# Century Aluminum Co: overview

CENX · Nasdaq · CIK 949157 · [Materials](/sectors/materials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/cenx.md) · [Financials](/companies/cenx/financials.md) · [Filings](/companies/cenx/filings.md) · [Insiders](/companies/cenx/insiders.md)

Latest reported revenue: [$752.1m](/filings/0001628280-26-054308.md) for Q2 FY2026, three months to 2026-06-30, from the 10-Q filed Aug 6, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001628280-26-054308).

## Last eight quarters

| Line item | Unit | period not labelled (2024-09-30) | Q4 FY2024 (2024-12-31) | Q1 FY2025 (2025-03-31) | Q2 FY2025 (2025-06-30) | Q3 FY2025 (2025-09-30) | Q4 FY2025 (2025-12-31) | Q1 FY2026 (2026-03-31) | Q2 FY2026 (2026-06-30) |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [539](/filings/0001628280-25-050200.md) | [631 d](/filings/0001628280-26-013788.md) | [634](/filings/0001628280-26-032094.md) | [628](/filings/0001628280-26-054308.md) | [632](/filings/0001628280-25-050200.md) | [634 d](/filings/0001628280-26-013788.md) | [649](/filings/0001628280-26-032094.md) | [752](/filings/0001628280-26-054308.md) |
| Gross margin | % | [14.3%](/filings/0001628280-26-013788.md) | [8.4% d](/filings/0001628280-26-013788.md) | [9.0%](/filings/0001628280-26-032094.md) | [5.3%](/filings/0001628280-26-054308.md) | [11.8%](/filings/0001628280-26-013788.md) | [13.0% d](/filings/0001628280-26-013788.md) | [18.3%](/filings/0001628280-26-032094.md) | [30.3%](/filings/0001628280-26-054308.md) |
| Operating margin | % | [10.9%](/filings/0001628280-26-013788.md) | [5.8% d](/filings/0001628280-26-013788.md) | [6.8%](/filings/0001628280-26-032094.md) | [2.9%](/filings/0001628280-26-054308.md) | [8.8%](/filings/0001628280-26-013788.md) | [5.2% d](/filings/0001628280-26-013788.md) | [57.6%](/filings/0001628280-26-032094.md) | [28.1%](/filings/0001628280-26-054308.md) |
| Net margin | % | [8.8%](/filings/0001628280-26-013788.md) | [7.2% d](/filings/0001628280-26-013788.md) | [4.7%](/filings/0001628280-26-032094.md) | [(0.7%)](/filings/0001628280-26-054308.md) | [2.4%](/filings/0001628280-26-013788.md) | [0.3% d](/filings/0001628280-26-013788.md) | [52.0%](/filings/0001628280-26-032094.md) | [33.1%](/filings/0001628280-26-054308.md) |
| Diluted EPS | $ per share | [0.46](/filings/0001628280-25-050200.md) | not reported | [0.29](/filings/0001628280-26-032094.md) | [(0.05)](/filings/0001628280-26-054308.md) | [0.15](/filings/0001628280-25-050200.md) | not reported | [3.23](/filings/0001628280-26-032094.md) | [2.39](/filings/0001628280-26-054308.md) |
| Free cash flow | $m | [(2.4) d](/filings/0001628280-25-050200.md) | [(54.6) d](/filings/0001628280-26-013788.md) | [51.1](/filings/0001628280-26-032094.md) | [(15.9) d](/filings/0001628280-26-054308.md) | [(18.1) d](/filings/0001628280-25-050200.md) | [67.7 d](/filings/0001628280-26-013788.md) | [(6.4)](/filings/0001628280-26-032094.md) | [108 d](/filings/0001628280-26-054308.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. Derived values: 9-month figure less the 6-month figure; 12-month figure less the 9-month figure; 6-month figure less the 3-month figure.

