Form 4 Filing for Aflac Inc.

Japan Post Holdings Co., Ltd., a ten percent owner, reported the sale of Aflac Inc. common stock on March 12, 2026. The sales were executed through transactions coded as 'S' (sale) with disposed shares indicated by 'D'. Two transactions are detailed: the first involved 16,639 shares at a weighted average price of $109.58, resulting in 52,151,361 shares owned post-transaction. The second transaction involved 1,261 shares at a weighted average price of $109.92, leaving 52,150,100 shares owned. Footnote 1 clarifies that the prices reported are weighted averages for sales conducted within ranges of $108.845 to $109.845. Footnote 3 provides a similar clarification for the second transaction, with prices ranging from $109.850 to $110.005. Footnote 2 explains that the securities are held by J&A Alliance Holdings Corporation as trustee for the J&A Alliance Trust, and Japan Post Holdings Co., Ltd. may be deemed to beneficially own these shares due to its role as settlor and beneficiary of the trust. The reporting owner expressly disclaims beneficial ownership except to the extent of its pecuniary interest.