Clayton, Mo. and The Woodlands, Texas – – September 16, 2026 -- Olin Corporation (NYSE: OLN) and Huntsman Corporation (NYSE: HUN) confirmed that the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act has expired, clearing a key regulatory hurdle for their planned merger of equals.

HSR clearance removes a major closing condition for the chemical sector merger

The expiration satisfies one of the primary conditions required to close the transaction, though the deal still awaits additional regulatory approvals that are currently underway.