Notice Regarding Acquisition of Treasury Stock through Off-auction Share Buyback Trading (ToSTNeT-3)

Overview of Treasury Stock Acquisition

Japan Post Bank Co., Ltd. resolved at the board meeting held on December 23, 2025, to acquire treasury stock through off-auction share buyback trading (ToSTNeT-3). The target for acquisition is the Company's common shares, with a maximum total number of shares to be acquired of 14,117,600 shares and a maximum total acquisition amount of JPY 29,999,900,000. The acquisitions will be conducted on the ToSTNeT-3 market of the Tokyo Stock Exchange starting at 8:45 AM on December 24, 2025, with orders limited to the transaction period. The acquisition period is from December 24, 2025 through March 24, 2026. If the upper limits are not reached via ToSTNeT-3 purchases, market purchases under a discretionary trading agreement are planned from January 5, 2026 onward.

Background and Purpose of Acquisition

This treasury stock acquisition is conducted with the objectives of shareholder returns and improving capital efficiency. Based on the board resolution, the acquisition methods include purchases through ToSTNeT-3 and market purchases under a discretionary trading agreement, with set upper limits on the number of shares and acquisition amounts. Additionally, Japan Post Holdings Co., Ltd. plans to sell 7,058,800 shares of the Company's common stock, which may affect the implementation of market purchases to maintain its voting rights ratio at or below one-half.