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WLKNYSEIndustrial Organic ChemicalsFiscal year ends December 31

WESTLAKE CORP

Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 5, 2026
$62.29−1.04 (-1.64%)

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
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

NamePositionShares owned
Albert ChaoExecutive Chairman, Director94,079,818
James ChaoSenior Chairman, Director93,455,328
Tommy DarbyVP and CAO–
Jonathan BakshtSVP and CFO–
Mark Steven BenderEVP & CFO35,895
Brian John PowersSVP, PEM Segment Head–
Robert F. BuesingerEVP, PEM Segment Head34,482
L. Benjamin EderingtonEVP, Legal & External Affairs80,158
Scott Thomas SzwejbkaSVP, HIP Segment Head13,773
Jeffrey Adam HolyVP and CAO5,124
Jean-Marc GilsonPresident and CEO–
Thomas J. JanssensSVP, Ops - PEM & Corp Logistic17,127
Kimberly S. LubelDirector13,821
Mark A. McCollumDirector11,824
Bhavesh V. PatelDirector–
Roger A. CreggDirector3,507
Jeffrey Wayne SheetsDirector14,927
R. Bruce NorthcuttDirector23,351
Carolyn Chao SabatDirector93,411,302
Catherine T. ChaoDirector27,171
Michael J. GraffDirector23,310
David Tsung-Hung ChaoDirector30,503
John Tsung-chen ChaoDirector93,413,442

CEO pay and shareholder return

Pay versus performance table from the proxy statement

Fiscal yearCEO total payCEO pay actually paidOther executives (avg)Value of $100 investedPeer 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