JAPAN POST BANK : Notice Concerning Unrealized Losses on Securities for the Six Months Ended September 30, 2023

This document has been translated from the Japanese original for reference purposes only. In the event ofany discrepancy between this translated document and the Japanese original, the original shall prevail.

October 27, 2023

Company Name：JAPAN POST BANK Co., Ltd.

Representative：IKEDA Norito, Director, President and Representative Executive Officer (Securities Code: 7182, Tokyo Stock Exchange Prime Market)

Notice Concerning Unrealized Losses on Securities

For the Six Months Ended September 30, 2023

JAPAN POST BANK Co., Ltd. (the "Company") hereby announces that it has completed a calculation of total amount of unrealized losses on securities held by the Company for the six months ended September 30, 2023, as follows.

1. Securities subject to the calculation

(A) Total amount of unrealized losses on securities for the six	836,601
months ended September 30, 2023 (Millions of yen)
(B) Consolidated ordinary income for the fiscal year ended	455,566	(183.6％)
March 31, 2023 (A/B × 100) (Millions of yen)
(C) Net income attributable to owners of parent for the fiscal	325,070	(257.3％)
year ended March 31, 2023 (A/C × 100) (Millions of yen)

Notes 1.Securities subject to the calculation are those held-to-maturity securities that are listed on a Japanese financial instruments exchange.

2.Book value of the securities subject to the calculation ¥13,360,889 million Market value ¥12,524,288 million

2. Impact on the financial results

This matter will have no impact on the consolidated earnings forecast and annual dividends forecasts for the fiscal year ending March 31, 2024 (April 1, 2023 to March 31, 2024).

An announcement will be made promptly if matters due for disclosure arise.

END

(Reference)

1. The Company's second quarter of fiscal year ends on September 30.
2. Unrealized gains and net unrealized gains or losses on held-to-maturity securities for the six months ended September 30, 2023, are as follows.

(D) Total unrealized gains on securities for the six months ended	2,035
September 30, 2023 (Millions of yen)
(E) Total net unrealized gains or losses on securities for the six	(834,565)
months ended September 30, 2023 (D−A) (Millions of yen)