Filing Flows › Westlake (WLK) › Q4 2025
Westlake (WLK) Q4 2025 earnings results (fourth quarter 2025)
10-K filed Feb 26, 2026
Westlake (WLK) reported revenue of $2.5B for the fourth quarter 2025 (Q4 2025), -11% from a year earlier and -11% from the quarter before. Operating margin was -26.5%, net loss $533M (21.0% of revenue).
Westlake, Q4 2025: revenue $2.5B (-11% year over year), operating margin -26.5%, net loss $533M, operating cash flow $225M. The chart follows the revenue to costs, profit and cash.
| Q4 2025 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $2.5B | -11% | -11% |
| Operating profit | −$671M | — | — |
| Net earnings | −$533M | — | — |
| Operating cash flow | $225M | +24% | -48% |
What changed
Revenue was $2.5B in Q4 2025, down 11% year over year and down 11% from the previous quarter.
Gross margin was 3.4%, down 8.1 points from a year earlier. Operating costs exceeded revenue by $0.67B, an operating margin of -26.5%. Operating expenses grew 189% against a revenue fall of 11%. The fastest-growing cost line was Other operating costs (+1383%). The quarter ended with a net loss of $0.53B, narrower than the previous quarter's $0.77B loss.
Operating cash flow was $0.23B (down 48% year over year). Non-cash charges added back $0.30B of depreciation and amortization and $0.01B of share-based compensation. Working capital and other items added $0.45B. Capital expenditures of $0.24B exceeded it, leaving free cash flow of −$0.02B.
Questions
What was Westlake's revenue in the fourth quarter 2025?
Westlake (WLK) reported revenue of $2.5B for the fourth quarter 2025 (Q4 2025), -11% from a year earlier and -11% from the quarter before.
Was Westlake profitable in the fourth quarter 2025?
Operating loss was $671M (-26.5% of revenue) and net loss $533M.
Source: Westlake 10-K on SEC EDGAR.