Westlake Corporation 10-K filed Feb 26, 2026

Modified · Overview

We are Westlake Corporation is a vertically integrated global manufacturer and marketer of performance both housing and essential materialsinfrastructure products and housingperformance and infrastructure productsessential 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 products, healthcare products, water treatment, wind turbines, coatings as well as other durable and non-durable goods. We operate in two principal operating segments, Performance and Essential Materials and Housing and Infrastructure Products. (HIP) and Performance and Essential Materials includes Westlake North American Vinyls, Westlake North American Chlor-alkali & Derivatives, Westlake European & Asian Chlorovinyls, Westlake Olefins, Westlake Polyethylene and Westlake Epoxy(PEM). Housing and Infrastructure Products includes Westlake Royal Building Products, Westlake Pipe & Fittings, Westlake Global Compounds and Westlake Dimex. We are highly integrated along our materials chain with significant downstream integration from ethylene and chlor-alkali (chlorine and caustic soda) into vinyls, polyethylene (PE) and styrene monomerepoxy. We also have substantial downstream integration from polyvinyl chloride ("PVC") into our HIP segment for our residential building products, PVC pipespipe and fittings and PVC compounds in our Housing and Infrastructure Products segment.