Company Analysis

Constellium SE (CSTM)

NYSE: CSTM · Secondary Smelting & Refining of Nonferrous Metals · Paris, FR · filing with the SEC since 2012
Grade6.2
◀ Past 6.2● Present 7.1▶ Future 4.9
1 est.

Filings

238 filings since 2017 beside 105 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026
Due nextLarge accelerated filer
10-K Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends. by Mar 1, 2027
10-Q Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end. by May 10, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 28 days after the quarter ended. The proxy statement was last filed Apr 10, 2026.

Filings a yearinsider forms included
32172415242822125
20192020202120222023202420252026

2026 counts to Nov 13, 2026.

Officer or director change (8-K item 5.02): 1 time in the last 36 months, the newest Oct 29, 2025.SEC letters: 6 in the last 36 months, the newest Mar 5, 2024.
Insider forms 105

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Oct 28, 2026 10-Q Quarterly report Sep 30, 2026
Oct 28, 2026 8-K items 2.02, 9.01 Results released · Current report
Aug 6, 2026 SCHEDULE 13G/A Large holder update, amended
Jul 29, 2026 10-Q Quarterly report Jun 30, 2026
Jul 29, 2026 8-K items 2.02, 9.01 Results released · Current report
Jun 24, 2026 S-3ASR Shelf registration
May 28, 2026 SD Conflict minerals report
May 28, 2026 SCHEDULE 13D/A Activist holder update, amended
May 21, 2026 8-K items 5.07, 9.01 Shareholder vote · Current report
May 6, 2026 SCHEDULE 13G/A Large holder update, amended
Apr 29, 2026 10-Q Quarterly report Mar 31, 2026
Apr 29, 2026 8-K items 2.02, 9.01 Results released · Current report
Apr 24, 2026 SCHEDULE 13G/A Large holder update, amended
Apr 10, 2026 ARS Annual report to shareholders Dec 31, 2025
Apr 10, 2026 DEFA14A Extra proxy material
Apr 10, 2026 DEF 14A Proxy statement Dec 31, 2025
Mar 30, 2026 PRE 14A Preliminary proxy statement Dec 31, 2025
Mar 12, 2026 8-K items 8.01, 9.01 Other event · Current report
Feb 25, 2026 10-K Annual report Dec 31, 2025
Feb 18, 2026 8-K item 2.02 Results released · Current report
Feb 5, 2026 SCHEDULE 13G/A Large holder update, amended
Oct 29, 2025 10-Q Quarterly report Sep 30, 2025
Oct 29, 2025 8-K items 2.02, 9.01 Results released · Current report
Oct 29, 2025 8-K items 5.02, 7.01, 9.01 Officer or director change; Investor disclosure (Regulation FD) · Current report
Sep 16, 2025 SCHEDULE 13G Large holder notice
Sep 8, 2025 SCHEDULE 13G/A Large holder update, amended
Aug 14, 2025 SCHEDULE 13G/A Large holder update, amended
Aug 1, 2025 SCHEDULE 13G/A Large holder update, amended
Jul 31, 2025 10-Q Quarterly report Jun 30, 2025
Jul 29, 2025 8-K items 2.02, 9.01 Results released · Current report
Jul 17, 2025 SCHEDULE 13G Large holder notice
May 30, 2025 SCHEDULE 13G Large holder notice
May 27, 2025 SD Conflict minerals report
May 22, 2025 8-K item 5.07 Shareholder vote · Current report May 15, 2025
Apr 30, 2025 10-Q Quarterly report Mar 31, 2025
Apr 30, 2025 8-K items 2.02, 9.01 Results released · Current report
Apr 29, 2025 SCHEDULE 13G/A Large holder update, amended
Apr 15, 2025 8-K items 8.01, 9.01 Other event · Current report
Apr 15, 2025 10-K/A Annual report, amended Dec 31, 2024
Feb 28, 2025 10-K Annual report Dec 31, 2024
40 of 238 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton CSTM · research, not advice