WESTLAKE CORP
Close on Oct 19, 2026
- Market cap
- $8.00B
- P/E (TTM)
- –
- Dividend yield
- 3.39%
About Westlake
Industrial Organic Chemicals, SIC 2860
Westlake Corporation manufactures and markets housing and infrastructure products as well as essential materials and specialty chemicals. The company operates through two primary divisions: Housing and Infrastructure Products (HIP) and Performance and Essential Materials (PEM). Its HIP segment provides building materials such as siding, trim, architectural stone veneer, roofing, windows, outdoor living items, polyvinyl chloride (PVC) pipes, fittings, and polymer compounds. The PEM segment produces chemical building blocks including ethylene, chlorine, caustic soda, vinyl chloride monomer, PVC, polyethylene, and epoxy resins. These offerings serve diverse end markets spanning residential and light commercial construction, municipal infrastructure, flexible and rigid packaging, automotive, coatings, electronics, and medical applications. Westlake markets its goods directly through internal sales personnel, manufacturer representatives, and regional distributor networks.
The enterprise maintains an extensive global manufacturing footprint comprising 64 facilities within its HIP segment—spanning North America, Europe, and Asia—alongside 47 North American distribution and warehousing hubs. Its PEM division operates multiple chemical processing sites across the United States, Canada, Germany, Spain, South Korea, China, and Taiwan. The provided text does not state the company's headquarters location.
Summary of the business section of Westlake's latest annual report, written by StockData.
Company profile
Company
- Legal name
- WESTLAKE CORP
- Founded
- 1986
- Headquarters
- Houston, TX
- Address
- 5444 Westheimer, Suite 101
- Phone
- (713) 960-9111
- Website
- www.westlake.com
- Employees
- 14,600, Dec 31, 2025
- Industry
- Industrial Organic Chemicals
- Incorporated in
- Delaware
- Fiscal year ends
- December 31
- Auditor
- PricewaterhouseCoopers LLP, Houston, Texas
Stock & identifiers
- Ticker
- WLK
- Exchange
- NYSE
- IPO date
- Aug 11, 2004
- Shares outstanding
- 128M, Jul 29, 2026
- Public float
- $2.50B, Jun 30, 2025
- Filer category
- Large accelerated filer
- Stock splits
- 2-for-1, Mar 19, 2014; 2-for-1, Feb 14, 2014
- SEC CIK
- 1262823
- CUSIP
- 960413102
- ISIN
- US9604131022
- LEI
- GOXNEVUM0LL78B1OS344
- EIN
- 76-0346924
Executives and directors
Officers and directors who filed ownership reports (Forms 3, 4, 5) in the last two years
| Name | Position | Shares owned |
|---|---|---|
| Albert Chao | Executive Chairman, Director | 94,079,818 |
| James Chao | Senior Chairman, Director | 93,455,328 |
| Tommy Darby | VP and CAO | – |
| Jonathan Baksht | SVP and CFO | – |
| Mark Steven Bender | EVP & CFO | 35,895 |
| Brian John Powers | SVP, PEM Segment Head | – |
| Robert F. Buesinger | EVP, PEM Segment Head | 34,482 |
| L. Benjamin Ederington | EVP, Legal & External Affairs | 80,158 |
| Scott Thomas Szwejbka | SVP, HIP Segment Head | 13,773 |
| Jeffrey Adam Holy | VP and CAO | 5,124 |
| Jean-Marc Gilson | President and CEO | – |
| Thomas J. Janssens | SVP, Ops - PEM & Corp Logistic | 17,127 |
| Kimberly S. Lubel | Director | 13,821 |
| Mark A. McCollum | Director | 11,824 |
| Bhavesh V. Patel | Director | – |
| Roger A. Cregg | Director | 3,507 |
| Jeffrey Wayne Sheets | Director | 14,927 |
| R. Bruce Northcutt | Director | 23,351 |
| Carolyn Chao Sabat | Director | 93,411,302 |
| Catherine T. Chao | Director | 27,171 |
| Michael J. Graff | Director | 23,310 |
| David Tsung-Hung Chao | Director | 30,503 |
| John Tsung-chen Chao | Director | 93,413,442 |
CEO pay and shareholder return
Pay versus performance table from the proxy statement
| Fiscal year | CEO total pay | CEO pay actually paid | Other executives (avg) | Value of $100 invested | Peer group |
|---|---|---|---|---|---|
| FY2025 Albert Chao | $0 | $0 | $5.17M | $98 | $122 |
| FY2025 Jean Marc Gilson | $6.42M | $3.73M | $5.17M | $98 | $122 |
| FY2024 Albert Chao | $10.92M | $4.98M | $4.63M | $148 | $124 |
| FY2024 Jean Marc Gilson | $4.26M | $3.60M | $4.63M | $148 | $124 |
| FY2023 Albert Chao | $11.97M | $22.75M | $6.04M | $178 | $124 |
| FY2023 Jean Marc Gilson | $0 | $0 | $6.04M | $178 | $124 |
“Actually paid” adjusts reported pay for changes in the value of equity awards. Shareholder return assumes $100 invested at the start of the measurement period, as disclosed by the company.
Employees
Headcount reported in annual reports
“As of December 31, 2025, we had approximately 14,600 employees in the following areas:”
Corporate history
Events identified from SEC filings