Notice Regarding Acquisition of Treasury Stock through Market Purchase Based on Discretionary Trading Agreement for Share Buyback

Overview of Treasury Stock Acquisition

Based on the resolution of the Board of Directors on December 23, 2025, Japan Post Bank Co., Ltd. plans to acquire up to 7,088,300 shares of common stock (maximum; representing 0.2% of total issued shares) with a total acquisition value of up to 15,000,050,000 yen through market purchases under a discretionary trading agreement relating to share buybacks, during the period from January 5, 2026 to March 24, 2026. The acquisition will be conducted in accordance with the Companies Act and the Bank’s Articles of Incorporation, and the method of acquisition is market purchase. Additionally, on December 24, 2025, 7,058,800 shares were already acquired for 14,999,950,000 yen through an off-auction block trade outside regular market sessions (ToSTNeT-3).

Background and Purpose of Acquisition

The share buyback aims to maintain Japan Post Holdings Co., Ltd.’s voting rights ratio in the Bank at one-half or less, as well as to improve capital efficiency. The cap on the number of shares to be acquired is set from the perspective of maintaining this voting rights ratio, and the actual acquisition amount may be significantly below the maximum. It is also noted that if available distributable amounts are insufficient due to significant financial market fluctuations or other factors, acquisitions may be partially or entirely suspended.