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Mitsui Chemicals to Acquire JSR in $11.6 Billion Deal as Japan Bolsters Chip Industry

By  |  November 9, 2026
Mitsui Chemicals to Acquire JSR in $11.6 Billion Deal as Japan Bolsters Chip Industry

Mitsui Chemicals has agreed to acquire semiconductor materials producer JSR Corp. in a transaction valued at approximately 1.84 trillion yen ($11.6 billion), marking a major consolidation in Japan’s chemicals industry as the country seeks to reinforce its position in the global semiconductor supply chain.

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    The acquisition, announced Monday, will involve Japan’s state-backed Development Bank of Japan (DBJ), which will contribute 200 billion yen in exchange for an ownership interest that will subsequently be converted into non-voting preferred shares, according to Reuters.

    The transaction will transfer JSR from government-backed Japan Investment Corp. (JIC) to Mitsui Chemicals, giving the Japanese chemical manufacturer control of a major supplier of specialized materials used in advanced semiconductor production.

    The deal is expected to become the largest acquisition in Japan’s chemicals sector, surpassing Showa Denko’s $4.55 billion purchase of Hitachi Chemical in 2020, Reuters reported.

    Financing Plans Raise Investor Concerns

    Mitsui Chemicals intends to finance the acquisition through a combination of borrowing, equity issuance and other capital-raising measures.

    According to Reuters, the company plans to secure a 1.64 trillion yen bridge loan and issue as much as 150 billion yen in new shares. Additional financing will include bank borrowing, debt securities and mezzanine capital, a form of funding that combines characteristics of debt and equity.

    The scale of the proposed financing has prompted questions about Mitsui Chemicals’ balance sheet and its ability to generate sufficient returns from the acquisition.

    Shares of Mitsui Chemicals declined 8.5% on Monday, extending losses recorded after Reuters identified the company as the prospective buyer the previous week.

    Based on Friday’s closing share price, Mitsui Chemicals had a market capitalization of approximately 664.6 billion yen, according to London Stock Exchange Group data cited by Reuters. The acquisition’s total value is therefore substantially greater than the buyer’s stock market valuation.

    The market reaction highlights investor concerns over the financial commitments required to integrate JSR and the uncertainty surrounding potential cost savings and commercial benefits.

    Semiconductor Expansion Drives Strategic Shift

    The acquisition represents a significant expansion of Mitsui Chemicals’ semiconductor materials operations, an area the company is positioning as an important source of future growth.

    JSR is a leading producer of photoresists, specialized light-sensitive chemicals used to transfer intricate circuit designs onto semiconductor wafers. These materials play a critical role in manufacturing advanced chips used in artificial intelligence systems, data centers and other high-performance computing applications.

    Mitsui Chemicals Chief Executive Officer Satoshi Ichimura described the transaction as part of a broader effort to reshape the company’s business portfolio rather than simply increase its presence in semiconductor materials, according to Reuters.

    The company expects the combination of the two businesses to generate an additional 40 billion yen in annual profit, Reuters reported.

    Management also plans to divest JSR’s life sciences division and other operations considered outside the combined company’s core strategy. Mitsui Chemicals aims to restore a financially sound position within three years through restructuring and other measures.

    The company believes that integrating the businesses’ technological expertise, personnel and commercial networks could create new opportunities in high-value semiconductor materials.

    However, the benefits may take time to materialize.

    Shogo Ikeuchi, chief executive of JIC Capital, cautioned that combining complementary product portfolios would not automatically produce substantial synergies, according to Reuters. He nevertheless indicated that closer cooperation between the companies could support technological development and long-term expansion.

    Japan Seeks Stronger Position in Global Chip Supply Chain

    The transaction comes as Japan seeks to preserve and strengthen its influence in semiconductor manufacturing amid rising global competition and investment in artificial intelligence infrastructure.

    Although Japan no longer dominates global chip fabrication, its companies remain important suppliers of specialized chemicals and materials required by semiconductor manufacturers.

    JSR’s acquisition is part of a broader effort to develop domestic businesses capable of competing internationally as demand for increasingly sophisticated semiconductor components expands.

    Source: Reuters