# Kaiser Aluminum Corp: overview

KALU · Nasdaq · CIK 811596 · [Materials](/sectors/materials.md) · fiscal year ends Dec 31

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

Latest reported revenue: [$1.21bn](/filings/0001193125-26-429090.md) for Q3 FY2026, three months to 2026-09-30, from the 10-Q filed Oct 22, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001193125-26-429090).

## Last eight quarters

| Line item | Unit | 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) | Q3 FY2026 (2026-09-30) |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [765 d](/filings/0001193125-26-059575.md) | [777](/filings/0001193125-26-173882.md) | [823](/filings/0001193125-26-314580.md) | [844](/filings/0001193125-26-429090.md) | [929 d](/filings/0001193125-26-059575.md) | [1,107](/filings/0001193125-26-173882.md) | [1,257](/filings/0001193125-26-314580.md) | [1,215](/filings/0001193125-26-429090.md) |
| Gross margin | % | not reported | not reported | not reported | not reported | not reported | not reported | not reported | not reported |
| Operating margin | % | [5.0% d](/filings/0001193125-26-059575.md) | [5.3%](/filings/0001193125-26-173882.md) | [4.6%](/filings/0001193125-26-314580.md) | [5.8%](/filings/0001193125-26-429090.md) | [6.5% d](/filings/0001193125-26-059575.md) | [8.8%](/filings/0001193125-26-173882.md) | [10.6%](/filings/0001193125-26-314580.md) | [4.5%](/filings/0001193125-26-429090.md) |
| Net margin | % | [2.6% d](/filings/0001193125-26-059575.md) | [2.8%](/filings/0001193125-26-429090.md) | [2.8%](/filings/0001193125-26-429090.md) | [4.7%](/filings/0001193125-26-429090.md) | [3.0% d](/filings/0001193125-26-059575.md) | [5.6%](/filings/0001193125-26-429090.md) | [7.7%](/filings/0001193125-26-429090.md) | [2.6%](/filings/0001193125-26-429090.md) |
| Diluted EPS | $ per share | not reported | [1.31](/filings/0001193125-26-173882.md) | [1.41](/filings/0001193125-26-314580.md) | [2.38](/filings/0001193125-26-429090.md) | not reported | [3.71](/filings/0001193125-26-173882.md) | [5.72](/filings/0001193125-26-314580.md) | [1.84](/filings/0001193125-26-429090.md) |
| Free cash flow | $m | [(12.6) d](/filings/0001193125-26-059575.md) | [18.8](/filings/0001193125-26-173882.md) | [(27.7) d](/filings/0001193125-26-314580.md) | [34.5 d](/filings/0001193125-26-429090.md) | [(51.1) d](/filings/0001193125-26-059575.md) | [68.5](/filings/0001193125-26-173882.md) | [35.1 d](/filings/0001193125-26-314580.md) | [72.3 d](/filings/0001193125-26-429090.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Gross margin (gross profit / revenue). XBRL 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:PaymentsToAcquireProductiveAssets. Derived values: 12-month figure less the 9-month figure; 6-month figure less the 3-month figure; 9-month figure less the 6-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 | [2,622](/filings/0000950170-24-018958.md) | [3,428](/filings/0000950170-25-024313.md) | [3,087](/filings/0001193125-26-059575.md) | [3,024](/filings/0001193125-26-059575.md) | [3,373](/filings/0001193125-26-059575.md) |
| Gross margin | % | not reported | not reported | not reported | not reported | not reported |
| Operating margin | % | [2.5%](/filings/0000950170-24-018958.md) | [0.1%](/filings/0000950170-25-024313.md) | [4.0%](/filings/0001193125-26-059575.md) | [3.7%](/filings/0001193125-26-059575.md) | [5.6%](/filings/0001193125-26-059575.md) |
| Net margin | % | [(0.7%)](/filings/0000950170-24-018958.md) | [(0.9%)](/filings/0000950170-25-024313.md) | [2.2%](/filings/0001193125-26-059575.md) | [2.2%](/filings/0001193125-26-059575.md) | [3.3%](/filings/0001193125-26-059575.md) |
| Diluted EPS | $ per share | [(1.17)](/filings/0000950170-24-018958.md) | [(1.86)](/filings/0000950170-25-024313.md) | [4.21](/filings/0001193125-26-059575.md) | [4.02](/filings/0001193125-26-059575.md) | [6.77](/filings/0001193125-26-059575.md) |
| Free cash flow | $m | [21.4](/filings/0000950170-24-018958.md) | [(206)](/filings/0000950170-25-024313.md) | [68.7](/filings/0001193125-26-059575.md) | [(13.7)](/filings/0001193125-26-059575.md) | [(25.5)](/filings/0001193125-26-059575.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Gross margin (gross profit / revenue). XBRL 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:PaymentsToAcquireProductiveAssets.

