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Company Dossier · Materials

Westlake Corporation

WLKNYSEWILMINGTON, US-DE, USMid capWebsite ↗
  • Russell 1000
  • MidCap 400

What Westlake Corporation is doing, read from its filings, its own words and the news, with every figure dated and sourced. Not investment advice: no ratings, no price targets.

Open the full company record in Palanor: guidance, KPIs, ownership, calls, prices →

The latest read

Computed from the data on Oct 22, 2026. Every figure links back to its source in the sections below.

  • Revenue over the four quarters to June 30, 2026: $11.3 billion, down 4.0% from a year earlier.SEC EDGAR filings (XBRL)
  • Free cash flow (operating cash flow minus capital expenditure) over the four quarters to June 30, 2026: −$0.26 billion.SEC EDGAR filings (XBRL)
  • Capital expenditure over the four quarters to June 30, 2026: $0.90 billion, down 12% from a year earlier.SEC EDGAR filings (XBRL)
  • Share buybacks in the fiscal year to December 31, 2025: $0.06 billion.SEC EDGAR filings (10-K)
  • Long-term debt issued in the fiscal year to December 31, 2025: $1.19 billion.SEC EDGAR filings (10-K)
  • Latest earnings call or results release (August 4, 2026): sentiment 0.30 on a −1 to +1 scale (mixed), confidence 0.60 of 1.Palanor Discourse
  • Latest annual report (filed February 26, 2026): 2 risk factors added, 1 removed.Risk Factor Changes (10-K Item 1A)
  • Insiders were net sellers in Q3 2026: $3.1 million on the open market.SEC Form 4
  • 359 institutional managers reported a position at June 30, 2026 (+20 on the quarter before).SEC Form 13F
  • H-1B filings certified in Q2 2026: 2 (2 a year earlier).U.S. Department of Labor (OFLC)

Risk events (12 months): 1 — latest EPA enforcement case, Aug 12, 2026 →

Company Posture covers S&P 500 companies.

Westlake Corporation's borrowing from its SEC filings: the bonds it priced and the debt on its latest balance sheet. A description, not a rating.

Bonds priced, last 12 months

None

U.S. dollar tranches with a term sheet on EDGAR. Deals sold under Rule 144A file none and are not counted.

PricedAmountCouponMaturesSpreadYield
Nov 4, 2025—5.550%2035 (10y)+150bp5.587%
Nov 4, 2025—6.375%2055 (30y)+175bp6.424%

From the pricing term sheets Westlake Corporation filed with the SEC. Spread is to the benchmark Treasury (or Bund, Gilt) at pricing.

Charts

Live charts: each one redraws from today’s data and has an image link to paste into a document or slide.

Cash flow

Business

Westlake Corporation: free cash flow, trailing twelve months

Operating cash flow minus capital expenditure, $ billions, from SEC filings

−$0.3BData to Jun 2026
ImageDataU.S. Securities and Exchange Commission, EDGAR
Business

Westlake Corporation: operating cash flow and capital expenditure

Trailing twelve months, $ billions, from SEC filings

Data to Jun 2026
ImageDataU.S. Securities and Exchange Commission, EDGAR
Business

Westlake Corporation: revenue, trailing twelve months

$ billions, from SEC filings

$11.3BData to Jun 2026
ImageDataU.S. Securities and Exchange Commission, EDGAR

Capital returned and raised

Business

Westlake Corporation: share buybacks by fiscal year

Cash paid to repurchase common stock, $ billions, from the 10-K

$0.06BData to Dec 2025
ImageDataU.S. Securities and Exchange Commission, EDGAR
Business

Westlake Corporation: debt issued and repaid by fiscal year

Long-term debt, $ billions, from the 10-K

Data to Dec 2025
ImageDataU.S. Securities and Exchange Commission, EDGAR
Business

Westlake Corporation: debt maturity schedule, latest annual report

Scheduled repayments of long-term debt principal by year from the fiscal year end, $ billions, from the 10-K

Data to Dec 2025
ImageDataU.S. Securities and Exchange Commission, EDGAR
Business

Westlake Corporation: debt due within a year and cash

At each balance-sheet date, $ billions, from SEC filings

Data to Jun 2026
ImageDataU.S. Securities and Exchange Commission, EDGAR
Business

