Masatoshi Koide, President and Representative Director of Aflac Life Insurance Japan (ALIJ) and an officer of Aflac Incorporated (NYSE:AFL), filed a Form 4 on September 18, 2026, disclosing transactions in Aflac common stock dated September 16, 2026.

Key Highlights

  • Option exercise: Koide exercised an employee stock option (right to buy) for 3,201 shares of common stock at an exercise price of $35.52 per share on September 16, 2026.
  • First sale: 3,201 shares were sold at $117.93 per share on September 16, 2026.
  • Second sale: 10,000 shares were sold at a weighted average price of $118.04 per share, with individual transactions ranging from $118.03 to $118.09.
  • Remaining ownership: Following all reported transactions, Koide directly owned 76,422 shares of common stock.
  • Option extinguished: The exercised employee stock option, which had an expiration date of February 14, 2027, now shows zero derivative securities beneficially owned following the transaction.
  • Role: The filing identifies Koide as "Pres. and Rep. Director, ALIJ," an officer of the issuer.

Koide's September 2026 Transactions in Aflac Common Stock

According to the Form 4 filed with the SEC on September 18, 2026, Masatoshi Koide executed three transactions in Aflac Incorporated (NYSE:AFL) common stock on September 16, 2026. First, he exercised an employee stock option covering 3,201 shares at the exercise price of $35.52 per share (transaction code M), bringing his directly held shares to 89,623 following that acquisition.

Koide then disposed of shares in two separate sale transactions (transaction code S). The first sale covered 3,201 shares at $117.93 per share, reducing his direct holdings to 86,422 shares. The second sale involved 10,000 shares at a weighted average price of $118.04 per share. The filing noted that these 10,000 shares were sold in multiple transactions at prices ranging from $118.03 to $118.09, and that full detail on each separate price is available upon request to the issuer, any security holder, or SEC staff. After both sales, Koide's directly held common stock position stood at 76,422 shares, as reported in the filing.

The exercised option had an original exercise date of February 14, 2020, and was set to expire February 14, 2027, with an exercise price of $35.52. The filing recorded its price as $0 at the time of exercise and indicated that zero derivative securities of this type remain beneficially owned by Koide following the reported transaction. All ownership is recorded as direct. The form was signed by Brooke R. Phillips on behalf of Masatoshi Koide and dated September 18, 2026.

What Was Disclosed

The filing disclosed the exercise of a stock option for 3,201 shares and the subsequent sale of 13,201 total shares of Aflac common stock by officer Masatoshi Koide on September 16, 2026, leaving him with a direct beneficial ownership of 76,422 shares.