 2017 |
| 6-K | Current report (foreign issuer) | Oct 26, 2017 | Oct 26, 2017 |
| 6-K | Current report (foreign issuer) | Jul 28, 2017 | Jul 28, 2017 |
| 6-K | Current report (foreign issuer) | Jul 27, 2017 | Jul 27, 2017 |
| 6-K | Current report (foreign issuer) | Jun 21, 2017 | Jun 21, 2017 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2017 | — |
| 6-K | Current report (foreign issuer) | May 3, 2017 | May 3, 2017 |
| 6-K | Current report (foreign issuer) | Apr 28, 2017 | Apr 27, 2017 |
| 6-K | Current report (foreign issuer) | Mar 23, 2017 | Mar 23, 2017 |
| 6-K | Current report (foreign issuer) | Mar 23, 2017 | Mar 23, 2017 |
| 20-F | Annual report (foreign issuer) | Mar 21, 2017 | Dec 31, 2016 |
| 6-K | Current report (foreign issuer) | Mar 10, 2017 | Mar 10, 2017 |
| 6-K | Current report (foreign issuer) | Mar 9, 2017 | Mar 9, 2017 |
| 6-K | Current report (foreign issuer) | Feb 16, 2017 | Feb 16, 2017 |
| 6-K | Current report (foreign issuer) | Feb 2, 2017 | Feb 1, 2017 |
| 6-K | Current report (foreign issuer) | Feb 1, 2017 | Feb 1, 2017 |
| 6-K | Current report (foreign issuer) | Nov 10, 2016 | Nov 10, 2016 |
| 6-K | Current report (foreign issuer) | Nov 10, 2016 | Nov 10, 2016 |
| 6-K | Current report (foreign issuer) | Nov 7, 2016 | Nov 7, 2016 |
| 6-K | Current report (foreign issuer) | Oct 28, 2016 | Oct 28, 2016 |
| EFFECT | Filing | Sep 20, 2016 | — |
| 424B3 | Prospectus | Sep 20, 2016 | — |
| CORRESP | Letter to the SEC | Sep 16, 2016 | — |
| F-3/A | Amendment no. 1 to the form f-3 | Sep 13, 2016 | — |
| 6-K | Current report (foreign issuer) | Sep 1, 2016 | Sep 1, 2016 |
| 6-K | Current report (foreign issuer) | Aug 8, 2016 | Aug 5, 2016 |
| 6-K | Current report (foreign issuer) | Aug 3, 2016 | Aug 3, 2016 |
| 6-K | Current report (foreign issuer) | Aug 2, 2016 | Aug 2, 2016 |
Showing 200 filings, the most recent 200. 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.