Notice regarding Completion of Succession of Japan Tobacco Inc.’s Pharmaceutical Business through Simplified Absorption-Type Company Split

OSAKA, Japan, December 1, 2025 - Shionogi & Co., Ltd. (Head Office: Osaka, Japan; Chief Executive Officer: Isao Teshirogi, Ph.D.; hereafter "Shionogi") announced today that, as stated in its press release dated May 7, 2025, titled “Announcement of Agreement on Company Split (Simplified Absorption-Type Split) of Japan Tobacco Inc.’s Pharmaceutical Business and Acquisition of Shares of Akros Pharma Inc. by Shionogi Inc. (Making It a Subsidiary),” and in the update disclosed on September 25, 2025, titled “Notice Regarding Execution of Absorption-Type Company Split Agreement (Simplified Absorption-Type Split) for Business Succession,” Shionogi has completed the succession of Japan Tobacco Inc.’s pharmaceutical business and the acquisition of shares of Akros Pharma Inc. by Shionogi Inc.

Forward-Looking Statements

This announcement contains forward-looking statements. These statements are based on expectations in light of the information currently available, assumptions that are subject to risks and uncertainties which could cause actual results to differ materially from these statements. Risks and uncertainties include general domestic and international economic conditions such as general industry and market conditions, and changes of interest rate and currency exchange rate. These risks and uncertainties particularly apply with respect to product-related forward-looking statements. Product risks and uncertainties include, but are not limited to, completion and discontinuation of clinical trials; obtaining regulatory approvals; claims and concerns about product safety and efficacy; technological advances; adverse outcome of important litigation; domestic and foreign healthcare reforms and changes of laws and regulations. Also for existing products, there are manufacturing and marketing risks, which include, but are not limited to, inability to build production capacity to meet demand, lack of availability of raw materials and entry of competitive products. The company disclaims any intention or obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise.

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