Westlake Growth & Investment Strategy

2022 Current capacity (~42 Billion lbs) PEM Capacity Additions and M&A with a Specialty Focus ~16% CAGR in Production Capacity Growth 2017 2020 Investments PVC: 200M lbs Chlor-Alkali & PVC: 2014 Starting capacity (~13 Billion lbs) Investments Ethylene & PVC: 620M lbs Acquisitions Vinnolit (Specialty PVC): ~5,200M lbs 2016 Investments Ethylene: 250M lbs Acquisitions Axiall (Chlor-Alkali): 20,560M lbs Investments Ethylene: 100M lbs 2019 Investments 860M lbs Acquisitions LACC JV (Ethylene): ~1,030M lbs 2021 Investments PVC: 200M lbs Acquisitions Epoxy (Specialty): 1,200M lbs 2014-2022 Capacity Additions ~30 Billion lbs Added & $6.3B in M&A 50 50 Westlake

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