Olin and Huntsman Plan Stock Swap Merger, Involving $2.43 Billion, With Combined Revenue of About $12.5 Billion Last Year

On June 16, 2026, Olin Corporation and Huntsman Corporation jointly announced a proposed merger through a stock-for-stock transaction, with a total transaction value of approximately US$2.43 billion. Upon completion of the merger, the two companies will be combined into a North American company. The giants' combined revenue is expected to be approximately $12.5 billion in 2025. According to the announcement, the exchange ratio for this share swap is set at 0.5476 new Olin shares for each Huntsman share. Upon completion of the transaction, existing Olin shareholders will hold approximately 54.5% of the shares of the newly combined company, while Huntsman shareholders will own approximately 45.5%. The exchange ratio for this share swap was determined with reference to the volume-weighted average market prices over the 30 trading days up to June 12, using a market-price-based exchange mechanism. Olin and Huntsman stated that this pricing method not only offsets the impact of Olin’s recent share price volatility and reflects current market conditions, but also provides Huntsman shareholders with a premium relative to the historical average share price. Olin, headquartered in Clayton, Missouri, and Huntsman, headquartered in The Woodlands, Texas, are both important companies in the North American chemical industry.