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/kalu/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 |
| --- | --- | ---: | ---: | --- | --- |
| [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $561.6m | 2,870,588 |  | Added +27,694 |
| [VANGUARD PORTFOLIO MANAGEMENT LLC](/funds/2100121.md) | 2026-06-30 | $276.5m | 1,413,170 |  | Added +104,420 |
| [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $257.7m | 1,317,519 |  | Reduced −15,404 |
| [DIMENSIONAL FUND ADVISORS LP](/funds/354204.md) | 2026-06-30 | $151.8m | 775,944 |  | Reduced −42,370 |
| [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $138.3m | 707,161 |  | Added +37,393 |
| [NOMURA ASSET MANAGEMENT INTERNATIONAL INC.](/funds/921739.md) | 2026-06-30 | $132.9m | 679,387 |  | Reduced −34,789 |
| [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $92.3m | 471,735 |  | Added +67,738 |
| [AMERICAN CENTURY COMPANIES INC](/funds/748054.md) | 2026-06-30 | $86.1m | 439,923 |  | Reduced −38,873 |
| [BARROW HANLEY MEWHINNEY & STRAUSS LLC](/funds/313028.md) | 2026-06-30 | $82.0m | 419,050 |  | Reduced −111,621 |
| [Fisher Asset Management, LLC](/funds/850529.md) | 2026-06-30 | $69.0m | 352,761 |  | Added +48,254 |

## Recent filings

[All 1,295 filings](/companies/kalu/filings.md)

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-22 | 17:04 ET | [10-Q](/filings/0001193125-26-429090.md) | Quarterly report, period 2026-09-30 | 0001193125-26-429090 |
| 2026-10-21 | 16:40 ET | [8-K](/filings/0001193125-26-427927.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-427927 |
| 2026-10-13 | 16:40 ET | [8-K](/filings/0001193125-26-420533.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-420533 |
| 2026-08-17 | 16:16 ET | [8-K](/filings/0001193125-26-354093.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-26-354093 |
| 2026-07-23 | 17:07 ET | [10-Q](/filings/0001193125-26-314580.md) | Quarterly report, period 2026-06-30 | 0001193125-26-314580 |
| 2026-07-22 | 16:40 ET | [8-K](/filings/0001193125-26-312472.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001193125-26-312472 |
| 2026-07-13 | 16:40 ET | [8-K](/filings/0001193125-26-302091.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-302091 |
| 2026-06-04 | 16:30 ET | [8-K](/filings/0001193125-26-257524.md) | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001193125-26-257524 |
| 2026-04-28 | 16:50 ET | [DEF 14A](/filings/0001193125-26-187425.md) | Proxy statement, period 2026-06-04 | 0001193125-26-187425 |
| 2026-04-23 | 16:44 ET | [10-Q](/filings/0001193125-26-173882.md) | Quarterly report, period 2026-03-31 | 0001193125-26-173882 |

## Latest annual report

[Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001193125-26-059575.md), filed Feb 19, 2026.

## Forecast league

Not in this season’s league. [This season’s league](/leagues.md)

## About the filer

- CIK: 811596
- Tickers: KALU
- Exchange: Nasdaq
- SIC code: 3350 Rolling Drawing & Extruding of  Nonferrous Metals
- 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 30, 2026, 13:57 ET. No prices; not investment advice.