(Correction) Notice Regarding the Commencement of a Tender Offer by Taiyo Kosan Co., Ltd. for Shares of Hisamitsu Pharmaceutical Co., Inc. (Securities Code: 4530)

Overview of the Tender Offer and Details of the Correction

Taiyo Kosan Co., Ltd. commenced a tender offer on January 7, 2026, for common shares, stock acquisition rights, and depositary receipts for shares of Hisamitsu Pharmaceutical Co., Inc. Due to the expiration of the waiting period under U.S. antitrust laws, certain items described in the tender offer notification dated January 7, 2026 (and the amendment dated January 14), required correction. Consequently, on February 3, 2026, an amended notification was submitted to the Kanto Finance Bureau. The corrections involve partial revisions to the tender offer commencement announcement and do not include any changes to the offer conditions.

Impact on Investors and Cautions

This tender offer is conducted under Japanese law and thus procedures and disclosure standards differ from those under U.S. securities laws. This is not a solicitation for sale; shareholders must review the tender offer explanatory statement and make their own decisions regarding participation. Additionally, the tender offeror and related parties may acquire shares outside the market, and there are uncertainties related to forward-looking statements. Investors are advised to consider this information carefully and respond with caution.