16. Sep 2026
Olin–Huntsman merger clears US antitrust hurdle
Olin and Huntsman have passed a key US antitrust milestone in their proposed all-stock merger after the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act expired.
The expiry means the companies can proceed without a challenge from US federal antitrust authorities during the statutory review period. However, the transaction remains subject to further regulatory approvals and other customary closing conditions.
Shareholders in both companies approved the merger at separate meetings on August 25.
Announced in June, the transaction will combine Huntsman’s polyurethane systems, performance products and advanced materials businesses with Olin’s chlorine, caustic soda, vinyls, epoxy and chlorinated-organics operations. The resulting company will be called OlinHuntsman and headquartered in The Woodlands, Texas.
The companies reported combined 2025 sales of approximately USD 12.5 billion. They expect the transaction to produce more than USD 300 million in cost savings and integration benefits, largely within two years of completion, together with a further USD 100 million in raw-material integration benefits from 2031.
Huntsman shareholders will receive 0.5476 Olin shares for each Huntsman share. Existing Olin shareholders will own approximately 54.5% of the combined business, with Huntsman shareholders holding the remaining 45.5%.
Olin president and CEO Ken Lane will become CEO of OlinHuntsman. Huntsman chairman, president and CEO Peter Huntsman will serve as non-executive chairman, while Huntsman executive vice president and chief financial officer Phil Lister will become chief financial officer.
The companies continue to expect the merger to close during the first half of 2027.