Form 4 Filing by Japan Post Holdings Co., Ltd. for Aflac Inc.

Japan Post Holdings Co., Ltd., a 10% owner, reported the disposition of securities in Aflac Inc. on June 18, 2026. The transactions involved the sale of 600 shares of Common Stock at a weighted average price of $116.06 and 2700 shares at a weighted average price of $117.11. These sales were conducted under transaction code "S", indicating a sale, with the shares being disposed of ("D"). Following these transactions, Japan Post Holdings Co., Ltd. holds 50,926,335 shares. Footnote 1 clarifies that the $116.06 price is a weighted average for sales ranging from $115.47 to $116.46, and Footnote 3 provides similar clarification for the $117.11 price, representing sales from $116.515 to $117.25. Footnote 2 details the complex ownership structure, indicating that the securities are held by J&A Alliance Holdings Corporation as trustee, with Japan Post Holdings Co., Ltd. being the sole settlor and beneficiary of the trust.