Century Aluminum (CENX) Earnings: Q3 2026 Results

The quarter ended September 30, 2026 and Century Aluminum published the results on November 5, 2026. Revenue and diluted EPS are shown against Q3 2025, the same quarter a year earlier, which takes seasonal swings out of the comparison. Century Aluminum reports EPS two ways: GAAP, under the accounting rules every US filer follows, and Adjusted EPS, which leaves out items the company considers outside its operating results. The release reconciles the two, and when they diverge, the reconciliation says why.

• Century Aluminum's release compares Q3 2026 with Q2 2026, not with the year-ago quarter. The year-ago figures here are from the Form 10-Q and the Q3 2025 release.
• Century restated its Q3 2025 financial statements to fully consolidate its Jamalco joint venture. The restatement did not change Q3 2025 net sales or net income attributable to Century stockholders.
• Century reports a single segment. Related-party sales are sales to Glencore, which beneficially owns approximately 36.4% of Century's common stock.

Source: Century Aluminum Q3 2026 results, November 5, 2026. Also in the Form 10-Q for the quarter ended September 30, 2026. Figures as reported; checked against the release on November 10, 2026.

How Century Aluminum splits revenue in its own release, under its own labels, for Q3 2026 against Q3 2025. Indented lines are parts of the line above them.

• Century Aluminum's Related parties (Glencore) revenue was $492 million in Q3 2026, up 54% from $320 million in Q3 2025, 51% of total revenue.
• Century Aluminum's Other customers revenue was $470 million in Q3 2026, up 50% from $313 million in Q3 2025, 49% of total revenue.

Segment lines are the figures writers cite most often, because they show where the growth in a quarter came from. Companies redraw their segments from time to time and restate the prior year to match, so a year-ago figure here can differ from the one printed a year ago. When that has happened, the note above says so.

From the earnings release

Century Aluminum's outlook covers Adjusted EBITDA only. It does not give a revenue or EPS outlook in the release.

In its Q3 2026 release, Century Aluminum said:

“The Company expects fourth quarter Adjusted EBITDA to range between $275 to $300 million.”

Source: Century Aluminum Q3 2026 release, Nov 5, 2026.

This is the company's own guidance as of Nov 5, 2026, quoted as given. Walnut does not make forecasts of its own. Analyst estimates for the coming quarters are on the CENX forecast page.

Revenue and diluted EPS for the last 5 quarters. Each date links to that quarter's release.

Net sales in USD millions and GAAP diluted EPS attributable to Century, each as first reported in that quarter's release. Q1 2026 EPS includes the gain on the sale of the Hawesville site.

We do not hold a confirmed date for Century Aluminum's next report. Companies post the date on their investor relations site a few weeks ahead, usually with the time of the conference call.

Each quarter keeps its own page with the figures as reported, so a link to one stays pointed at the same numbers after the next report.

• Q3 2026 (this page), reported Nov 5, 2026

Century Aluminum makes primary aluminum at smelters in the United States and Iceland and owns 55% of the Jamalco bauxite mine and alumina refinery in Jamaica. Its annual production capacity was approximately 770,000 tonnes as of December 31, 2025, including Sebree in Kentucky (approximately 220,000 tonnes) and Mt. Holly in South Carolina (approximately 230,000 tonnes). (Century Aluminum Form 10-K, 2025, Mar 3, 2026; Century Aluminum Q3 2026 release, Nov 5, 2026)

Net sales were $961.2 million in Q3 2026, against $632.2 million in Q3 2025 and $752.1 million in Q2 2026. Aluminum shipments rose to 173,483 tonnes from 130,632 tonnes in Q2. Century said the $209.1 million sequential increase came mainly from Line 2 at Grundartangi, Iceland returning to near full production after an equipment failure, which added $161.5 million through volume and mix, plus $41.7 million from higher LME and realized regional price premiums and $6.4 million from alumina sales. (Century Aluminum Q3 2026 release, Nov 5, 2026; Century Aluminum Form 10-Q, Q3 2026, Nov 5, 2026)

Century's selling price is the LME base price plus a regional premium (the Midwest premium in the U.S., the European Duty Paid premium in Europe) and any value-added product premium. Century said the increase in the U.S. Section 232 tariff on primary aluminum from 25% to 50%, effective June 4, 2025, lifted the LME and Midwest premium, with a material positive impact on its results. (Century Aluminum Form 10-Q, Q3 2026, Nov 5, 2026)

