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Stocks Industrials WLK

NYSE · Industrials

Westlake Corp (WLK)

Westlake Corp brought in $11.3B of revenue over the twelve months to June 30, 2026, down 4.0% from a year earlier. It posted a net loss of $1.2B. In fiscal 2025 capital spending exceeded operating cash flow by $530M. At June 30, 2026 it held $1.6B in cash against $5.1B of debt. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 5, 2026.

Price
$67.71
+1.42% on the day · September 25, 2026
52-week range $56.33 to $124.23
Market cap
$8.7B
Revenue (last 12 months)
$11.3B
-4.0% year on year
Net margin
-10.9%

What Westlake Corp does

Westlake Corp is registered with the SEC under industry code SIC 2860 (Industrial Organic Chemicals). Its shares trade on NYSE under the ticker WLK.

Revenue and profit by year

Revenue
FY18: $8.6B $8.6B FY18FY19: $8.1B $8.1B FY19FY20: $7.5B $7.5B FY20FY21: $11.8B $11.8B FY21FY22: $15.8B $15.8B FY22FY23: $12.5B $12.5B FY23FY24: $12.1B $12.1B FY24FY25: $11.2B $11.2B FY25
Net income
FY18: $996M $996M FY18FY19: $421M $421M FY19FY20: $330M $330M FY20FY21: $2B $2B FY21FY22: $2.2B $2.2B FY22FY23: $479M $479M FY23FY24: $602M $602M FY24FY25: -$1.5B -$1.5B FY25

Fiscal years as reported in annual reports. Amounts in USD.

Key figures

Fiscal yearRevenueOperating incomeNet incomeDiluted EPSFree cash flow
2025$11.2B-$1.6B-$1.5B-$11.70-$530M
2024$12.1B$875M$602M$4.64$306M
2023$12.5B$729M$479M$3.70$1.3B
2022$15.8B$3.1B$2.2B$17.34$2.3B
2021$11.8B$2.8B$2B$15.58$1.7B
2020$7.5B$429M$330M$2.56$772M

Latest SEC filings

What Westlake Corp has filed recently, newest first. Each links to the original document on SEC EDGAR.

  1. August 31, 2026
    Executive or director change 8-K
  2. August 5, 2026
    Quarterly report 10-Q · period to June 30, 2026
  3. August 4, 2026
    Quarterly results 8-K
  4. July 29, 2026
    Other event 8-K
  5. June 15, 2026
    Investor disclosure 8-K
  6. May 18, 2026
    Conflict minerals disclosure SD
  7. May 18, 2026
    Shareholder vote results 8-K
  8. May 6, 2026
    Quarterly report 10-Q · period to March 31, 2026
  9. May 5, 2026
    Quarterly results 8-K
  10. May 1, 2026
    Investor disclosure 8-K

Recent insider filings (Forms 3, 4 and 144): 10, the latest on September 1, 2026. Insider transactions on SEC

All filings on SEC EDGAR

Questions about WLK

What does Westlake Corp do?

Westlake Corp is registered with the SEC under industry code SIC 2860 (Industrial Organic Chemicals). Its shares trade on NYSE under the ticker WLK.

Is Westlake Corp profitable?

No. Over the twelve months to June 30, 2026 it reported a net loss of $1.2B on revenue of $11.3B.

How much revenue does Westlake Corp make?

Over the twelve months to June 30, 2026 Westlake Corp reported revenue of $11.3B. That is 4.0% less than a year earlier.

When did Westlake Corp last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 5, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the insider trade from September 1, 2026.

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Where the numbers come from

Financial figures are the values Westlake Corp tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.