Westlake (WLK) investor relations material

Strategic initiatives and profitability improvement

• Implementing a three-pillar plan targeting $600M annual EBITDA improvement by 2026 through footprint optimization, cost savings, and improved plant reliability, including the shutdown of unprofitable European Epoxy, North American Chlorovinyls, and Styrene facilities in 2025.

• Achieved $170M in cost savings in 2025, with an additional $200M targeted for 2026.

• Fewer planned turnarounds and unplanned outages are expected to further boost EBITDA by $200M in 2026.

Segment performance and market positioning

• Housing & Infrastructure Products (HIP) segment generated $4.1B in revenue for FY'25, with EBITDA of $839M and a margin of 20%, driven by strong demand for pipe & fittings despite a slowdown in residential construction.

• Performance & Essential Materials (PEM) segment reported $7.0B in revenue for FY'25, with a 4% EBITDA margin, impacted by lower PVC and polyethylene prices and higher feedstock costs.

• HIP is well-positioned for growth, with a broad product portfolio, strong brands, and partnerships with national builders and distributors.

Financial strength and capital allocation

• FY'25 revenue reached $11.2B with $1.1B EBITDA, supported by a strong balance sheet, 2.6x net debt to EBITDA, and $2.9B in available liquidity.

• Average debt maturity is 16 years, with fixed rates below 4% and strong credit ratings (S&P BBB, Moody's Baa2, Fitch BBB).

• Disciplined investment culture and operational excellence enable resilience through economic cycles and support strategic growth.