Century Aluminum: the mines it operates or owns, and what they report

Century Aluminum is a listed company headquartered in United States (NASDAQ Global Select Market: CENX). This site lists 3 operations tied to it, for aluminum: it operates 3 and holds an interest in 0 more. On the operations here where a whole-operation figure can be stated (in metal content, or as the commodity page says for ore and smelted metal), its interests add up to about 638,000 tonnes of primary aluminum (0.9% of world output). That leaves out operations without such a figure, so it is not the company's total.

Its operations on this site

Operations of Century Aluminum
Operation	Commodity and country	Role	Interest	Whole-operation output	Share of world output
Grundartangi smelter aluminum smelter	aluminum Iceland	Operator	100% as of 31 December 2025	260,000 tonnes per year (tpy), 'Actual 2025 Annual Production' CY2025	0.4%
Sebree smelter aluminum smelter	aluminum United States	Operator	100% as of 31 December 2025	217,000 tonnes per year (tpy), 'Actual 2025 Annual Production' CY2025	0.3%
Mt. Holly smelter aluminum smelter	aluminum United States	Operator	100% as of 31 December 2025	161,000 tonnes per year (tpy), 'Actual 2025 Annual Production' CY2025	0.2%

How much is that on its interests?

aluminum: 638,000 tonnes of primary aluminum across 3 operations, about 0.9% of world output. Periods differ by operation (CY2025).

Computed as each operation's whole-operation output in metal content, or as ore or smelted metal where the commodity is measured that way, multiplied by the interest shown. Operations whose output is stated in another form, or only as the owner's share, are left out of this sum, so it understates what the company controls.

Sources

Century Aluminum Company: Form 10-K for the year ended 31 December 2025 (annual report (SEC 10-K, filed 2026-03-03), CY2025). Opened 4 November 2026.

The corporate facts above (headquarters, type, listing) come from the sources listed; no stock prices, valuations or executives are shown. Ownership and output are on the date and period stated on each operation's page. The list covers operations with a published figure for the commodities on this site, so it is not the company's full portfolio.

Made with AI assistance and checked against the sources by a second, independent pass; no professional review took place. How the site is made. To report an error, contact us.