Century Aluminum Company (CENX)

Aluminum smelters and an alumina refinery. Read November 9, 2026 from the annual report for the period ending December 31, 2025, filed March 3, 2026. Ranked 62 of the 84 Basic Materials companies read so far, by the share within reach now.

The filing states 2,906 employees at December 31, 2025 by country, 46% in the United States, and describes aluminum smelters, an alumina refinery and an anode plant, all read at alumina and aluminum production by description.

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: 22% now, 26% 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, 9% people work and 64% 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 71% of the working time stays with people (conversation, in-person and hands-on work), 25% 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

2,906 employees as of December 31, 2025 (stated). 1,324 of 2,906 employees are domiciled in the United States, 857 in Jamaica, 636 in Iceland and 89 in the Netherlands (stated).

The filing: “As of December 31, 2025, we had 2,906 employees.”

The workforce as industry patterns

What the filing says about the workforce: 2,906 employees at December 31, 2025: 1,324 in the United States, 857 in Jamaica, 636 in Iceland and 89 in the Netherlands; bargaining unit employees at Grundartangi, Vlissingen, Sebree and Jamalco represent 55% of the workforce, Mt. Holly is not unionized; the Hawesville facility was sold on February 2, 2026.

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. Now is projected from METR's April 2026 measurement and Epoch's November 2026 index.

• Alcoa Corporation (AA, 14,900 employees)22% now, 26% by 2028
• Constellium SE (CSTM, 11,500 employees)23% now, 27% by 2028
• Kaiser Aluminum Corporation (KALU, 3,840 employees)23% now, 28% by 2028

What the filing says about AI

3 sentences in the filing name AI. The filing names artificial intelligence only in describing the sale of its Hawesville, Kentucky facility to an affiliate of Terawulf that intends to develop a high-performance computing and AI data center on the site, with Century holding a minority equity interest.

• “Sale of Hawesville On February 2, 2026, we completed the sale of our Hawesville, Kentucky facility to an affiliate of Terawulf, Inc. for $200.0 million in cash and a 6.8% non-dilutive minority equity interest in the Terawulf affiliate that intends to develop and own a high-performance computing/artificial intelligence data center on the site (the "Data Center Minority Interest").”
• “Sale of Hawesville On February 2, 2026, we completed the sale of our Hawesville, Kentucky facility to an affiliate of Terawulf, Inc. for $200.0 million in cash and a 6.8% non-dilutive minority equity interest in the Terawulf affiliate that intends to develop and own a high-performance computing/artificial intelligence data center on the site (the "Data Center Minority Interest").”
• “Sale of Hawesville On February 2, 2026, we completed the sale of our Hawesville, Kentucky facility to an affiliate of Terawulf, Inc. for $ 200.0 million in cash and a 6.8 % non-dilutive minority equity interest in the Terawulf affiliate that intends to develop and own a high-performance computing/artificial intelligence data center on the site.”

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

• Fiscal 20210median 0
• Fiscal 20220median 0
• Fiscal 20230median 1
• Fiscal 20240median 4
• Fiscal 20253median 10

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.

Limits of this reading

• No count by function; the smelters, the alumina refinery and the anode plant are one pattern by description (c).
• The Hawesville smelter, sold in February 2026, is counted as the filing counts it at December 31, 2025.

Source: the company's annual report on EDGAR, accession 0001628280-26-013788, 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.