Olin and Huntsman combine to form OlinHuntsman chemicals company
Money MovesAn all-stock merger of equals moves toward August shareholder votes and a 2027 close
August 25th, 2026: Special shareholder meetings to vote on the dealNew here? Follow stories to track developments over time. Create a free account to get updates when stories you care about change.
Overview
Updated Jul 14Two of America's oldest chemical makers are trying to become one. On July 14, Olin and Huntsman said the Securities and Exchange Commission cleared the paperwork for their all-stock merger, sending the deal to shareholders for a vote on August 25.
If both sets of owners approve, the companies plan to close in the first half of 2027 and rename the combined business OlinHuntsman. The pitch is vertical integration: Olin makes chlorine and caustic soda, Huntsman turns similar chemistry into polyurethanes and coatings. Together they claim more than $400 million in yearly cost savings.
Why it matters
The merger would concentrate North American chlor-alkali and polyurethane supply in one firm, shaping prices for plastics, foams, and coatings used across manufacturing.
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A North American maker of chlor-alkali chemicals, epoxy, and Winchester ammunition.
A specialty chemical maker known for polyurethanes, advanced materials, and coatings.
The federal agency that reviews securities registrations and proxy disclosures.
Timeline
June 2026 August 2026
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Special shareholder meetings to vote on the deal
Latest VoteHuntsman stockholders vote on the merger; Olin shareholders vote on the share issuance and related proposals. Both approvals are required to proceed.
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SEC declares merger registration effective, votes scheduled
RegulatoryThe SEC declares Olin's Form S-4 effective, clearing the way for proxy mailings. Both companies set special shareholder meetings for August 25, 2026.
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Record date set for shareholder votes
ProceduralHolders of Olin and Huntsman shares as of this date are entitled to vote. Olin's close on this day implies about $11.06 per Huntsman share.
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Olin and Huntsman announce merger of equals
AnnouncementThe companies unveil an all-stock deal to form OlinHuntsman, with about $12.5 billion in combined 2025 revenue and more than $400 million in projected cost savings. Huntsman shares fall about 11%.
Historical Context
2 moments from history that rhyme with this story — and how they unfolded.
Dow and DuPont merger (2017)
Two chemical giants combined in a $130 billion merger of equals, then split into three focused companies. Regulators in the U.S. and Europe demanded asset sales in pesticides and plastics before clearing it.
The merged DowDuPont held together for about two years while it reorganized business lines.
It broke into Dow, DuPont, and Corteva in 2019, showing that a headline merger can be a step toward later separation.
It is the recent template for large chemical mergers of equals, including the regulatory demands and integration work OlinHuntsman would face.
Huntsman's failed merger with Clariant (2017-2018)
Huntsman agreed to a $20 billion all-stock merger of equals with Swiss chemical maker Clariant. Activist investors built a stake in Clariant and opposed the deal, and the two sides called it off.
Both companies stayed independent, and Huntsman later spun off and sold parts of its business.
The collapse showed how shareholder opposition can kill a chemical merger even after boards agree.
Huntsman has walked away from a merger of equals before. It highlights the shareholder-vote and investor-sentiment risk hanging over the Olin deal.
