Constellium SE (CSTM)
Aluminum rolling mills and automotive structures. Read October 19, 2026 from the annual report for the period ending December 31, 2025, filed February 25, 2026. Ranked 33 of the 43 Basic Materials companies read so far, by the share within reach now.
Within reach now
16%
End of 2028
27%
Employees, annual report
11,500
Leading staffing pattern
Alumina and Aluminum Production and Processing
Share of the working time within reach, long-run pace, four times in five
- Now16%
- End of 202723%
- End of 202827%
- End of 203027%
What changes for its people by the end of 2028, by its industries' figures
- Stays with people 70%
- Becomes checking a model's work 24%
- Handed over with lighter checks 4%
Constellium states approximately 11,500 employees at December 31, 2025, 26% in the U.S., counting 3,300 in A&T, 4,100 in P&ARP and 3,600 in AS&I, so the rolling mills take two thirds and the automotive structures plants a third (a).
The figures on this page come from the company's own annual report and from BLS staffing patterns for its industries, never from a roster. They are estimates with a stated method. Nothing here says what the company will do: within reach is not a forecast of jobs lost or of savings.
What follows from the reading
Share of working time within reach of AI, on the long-run pace at four in five: 16% now, 23% at the end of 2027, 27% at the end of 2028, 27% at the end of 2030. By the patterns, the work is about 27% desk work, 11% people work and 62% body work. These are the site's industry estimates weighted by the shares below: estimates with a stated method and range, not a forecast of what the company will do. By the same patterns, at the end of 2028 about 70% of the working time stays with people (conversation, in-person and hands-on work), 24% becomes checking a model's work and 4% could be handed over with lighter checks, from the industries' own figures, not the company's roles.
Headcount
11,500 employees as of December 31, 2025 (stated). The filing states approximately 26% of employees in the United States, 35% in France, 20% in Germany, 5% in Switzerland and 14% in Eastern Europe and other regions.
The filing: “Human Capital As of December 31, 2025, we employed approximately 11,500 employees.”
The workforce as industry patterns
| Pattern | Share | Reason, from the filing |
|---|---|---|
| Alumina and Aluminum Production and Processing | 69% | The filing counts approximately 3,300 employees in the A&T segment's five rolling facilities and 4,100 in the P&ARP segment's four, aluminum plate, sheet and rolled products (a), with the 500 not counted in a segment read here. |
| Motor Vehicle Parts Manufacturing | 31% | The filing counts approximately 3,600 employees in the AS&I segment's fifteen facilities making crash management systems, body structures and battery enclosure components for automakers (a). |
What the filing says about the workforce: Approximately 90% in production and maintenance and 10% in support functions; about 500 temporary workers contracted apart; approximately 50% of U.S. employees and a majority of non-U.S. employees under collective bargaining agreements; by country 26% U.S., 35% France, 20% Germany, 5% Switzerland, 14% elsewhere.
Companies read with the same leading pattern
Other companies whose largest staffing pattern is also Alumina and Aluminum Production and Processing, largest first, each read from its own annual report. Within reach now and at the end of 2028, long-run pace, four in five.
- Alcoa Corporation (AA, 14,900 employees)16% now, 25% by 2028
What the filing says about AI
3 sentences in the filing name AI. The filing names AI and machine learning among the new technologies raising information security risks, and the unauthorized use or misuse of AI by employees or vendors as a risk of disclosure and liability.
- “Information security risks continue to grow with the ongoing proliferation of new technologies, such as artificial intelligence ("AI") and machine learning, and the sophistication and high level of activity of perpetrators of cyber-attacks, particularly during periods of domestic and international conflict, and geopolitical tension.”
- “The use of new and evolving technologies, such as AI, presents risks and challenges that can impact our business.”
- “Unauthorized use or misuse of AI by the Company's employees, vendors or others may result in the disclosure of confidential company or customer data, reputational harm, privacy law violations, cybersecurity risks, and legal liability.”
