Notice on the Acquisition of Treasury Shares, the Acquisition of Treasury Shares Through Off-Auction Own Share Repurchase Trading System (ToSTNeT-3) and the Cancellation of Treasury Shares

KISSEI PHARMACEUTICAL CO., LTD. (the "Company") announces the Board of Directors on November 5, 2024 resolved on the following matters relating to the acquisition of treasury shares and method of acquisition pursuant to Article 156 of the Companies Act as applied pursuant to Article 165, Paragraph 3 of the Companies Act, and the cancellation of treasury shares pursuant to Article 178 of the Companies Act.

1. Reasons for acquisition and cancellation of treasury shares

To execute a flexible capital policy in response to changes in the business environment, while improving capital efficiency and enhancing shareholder returns.

2. Method of acquisition

The Company will entrust the acquisition of its own shares at the closing price (including the final special quote) of 3,780 yen as of this day (November 5, 2024) through ToSTNeT-3 of the Tokyo Stock Exchange at 8:45 a.m. as of November 6, 2024 (no change to other trading systems and the trading time shall be made). In addition, such purchase order shall be valid only at the trading time mentioned above.

3. Details of the acquisition

(1) Type of shares to be acquired: Common shares of the Company

(2) Total number of shares to be acquired: Up to 1,400,000 shares

(Percentage of total number of issued shares (excluding treasury shares): 3.17%)

(3) Total acquisition cost: 5,292,000,000 yen (maximum)

(4) Announcement of the results of the acquisition: The acquisition results shall be announced after the close of trading at 8:45 a.m. as of November 6, 2024.

Notes:

1. The number of shares to be acquired as above shall not be changed. In addition, the whole or a part of the acquisition of the Company's own shares may not be made according to the marketconditions.

2. Acquisition of the Company's own shares shall be made to sell orders matching buy orders.

4. Details of the cancellation

(1) Type of shares to be cancelled: Common shares of the Company

(2) Total number of shares to be cancelled: All treasury shares acquired through item 3 above

(3) Scheduled date of cancellation: November 29, 2024

(Reference)

Number of Treasury shares as of October 31, 2024

Total number of issued shares (excluding treasury shares): 44,205,187 shares

Number of treasury shares: 5,105,998 shares

Disclaimer: This document is an English translation of the original document in Japanese and has been prepared solely for reference purposes. In the event of any discrepancy between this English translation and the original in Japanese, the original shall prevail in all respects.