Aflac Inc: 10% owner Japan Post sold 13,000 shares

What happened Japan Post Holdings Co., Ltd., a 10% owner, sold a total of 13,000 shares of Aflac Inc common stock in open market transactions on Oct 8, 2026. The filing lists four disposals: 3,257 shares at $112.95 for $367,878; 950 shares at $113.81 for $108,120; 8,393 shares at $115.05 for $965,615; and 400 shares at $115.64 for $46,256, for a total of $1,487,869.

Key details

• Transaction date: Oct 8, 2026; transaction type: open market sales (code S).
• Reported prices and values: 3,257 shares at $112.95 ($367,878), 950 shares at $113.81 ($108,120), 8,393 shares at $115.05 ($965,615), 400 shares at $115.64 ($46,256).
• Footnotes on pricing: the filing says the reported prices represent weighted averages across multiple trades with price ranges of $112.53–$113.52 (F1), $113.54–$114.47 (F3), $114.59–$115.59 (F4), and $115.61–$115.71 (F5); the filer will provide per-price allocations on request.
• Ownership and structure: the reported securities are held directly by J&A Alliance Holdings Corporation as trustee of the J&A Alliance Trust; General Incorporated Association J&A Alliance, Kenji Sano, Tetsuya Numaguchi and Japan Post may be deemed to beneficially own the securities per footnote F2, with each disclaiming ownership except to the extent of pecuniary interest.
• Filing date and report period: Form 4 filed Oct 13, 2026, reporting transactions on Oct 8, 2026. The filing does not state whether it was filed late.

Why it may matter

• This was an open market sale by a 10% owner (a large holder, not an executive).
• These were market sales, not option exercises, awards, or gifts. A filing does not show why the insider traded or why the company acted.