Recent News

• 11.24.2025 - Westlake Announces Achievement of 2030 Emissions Target in 2024 Sustainability Report
• 11.06.2025 - Westlake Polyethylene Achieves ISCC PLUS Certification at Sulphur, Louisiana Site
• 10.16.2025 - Westlake Announces Third Quarter 2025 Earnings Conference Call
• 10.16.2025 - Westlake Chemical Partners Announce Third Quarter 2025 Earnings Conference Call
• 08.26.2025 - Westlake Announces Acquisition of ACI Compounding Solutions Business

Recent Filings

• 11.12.2025 - 8-K Current report
• 11.12.2025 - EX-99.1 EX-99.1
• 11.05.2025 - 8-K Current report
• 11.05.2025 - EX-99.1 EX-99.1
• 11.05.2025 - 424B5 Prospectus [Rule 424(b)(5)]
• 11.04.2025 - FWP Filing under Securities Act Rules 163/433 of free writing prospectuses
• 11.04.2025 - EX-99.1 EX-99.1
• 11.04.2025 - 424B5 Prospectus [Rule 424(b)(5)]
• 11.04.2025 - 8-K Current report
• 10.31.2025 - 10-Q Quarterly report [Sections 13 or 15(d)]