Business Wire·Dec 15, 2025, 8:30 AM ET

Westlake to Rationalize Certain North American Chlorovinyl and Styrene Assets

Westlake Corporation approved plans to cease operations of three North American chlorovinyl facilities: a PVC plant in Aberdeen, Mississippi; a VCM plant in Lake Charles, Louisiana North; and a diaphragm chlor-alkali unit in Lake Charles, Louisiana South.
The company also approved the closure of its styrene production plant located in Lake Charles, Louisiana.
Cessation of operations for all affected facilities is scheduled to occur in December 2025.
The closures are expected to result in a workforce reduction of approximately 295 employees.
Westlake expects to incur total pre-tax costs of approximately $415 million related to the closures, including $357 million in noncash charges, $25 million in severance costs, and $33 million in other shutdown costs.
Most of the noncash charges, severance costs, and shutdown costs will be recognized in the fourth quarter of 2025, with cash outflows expected over several years.
The company will continue supplying PVC, VCM, and chlor-alkali products from its seven remaining North American chlorovinyl facilities.
Post-closure global capacity is projected at 5,520 million pounds of suspension PVC, 7,630 million pounds of VCM, 6,680 million pounds of chlorine, and 7,510 million pounds of caustic soda.
Westlake will host a conference call on December 15, 2025, at 10:00 AM Eastern Time to discuss the closures and financial performance, featuring CEO Jean-Marc Gilson, CFO Steve Bender, and CAO Jeff Holy.