Its annual reports, year by year
Sentences naming AI in each annual report, counted by one rule, beside the median report in the Index that year. Each count links its filing. Every company, by year and sector
Headcount by filing year
As reported in each year's annual report, with the filing. A year marked not read had no figure the reading could take from the report's text.
| Period | Employees | Filed | Filing |
|---|---|---|---|
| 2025-12-31 | 11,500 | 2026-02-25 | 10-K |
| 2024-12-31 | 12,000 | 2025-02-28 | 10-K |
| 2023-12-31 | 12,000 | 2024-03-18 | 20-F |
| 2022-12-31 | 12,500 | 2023-03-14 | 20-F |
| 2021-12-31 | 12,000 | 2022-03-14 | 20-F |
| 2020-12-31 | 12,000 | 2021-03-17 | 20-F |
| 2019-12-31 | 13,200 | 2020-03-09 | 20-F |
| 2018-12-31 | 13,000 | 2019-03-11 | 20-F |
| 2017-12-31 | 12,000 | 2018-03-12 | 20-F |
| 2016-12-31 | 11,000 | 2017-03-21 | 20-F |
| 2015-12-31 | 11,000 | 2016-04-18 | 20-F |
| 2014-12-31 | 8,900 | 2015-04-24 | 20-F |
| 2013-12-31 | 8,600 | 2014-04-22 | 20-F |
Limits of this reading
- About 500 temporary workers are contracted apart and left out (rule 8).
- The segment counts sum to 11,000 against the stated 11,500; the remaining 500 are read inside the rolling pattern.
Source: the company's annual report on EDGAR, accession 0001563411-26-000057, the filing. Read by Claude Fable 5.1 under rubric version 1, by the method. A company can write to info@stratussc.com to have its reading checked against its filing.
The report on Constellium SE, $29
This page as a document to keep, with what it does not show: the share within reach at every date on three paces and two reliabilities, a typical workforce of this shape at the stated headcount role by role and task by task (the industries' staffing, never the company's roster), where to start, what changes for the people and what they would learn, every sentence in the filing that names AI, the headcount by year, the companies read with the same leading pattern, the method and a citation line. To print or save as a PDF, open again in your browser for a year.
See the report, $29See the sample first: Walmart's report is free
Questions about this company
- How much of Constellium SE's working time is within reach of AI?
- An estimated 16% now and 27% by the end of 2028, on METR's long-run pace at four in five, from the workforce Constellium SE's own annual report describes and BLS staffing patterns for its industries, never from a roster. It is an estimate with a stated method. It is not a forecast of jobs lost or of savings, and it says nothing about what the company will do.
- How many people does Constellium SE employ?
- 11,500 as of December 31, 2025, as its annual report for the period ending December 31, 2025 states. About 26% in the U.S.
- What kinds of work make up Constellium SE's workforce?
- Read from its annual report as a blend of 2 industry staffing patterns, the largest Alumina and Aluminum Production and Processing; by those patterns the work is about 27% desk work, 11% people work and 62% body work. Each share has a one-sentence reason on this page that can be checked against the filing.
- What does Constellium SE's annual report say about AI?
- 3 sentences in the filing name AI. Its annual reports for fiscal 2024 to 2025 name it in 0 and 3 sentences, year by year. They are counted and quoted on this page, never judged: a count says how much a filing talks about AI, not what the company does with it.
- How is this estimated?
- Claude Fable 5.1 read the annual report under the Index's written rubric (version 1) on October 19, 2026: the stated headcount, the share in the U.S. when stated, and the workforce as a blend of industry staffing patterns. The estimates are the site's industry estimates weighted by those shares, from O*NET tasks with estimated lengths and METR's measurements of how long a task AI models can finish. A company can write to info@stratussc.com to have its reading checked against its filing.
Embed these figures on your site
A small card with the share of working time within reach now and at the end of 2027, 2028 and 2030, the date and a link back. Free under CC BY 4.0; the card carries the credit.