Riso Kagaku completes stock buyback program ahead of schedule

Riso Kagaku Corporation announced the successful completion of its treasury stock repurchase program, with purchases made between December 1 and December 12, 2025. The company acquired 228,800 shares of its common stock at a total cost of JPY 286,447,600 through purchases on the Tokyo Stock Exchange. This concludes the program authorized by the board's resolution on November 5, 2025.

The completed repurchase falls within the framework of the board's resolution, which initially aimed to acquire up to 470,000 shares, representing 0.74% of issued shares (excluding treasury stock), at a maximum cost of JPY 500,000,000. The original purchase period was set from November 19 to December 23, 2025.

Cumulatively, as of December 12, 2025, Riso Kagaku has purchased 403,800 shares for a total of JPY 499,892,600, effectively utilizing nearly all of the allocated funds and completing the program earlier than the initially planned end date.