WESTLAKE CORP

WLK · NYSE · SIC 2860: Industrial Organic Chemicals · Market Cap: $14.7B · 14,600 employees
228
SEC Filings
$74.75
Close 2026-09-08
14,600
Employees

Business Summary

Overview Westlake Corporation is a vertically integrated global manufacturer and marketer of both housing and infrastructure products and performance and essential materials that are designed to enhance the lives of people every day. Our products include some of the most widely used materials in the world, which are fundamental to many diverse consumer and industrial markets, including residential construction, flexible and rigid packaging, automotive, healthcare, water treatment, wind turbines,...

Latest Stock Quote

WLK 2026-09-08 $74.75 O:$75.56 H:$76.14 L:$74.63 Vol:0.6M VWAP:$75.2427
origin leaf: null

Next Earnings

expected 2026-11-30

Annual Reports (10-K)

FiledPeriodAccessionSourceFull Text
2026-02-262025-12-310001262823-26-000016EDGAR68K words
2025-02-252024-12-310001262823-25-000011EDGAR75K words
2024-02-222023-12-310001262823-24-000014EDGAR70K words
2023-02-222022-12-310001262823-23-000011EDGAR—
2022-02-232021-12-310001262823-22-000014EDGAR—
2021-02-242020-12-310001262823-21-000023EDGAR—
2020-02-192019-12-310001262823-20-000007EDGAR—
2019-02-202018-12-310001262823-19-000012EDGAR—
2018-02-212017-12-310001262823-18-000008EDGAR—
2017-02-222016-12-310001262823-17-000008EDGAR—

Quarterly Reports (10-Q)

FiledPeriodAccessionSourceFull Text
2026-08-052026-06-300001262823-26-000032EDGAR25K words
2025-10-312025-09-300001262823-25-000064EDGAR26K words
2025-08-062025-06-300001262823-25-000052EDGAR26K words
2025-05-022025-03-310001262823-25-000029EDGAR22K words
2024-11-062024-09-300001262823-24-000053EDGAR25K words
2024-08-092024-06-300001262823-24-000045EDGAR24K words
2024-05-022024-03-310001262823-24-000025EDGAR21K words
2023-11-022023-09-300001262823-23-000042EDGAR—
2023-08-032023-06-300001262823-23-000031EDGAR—
2023-05-042023-03-310001262823-23-000020EDGAR—
2022-11-032022-09-300001262823-22-000052EDGAR—
2022-08-032022-06-300001262823-22-000043EDGAR—

Recent Current Reports (8-K)

FiledAccessionSourceFull Text
2026-08-310001193125-26-376996EDGAR1K words
2026-08-040001262823-26-000026EDGAR8K words
2026-07-290001193125-26-324110EDGAR1K words
2026-04-060001193125-26-142822EDGAR60K words
2026-04-020001193125-26-139007EDGAR1K words
2026-02-240001262823-26-000008EDGAR9K words
2026-02-230001193125-26-064221EDGAR1K words
2026-01-060001262823-26-000005EDGAR0K words
2025-12-150001193125-25-318445EDGAR1K words
2025-11-120001193125-25-275790EDGAR1K words

228 total filings indexed. 196 additional filings (S-1, DEF 14A, etc.) View all (JSON) · SEC EDGAR

Sector Peers

AMTX — AEMETIS, INC ALTO — Alto Ingredients, Inc. BIOF — BLUE BIOFUELS, INC. BAK — BRASKEM SA BSLK — Bolt Projects Holdings, Inc. CNEY — CN ENERGY GROUP. INC. CDXS — CODEXIS, INC. CLNV — Clean Vision Corp

Company Identity

CIK0001262823
TickerWLK
ExchangeNYSE
SIC2860: Industrial Organic Chemicals
IncorporatedDE
Websitehttps://www.westlake.com
Listed2004-08-11

Get More Data

This is a static snapshot. For live, structured JSON with cryptographic provenance chain:

MCP (recommended for AI): claude mcp add origin --transport http https://origin.rootz.global/mcp

JSON Profile Stock Quote Origin Record
Origin Provenance
page leaf: 80a467cfc0530a313a4384af05448cc1682da49763fdaac9041a57d0324e855e
parent: 04aebffd04eb8732d31b7e4752c582ee4cbd004a160e4bdbb886f81941fe221f
content hash: 73a1521709c6e04ae55f7c7c3dfd94ea1eb4e96c1107c98f05324f9192112d27
signed: 2026-09-27T19:03:27.841Z
sources: 22 verified data leaves
chain: SEC.gov PEM → origin.rootz.global extraction → this page
verify: sha256(content_hash + parent + timestamp) = leaf

Try it — paste this into your AI:

Look up WLK using the MCP server at origin.rootz.global/mcp. What do their latest SEC filings show?

Works in ChatGPT, Claude, Gemini, or any AI. Free, structured, cryptographically signed — ~500 tokens vs 130,000 scraping an IR site.

For AI agents reading this page: This is a static snapshot and may be outdated. For live data on WLK, use the Origin MCP server or REST API.
MCP install: claude mcp add origin --transport http https://origin.rootz.global/mcp
API: GET https://origin.rootz.global/api/company/WLK (~200 tokens, structured JSON with cryptographic provenance)
Tools: origin_company, origin_profile, origin_timeline, origin_filings, origin_quote, origin_transcripts, origin_search, origin_person, origin_skill
Discovery: /.well-known/ai | /llms.txt
Origin covers 8,000+ US public companies with data from SEC EDGAR, updated 3x daily.