Riken Technos completes treasury share acquisition via ToSTNeT-3

Riken Technos Corporation completed an acquisition of 90,000 shares of its common stock on November 21, 2025, through the Tokyo Stock Exchange's ToSTNeT-3 system. The total cost for this transaction was JPY 122,310,000. This acquisition aims to enhance capital efficiency and improve shareholder returns by executing a flexible capital policy in response to changes in the business environment.

This repurchase forms part of a larger resolution approved on October 31, 2025, which authorized the acquisition of up to 1,500,000 shares of common stock, with a maximum total acquisition cost of JPY 2,000,000,000. The acquisition period for this program extends from November 7, 2025, to January 31, 2026.

As of November 21, 2025, Riken Technos has acquired a cumulative total of 1,390,000 shares, amounting to JPY 1,863,010,000 under the ongoing repurchase program.