Westlake Growth & Investment Strategy

Sustainability is Embedded in Our Operations Sustainable Products Proactive Environmental Site Footprint Westlake Sustainability Communications to Engage Constituencies Trade Association Voice ESG Ratings Engagement Investments In Sustainability Capabilities • Dimex acquisition expands Westlake's product portfolio in a variety of consumer products through one of the largest processors of post- industrial recycled plastics material in the U.S. Epoxy acquisition makes Westlake a global leader in epoxies critical for the manufacture of pioneering light weighting components for automobiles, aerospace and wind turbines Continuing Creation of Innovative Green Products • • Introduced Green Vin TM to the European market with more than a 30% CO2 footprint reduction compared to conventional caustic soda PVC Oriented Pipe uses less material while delivering the enhanced strength and capabilities of current PVC pipes ⚫ Bio-based solutions for building materials 12 Strong Relationship with Associations Supporting Our Environmental Commitment ALLIANCE TO MRFF END PLASTIC WASTE FPA Flexible Packaging Association FOR THE MEMBER VSC VINYL SUSTAINABILITY COUNCIL PARTICIPATING IN +VANTAGE Westlake has reduced total greenhouse gas emissions by 8.7% despite an increase in production of 4.8% from 2016-20 Goal of 20% reduction in CO₂ scope 1 & 2 intensity by 2030 Westlake

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