Olin and Huntsman Clear U.S. Antitrust Waiting Period for Merger

Olin and Huntsman announced that the U.S. Hart-Scott-Rodino waiting period for their pending merger of equals has expired, satisfying one key closing condition. Shareholders of both companies approved the transaction on August 25, 2026. Closing remains subject to customary conditions, including additional regulatory approvals that are underway. Olin produces chlor-alkali products such as chlorine, caustic soda, vinyls, epoxies and chlorinated organics, while Huntsman reported about $6 billion in 2025 continuing-operations revenue.

Key facts

Market context

Chlorine and caustic soda are co-produced in chlor-alkali electrolysis, so their output is tied together: making one yields the other, and producers adjust operating rates to balance both. Chlorine is a building block for vinyls such as PVC, which go into pipe, window profiles, flooring and packaging, while caustic soda is used in pulp and paper, alumina, water treatment and many chemical syntheses. Epoxy resins, derived from chlorinated intermediates, serve coatings, adhesives, composites and electronics. Demand therefore tracks construction, infrastructure, consumer goods and industrial manufacturing. When two large suppliers combine, buyers typically watch for changes in contract terms, allocation practices and the mix of capacity, since a broader product portfolio can shift negotiating leverage. Regulatory review in the U.S. is one step; other approvals must still be completed before any change in supply dynamics can occur.

Source: official release on huntsman.com. Summary and context written by Market Krystal.