Glencore is Century's largest customer and shareholder. Net sales to Glencore were $491.6 million in Q3 2026, against $319.6 million a year earlier, and Century derived approximately 54.0% of its 2025 consolidated sales from Glencore, which beneficially owns approximately 36.4% of its common stock. (Century Aluminum Form 10-Q, Q3 2026, Nov 5, 2026; Century Aluminum Form 10-K, 2025, Mar 3, 2026)

Century Aluminum's GAAP diluted EPS was $2.89 in Q3 2026, against $0.15 a year earlier, on net income attributable to Century of $302.6 million. Adjusted EPS was $2.58. Adjusted net income of $271.6 million leaves out $34.5 million of unrealized gains on derivative contracts and a $12.7 million gain on insurance proceeds, both net of tax, and adds back $15.1 million of costs from the Iceland equipment failure. (Century Aluminum Q3 2026 release, Nov 5, 2026; Century Aluminum Form 10-Q, Q3 2026, Nov 5, 2026)

Insurance and tax credits move Century's results. Gain on insurance proceeds related to the Iceland equipment failure was $15.9 million before tax in Q3 2026, down from $40.1 million in Q2. Cost of goods sold was reduced by a $26.3 million IRA Section 45X tax credit in the quarter. Income tax expense was $11.6 million on income before taxes of $313.9 million. (Century Aluminum Q3 2026 release, Nov 5, 2026; Century Aluminum Form 10-Q, Q3 2026, Nov 5, 2026)

Diluted weighted-average shares were 105.2 million, against 99.2 million in Q3 2025, while basic shares were 99.0 million. (Century Aluminum Form 10-Q, Q3 2026, Nov 5, 2026)

Diluted EPS divides net income by the weighted average number of shares outstanding in the quarter, plus the shares that options and other equity awards could add. Buybacks shrink that count and lift EPS for the same profit; share issuance and stock awards enlarge it.

Century Aluminum gives a one-line outlook in its release, covering Adjusted EBITDA only. For Q4 2026 it expects Adjusted EBITDA attributable to Century of $275 million to $300 million, against $331.6 million in Q3 2026, and it does not give a revenue or EPS outlook. (Century Aluminum Q3 2026 release, Nov 5, 2026)

Century said Q3 2026 results were held back by unfavorable power price realization from extreme hot weather. The 10-Q puts that at $7.3 million in the gross profit bridge from Q2. (Century Aluminum Q3 2026 release, Nov 5, 2026; Century Aluminum Form 10-Q, Q3 2026, Nov 5, 2026)

A consensus figure is the average of the models published by the analysts who cover Century Aluminum, collected by a data provider and revised up to the day of the report. A quarter that lands above it says how expectations were set as much as how the business did, and the share price on the day also reflects the guidance and the lines no consensus covers.

The consensus figures on this page are Yahoo Finance's, as pulled on the date shown. Each comes with the number of analysts behind it; the smaller that number, the more one revised estimate can move the average.

The figures below are the ones Century Aluminum's own release and filings put weight on for Q3 2026, with the latest reported value for each.

What the quarter means for a holding is a separate question from what it reported. The case for and against owning CENX is on is CENX a buy or a sell?, what analysts expect next is on the CENX forecast, and what the company does is on the Century Aluminum (CENX) stock page.

Every number on this page can be traced to a document Century Aluminum published. Checking one takes a couple of minutes, and it is worth doing before you quote a figure anywhere.

• The results release is the document linked in the source line above. Companies publish it on their investor relations site at the moment results go out, and it carries the headline tables: revenue, operating income, net income and EPS for the quarter and the year-ago quarter.
• The same release is filed with the SEC as Exhibit 99.1 to a Form 8-K under Item 2.02, usually on the day of the report. The SEC copy does not change after the fact, which makes it the safer thing to link when you cite a number.
• The quarterly report (Form 10-Q) follows within a few weeks and carries the full financial statements, the segment note and management's discussion of what changed. The fourth quarter is covered by the annual report (Form 10-K) instead.
• Restated comparisons are flagged in the notes on this page. When a company redraws its segments or changes how it adjusts EPS, it restates the year-ago column, so the year-ago figure in a new release can differ from the one printed a year ago. This page always uses the comparison in the newer release, because that is the like-for-like one.

A walk-through of every line in a release, with what each one tells you, is in how to read an earnings report.