Riken Technos to repurchase shares via ToSTNeT-3 system

Riken Technos Corporation will conduct an off-market treasury share repurchase on November 7, 2025, acquiring up to 1,300,000 common shares via the Tokyo Stock Exchange's ToSTNeT-3 system. The purchase will be executed at the closing price of 1,339 yen from November 6, 2025, with results to be announced after the 8:45 a.m. transaction concludes.

This acquisition method follows a broader resolution by the company's board of directors on October 31, 2025, to repurchase up to 1,500,000 common shares, with a maximum acquisition cost of 2,000,000,000 yen. This larger share repurchase program is scheduled to run from November 7, 2025, to January 31, 2026. As of November 6, 2025, no shares had been acquired under the broader program.