Riso Kagaku launches share buyback of up to 660,000 shares for JPY 600 million

• Riso Kagaku set a share buyback of up to 660,000 common shares, capped at JPY 600 million.
• Authorization covers up to 1.05% of shares outstanding excluding treasury stock.
• Program runs Aug. 21 to Sept. 18, 2026, with purchases on the Tokyo Stock Exchange.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Riso Kagaku Corporation published the original content used to generate this news brief on July 31, 2026, and is solely responsible for the information contained therein.