JSR Corporation (Head Office: Minato-ku, Tokyo; Representative Director, CEO and President: Tetsuro Hori; hereinafter “JSR”) hereby announces that it has been informed of a share transfer agreement entered into on November 9, 2026, between an investment fund managed and operated by JIC Capital, Ltd. (JIC Capital, Ltd. and the investment fund are hereinafter referred to individually or collectively as “JICC”) and Mitsui Chemicals, Inc. (“Mitsui Chemicals”). The agreement provides for the transfer of all JSR common shares held by the investment fund.

Under the share transfer agreement, Mitsui Chemicals, together with Development Bank of Japan Inc. (“DBJ”) plans to acquire all JSR common shares held by the investment fund. Following completion of the share transfer, the JSR common shares held by DBJ are expected to be converted into non-voting preferred shares. Mitsui Chemicals will hold 100% of JSR’s voting rights, and JSR is expected to become a consolidated subsidiary of Mitsui Chemicals.

Since its founding in 1957, JSR has developed its technological capabilities and customer base by responding to changes in the times and society and pursuing opportunities in new business areas. Today, JSR is working to achieve medium- to long-term growth and enhance corporate value through its core Digital Solutions Business. This business centers on the Electronic Materials Business, including photoresists for advanced semiconductor manufacturing, it also encompasses the Display Solution Business and the Optical Solution Business. In the Plastics Business, JSR is expanding its product offerings in high-value-added fields, with specialty ABS resins as the mainstay. JSR will continue to pursue this fundamental growth strategy following completion of the share transfer.

JSR and Mitsui Chemicals will be able to draw on each other’s technologies, product portfolios, customer bases and global business platforms in semiconductor materials. Together, they will strengthen advanced research and development, enhance global development and supply capabilities, and create new products.. Through these initiatives, both companies will further enhance the competitiveness of their respective businesses and create new value for customers and society.

Completion of the share transfer is subject to conditions precedent, including obtaining the necessary clearances, approvals and other authorizations under competition laws, foreign investment regulations and other applicable laws and regulations in Japan and overseas. Depending on the conditions and other factors, the timing of completion may change, or the share transfer may not be completed. JSR will promptly announce any matters requiring disclosure as they arise.