Westlake(WLK) - 2025 Q1 - Quarterly Results

EXHIBIT 99.1 WESTLAKE CORPORATION Contact—(713) 960-9111 Investors—Steve Bender Media—L. Benjamin Ederington Westlake Corporation Reports First Quarter 2025 Results HOUSTON--(BUSINESS WIRE)--Westlake Corporation (NYSE: WLK) (the "Company" or "Westlake") today announced first quarter 2025 results. SUMMARY FINANCIAL HIGHLIGHTS (in millions of dollars, except per share data and percentages) | | | Three Months | | Three Months | | Three Months | | --- | --- | --- | --- | --- | --- | --- | | | | Ended March 31, ...