2801 POST OAK BLVD, HOUSTON, TX
To Optimize European Chlorovinyls Footprint with Closure of Cologne PVC Plant
Tommy E. Darby Appointed Vice President, Chief Accounting Officer
Reports Second Quarter 2026 Results
Other Events
Expands Global Chlorovinyls Manufacturing Capacity With Acquisition Of PVC And VCM Plants In Wilhelmshaven, Germany
Westlake Corporation Elects Five Directors and Approves Executive Compensation
Reports First Quarter 2026 Results
Reg. FD
Q2
Q1
FY 2025
Q3
FY 2023
Registration of Securities
Certificate
Prospectus filed pursuant to Rule 424(b)(5)
S-3ASR
Registration Statement for Securities to be Offered to Employees
Definitive Proxy Statement
Additional Proxy Materials
Additional Proxy Soliciting Materials
Statement of Changes in Beneficial Ownership
Initial Statement of Beneficial Ownership
Specialized Disclosure Report
Free Writing Prospectus
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