WESTLAKE CORP
Westlake Corporation is an international manufacturer and supplier of petrochemicals, polymers and fabricated building products, which are fundamental to various consumer and industrial markets. The company was founded by Ting Tsung Chao in 1986. it is the largest producer of low-density polyethylene (LDPE) in the US and ranks among the Forbes Global 2000. Westlake Chemical operates in two segments: Olefins and Vinyls, and is also an integrated producer of vinyls, with substantial downstream integration into polyvinyl chloride (PVC) building products.
Basic company information
Each field links to its source. Financial figures retain their reporting periods; background references are identified in the source list.
- Business sectors
- chemical industry; petroleum industry [1]
- Company / filing name
- WESTLAKE CORP [2]
- Headquarters location
- Houston [1]
- Founded
- 1986 [1]
- Legal form
- Delaware corporation [1]
- Founders
- Ting Tsung Chao [1]
- Official website
- www.westlake.com ↗ [1]
- Annual revenue
- USD 15,794,000,000 · reported year 2022 [1]
- ISIN (reported securities)
- US9604131022 [1]
- CIK
- 1262823 [2]
- Country in background record
- United States [1]
- Symbols / exchanges
- WLK (NYSE) [2]
Company positioning and business
Westlake Corporation is an international manufacturer and supplier of petrochemicals, polymers and fabricated building products, which are fundamental to various consumer and industrial markets. The company was founded by Ting Tsung Chao in 1986. it is the largest producer of low-density polyethylene (LDPE) in the US and ranks among the Forbes Global 2000. Westlake Chemical operates in two segments: Olefins and Vinyls, and is also an integrated producer of vinyls, with substantial downstream integration into polyvinyl chloride (PVC) building products. [3]
In 2026, it was ranked 388th among Houston-area Fortune 500 companies in the Greater Houston area. [3]
Background text: Wikipedia contributors, Westlake Corporation. Selected introductory paragraphs, licensed under CC BY-SA 4.0. Official filing data is cited separately.
Understanding company scale
Annual revenue: USD 15,794,000,000 · reported year 2022. [1]
Financial year, securities and disclosures
Listed securities: WLK (NYSE). Multiple symbols may represent different share classes or securities of the same registrant. [2]
History and key events
Founding / inception date recorded in Wikidata. [1]
Financial results and regulatory disclosures
No individual financial documents have been indexed yet. Open the source to consult company disclosures. [2]
Related entities and concepts
Frequently asked questions
When was WESTLAKE CORP founded?
Founded: 1986. The linked source provides the background record. [1]
Where is the headquarters of WESTLAKE CORP?
Headquarters location: Houston. The linked source provides the background record. [1]
Which business sectors are recorded for WESTLAKE CORP?
Business sectors: chemical industry; petroleum industry. The linked source provides the background record. [1]
Sources and review dates
- Wikidata — company background record (CC0) ↗
- Company identity and profile data ↗
- Wikipedia contributors — Westlake Corporation (CC BY-SA 4.0) ↗
Reviewed 23 October 2026. Financial periods and historical event dates are shown separately. Figures reflect their stated source dates; this page is not a live quote or investment recommendation.