Quick answer
Westlake Corporation (WLK) reported revenue of $11.17B and net loss of $1.51B for the fiscal year ended 2025-12-31, down 8.0% from $12.14B the year before, per its 10-K filed with the SEC on 2026-02-26. Long-term debt stood at $5.58B.
Data as of 2025-12-31. Source: SEC EDGAR XBRL company facts (10-K/10-Q filings)
| Fiscal year | Revenue | Net income | Long-term debt |
|---|---|---|---|
| 2025 (FY ending 2025-12-31) | $11.17B | -$1.51B | $5.58B |
| 2024 (FY ending 2024-12-31) | $12.14B | $602.0M | $4.56B |
| 2023 (FY ending 2023-12-31) | $12.55B | $479.0M | $4.91B |
| 2022 (FY ending 2022-12-31) | $15.79B | $2.25B | $4.88B |
| 2021 (FY ending 2021-12-31) | $11.78B | $2.02B | $5.18B |
| 2020 (FY ending 2020-12-31) | $7.50B | $330.0M | $3.57B |
| 2019 (FY ending 2019-12-31) | $8.12B | $421.0M | $3.44B |
| 2018 (FY ending 2018-12-31) | $8.63B | $996.0M | $2.67B |
| 2017 (FY ending 2017-12-31) | $8.04B | $1.30B | $3.84B |
| 2016 (FY ending 2016-12-31) | $5.08B | $399.0M | $3.68B |
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Last updated 2026-10-16. Data only, not financial or tax advice.