Westlake(WLK) - 2025 Q4 - Annual Results

EXHIBIT 99.1 WESTLAKE CORPORATION Contact—(713) 960-9111 Investors—Steve Bender Media—L. Benjamin Ederington Westlake Corporation Reports Fourth Quarter and Full Year 2025 Results • Meaningful actions taken in 2025 to optimize footprint, improve plant reliability, and structurally reduce costs expected to provide earnings improvement in 2026 HOUSTON--(BUSINESS WIRE)--Westlake Corporation (NYSE: WLK) (the "Company" or "Westlake") today announced fourth quarter and full year 2025 results. i SUMMARY FINANCIAL ...