## Last five fiscal years

| Line item | Unit | FY2021 (2021-12-31) | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | FY2025 (2025-12-31) |
| --- | --- | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [2,213](/filings/0000949157-24-000028.md) | [2,777](/filings/0000949157-25-000024.md) | [2,185](/filings/0001628280-26-013788.md) | [2,220](/filings/0001628280-26-013788.md) | [2,528](/filings/0001628280-26-013788.md) |
| Gross margin | % | [5.6%](/filings/0000949157-24-000028.md) | [1.7%](/filings/0000949157-25-000024.md) | [4.0%](/filings/0001628280-26-013788.md) | [7.7%](/filings/0001628280-26-013788.md) | [10.1%](/filings/0001628280-26-013788.md) |
| Operating margin | % | [3.0%](/filings/0000949157-24-000028.md) | [(5.4%)](/filings/0000949157-25-000024.md) | [1.3%](/filings/0001628280-26-013788.md) | [4.9%](/filings/0001628280-26-013788.md) | [6.3%](/filings/0001628280-26-013788.md) |
| Net margin | % | [(7.6%)](/filings/0000949157-24-000028.md) | [(0.5%)](/filings/0000949157-25-000024.md) | [(2.0%)](/filings/0001628280-26-013788.md) | [15.2%](/filings/0001628280-26-013788.md) | [1.7%](/filings/0001628280-26-013788.md) |
| Diluted EPS | $ per share | [(1.85)](/filings/0000949157-24-000028.md) | [(0.15)](/filings/0000949157-25-000024.md) | [(0.47)](/filings/0001628280-26-013788.md) | [3.27](/filings/0001628280-26-013788.md) | [0.42](/filings/0001628280-26-013788.md) |
| Free cash flow | $m | [(148)](/filings/0000949157-24-000028.md) | [(60.4)](/filings/0000949157-25-000024.md) | [10.6](/filings/0001628280-26-013788.md) | [(107)](/filings/0001628280-26-013788.md) | [84.8](/filings/0001628280-26-013788.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquirePropertyPlantAndEquipment.

Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing.

## Insider purchases and sales

The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/cenx/insiders.md)

None in coverage.

## Funds that report holding it

From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md)

| Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | --- | --- |
| [Glencore plc](/funds/1521365.md) | 2026-06-30 | $1.37bn | 29,690,702 |  | Unchanged |
| [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $474.1m | 10,304,905 |  | Added +1,294,526 |
| [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $255.0m | 5,542,720 |  | Added +875,180 |
| [VANGUARD PORTFOLIO MANAGEMENT LLC](/funds/2100121.md) | 2026-06-30 | $219.6m | 4,773,720 |  | Added +532,163 |
| [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $136.8m | 2,972,532 |  | Added +386,425 |
| [Invesco Ltd.](/funds/914208.md) | 2026-06-30 | $111.2m | 2,417,794 |  | Added +341,266 |
| [Sourcerock Group LLC](/funds/1822531.md) | 2026-06-30 | $104.3m | 2,266,085 |  | Reduced −421,164 |
| [DIMENSIONAL FUND ADVISORS LP](/funds/354204.md) | 2026-06-30 | $101.8m | 2,211,502 |  | Added +20,580 |
| [FMR LLC](/funds/315066.md) | 2026-06-30 | $90.2m | 1,960,353 |  | Reduced −699,701 |
| [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $85.0m | 1,846,800 |  | Added +306,588 |

## Recent filings

[All 1,115 filings](/companies/cenx/filings.md)

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-08-06 | 20:11 ET | [10-Q](/filings/0001628280-26-054308.md) | Quarterly report, period 2026-06-30 | 0001628280-26-054308 |
| 2026-08-06 | 20:09 ET | [8-K](/filings/0001628280-26-054300.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-054300 |
| 2026-06-17 | 20:35 ET | [8-K](/filings/0001628280-26-043936.md) | 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001628280-26-043936 |
| 2026-05-07 | 20:10 ET | [10-Q](/filings/0001628280-26-032094.md) | Quarterly report, period 2026-03-31 | 0001628280-26-032094 |
| 2026-05-07 | 20:06 ET | [8-K](/filings/0001628280-26-032082.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-032082 |
| 2026-04-24 | 13:00 ET | [DEF 14A](/filings/0001552781-26-000269.md) | Proxy statement, period 2026-06-15 | 0001552781-26-000269 |
| 2026-03-04 | 21:49 ET | [SCHEDULE 13D/A](/filings/0001104659-26-023524.md) | Ownership report, active investor, amended | 0001104659-26-023524 |
| 2026-03-03 | 21:07 ET | [10-K](/filings/0001628280-26-013788.md) | Annual report, period 2025-12-31 | 0001628280-26-013788 |
| 2026-03-03 | 21:05 ET | [8-K](/filings/0001628280-26-013781.md) | 4.02 Non-reliance on financial statements | 0001628280-26-013781 |
| 2026-02-19 | 21:46 ET | [8-K](/filings/0001628280-26-009831.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001628280-26-009831 |

## Latest annual report

[Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001628280-26-013788.md), filed Mar 3, 2026.

## Forecast league

Q3 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/1bb877f6-9cc2-47a7-a3b5-0d8601d2d2df)

## About the filer

- CIK: 949157
- Tickers: CENX
- Exchange: Nasdaq
- SIC code: 3334 Primary Production of  Aluminum
- State of incorporation: DE
- Filer category: Large accelerated filer

Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:29 ET. No prices; not investment advice.