Westlake Corporation: interest coverage

Operating income ÷ interest expense, trailing twelve months, from SEC filings

−6.1Data to Jun 2026
ImageDataU.S. Securities and Exchange Commission, EDGAR

What the company says

Business

Westlake Corporation: earnings call sentiment

Palanor Discourse score per call, −1 to +1

0.30Data to Aug 2026
ImageDataPalanor calculation
Business

Westlake Corporation: earnings call confidence

Palanor Discourse score per call, 0 to 1

0.60Data to Aug 2026
ImageDataPalanor calculation
Business

Westlake Corporation: risk factors added per annual report

New Item 1A risk factors in each 10-K

2.0Data to Feb 2026
ImageDataU.S. Securities and Exchange Commission, EDGAR

Hiring and ownership

Business

Westlake Corporation: H-1B filings certified

Labor Condition Applications by quarter received

2.0Data to Jun 2026
ImageDataU.S. Department of Labor, Office of Foreign Labor Certification disclosure data, dol.gov
Business

Westlake Corporation: insider net buying

Open-market purchases minus sales by officers and directors, $ millions, by quarter

−$3.1MData 22 days ago
ImageDataU.S. Securities and Exchange Commission, EDGAR
Business

Westlake Corporation: institutional holders

Managers reporting a position on Form 13F, by quarter

359.0Data to Jun 2026
ImageDataU.S. Securities and Exchange Commission, EDGAR

In the news

Headlines that name Westlake Corporation, with the publisher and a link. The tone is read from each headline’s own words, never from a summary of the article.

30 days
1 headlines
0% positive · 0% negative
90 days
1 headlines
0% positive · 0% negative

Filings and records

The last two years of notable 8-Ks, offerings, annual reports, federal awards, lobbying reports, patents and other public records, newest first.

  1. Oct 20, 2026Patent
  2. Oct 13, 2026Patent
  3. Sep 29, 20268-K
  4. Aug 31, 20268-K
  5. Aug 12, 2026Risk event
  6. Aug 6, 2026Lobbying
  7. May 18, 20268-K
  8. May 12, 2026Patent
  9. May 12, 2026Patent
  10. May 6, 2026Lobbying
  11. May 5, 2026Trademark
  12. Apr 20, 20268-K
  13. Apr 6, 20268-K
  14. Apr 6, 20268-K
  15. Apr 2, 20268-K
  16. Mar 17, 2026Patent
  17. Feb 26, 202610-K
    Annual report (10-K)2 risk factors added, 1 removed
  18. Feb 23, 20268-K
  19. Jan 20, 2026Lobbying
  20. Dec 15, 20258-K
  21. Nov 5, 20258-K
  22. Oct 27, 2025Lobbying
  23. Oct 20, 2025Lobbying
    Lobbying report (CAPITOL TAX PARTNERS, LLP)third_quarter 2025 · $0.1 million
  24. Oct 18, 2025Lobbying
    Lobbying report (CAPITOL COUNSEL LLC)third_quarter 2025 · $0.0 million
  25. Aug 5, 2025Lobbying
  26. Jul 21, 2025Lobbying
    Lobbying report (CAPITOL COUNSEL LLC)second_quarter 2025 · $0.1 million
  27. Jun 17, 20258-K
  28. May 12, 20258-K
  29. Apr 16, 20258-K
  30. Mar 4, 20258-K
  31. Feb 25, 202510-K
    Annual report (10-K)3 risk factors added, 0 removed
  32. Dec 11, 20248-K
  33. Feb 22, 202410-K
    Annual report (10-K)0 risk factors added, 0 removed

Peers

Companies in the same sector in the S&P 500, Russell 1000 or MidCap 400, closest in revenue first. Trailing twelve months, from SEC filings.

CompanyRevenueFree cash flowThrough
International Flavors & Fragrances IFF$10.8B$0.5BJun 30, 2026
Mosaic Company (The) MOS$12.3B−$0.9BJun 30, 2026
Air Products APD$12.6B—Jun 30, 2026
Celanese CE$9.7B$0.7BJun 30, 2026
Crown Holdings CCK$13.3B$1.2BJun 30, 2026
Packaging Corporation of America PKG$9.5B$0.7BJun 30, 2026
Commercial Metals CMC$9.4B$0.5BAug 31, 2026
Alcoa AA$13.6B$0.3BJun 30, 2026

Identity

SEC CIK
1262823
Wikidata
Q17326957

Built from SEC EDGAR filings (public domain), the Guidance and KPI Ledgers, Palanor Discourse, U.S. Department of Labor filings, USPTO, USAspending and Senate lobbying records, and rights-checked news headlines. Updated nightly; this page was built Oct 22, 2026. How the Dossier is built

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