Huntsman-Olin Merger Advances: SEC Declares S-4 Effective, Stockholder Vote Set for August 25
HUN sits 64% above its 52-week low of $7.295.
Summary
Huntsman and Olin's proposed merger of equals reached a key milestone as the SEC declared the S-4 effective, and the companies set August 25, 2026 for special stockholder meetings to vote on the deal.
Key Events · M&A and Partnerships · HUN
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SEC Declares S-4 Effective
On July 13, 2026, the SEC declared the S-4 Registration Statement effective, enabling the companies to move forward with stockholder votes.
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Stockholder Vote Scheduled
Special meetings for both Huntsman and Olin stockholders are set for August 25, 2026, to vote on the all-stock merger of equals.
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Definitive Proxy Mailed
The definitive joint proxy statement/prospectus was mailed to shareholders on July 13, 2026, providing details on the transaction.
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Transaction Remains Subject to Approvals
Completion is still contingent on stockholder approvals from both companies and customary regulatory clearances.
Analysis · HUN · Industrial Applications And Services
A critical regulatory milestone has been reached: the SEC declared the S-4 registration statement effective, clearing the path for the stockholder vote on the all-stock merger of equals with Olin. The special meetings are now scheduled for August 25, 2026. While the merger was announced in June, this update confirms the process is on track and provides a concrete timeline for the next major step. The deal remains subject to stockholder and regulatory approvals, but this progress reduces uncertainty around the transaction's completion.
How filings like this one have moved
In the 30 days to Sep 13, 2026, 29.6% of the 1759 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.20%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, HUN was trading at $11.95 on NYSE in the Industrial Applications And Services sector, with a market capitalization of approximately $2.1B. The 52-week trading range was $7.30 to $16.09. This filing was assessed with positive market sentiment and an importance score of 7 out of 10.