WESTLAKE CORPORATION

The Company discloses its cybersecurity governance and risk management strategy in Item 1C of its 10-K filing. It describes a defense-in-depth approach using NIST frameworks, various technical controls (firewalls, EDR, patching), and third-party services (penetration testing, incident response retainer). The Company states it has not experienced material impacts from cybersecurity incidents in the past three years, though it acknowledges future risks. No specific breach event, victim entity (other than the filer itself), or materiality determination date is disclosed.