Westlake Corporation Credit Agreement

Westlake Corporation entered into a new unsecured revolving credit facility agreement for up to $1.5 billion, replacing its previous facility. The new agreement, effective April 2, 2026, matures on April 2, 2031. Borrowings will bear interest based on the Term SOFR rate or ABR, with varying spreads depending on Westlake's credit rating. The facility includes a $150 million sub-limit for letters of credit and a $50 million sub-limit for swingline loans. Westlake also has the option to increase the facility size by up to $500 million under certain conditions. The agreement includes customary covenants, such as a quarterly total leverage ratio, and events of default that could lead to accelerated repayment.