Securities Report – 81st Fiscal Period (April 1, 2025 – March 31, 2026)

Kissei Pharmaceutical Co., Ltd. Securities Report – 81st Fiscal Period (April 1, 2025 – March 31, 2026)

In accordance with the Financial Instruments and Exchange Act, Kissei Pharmaceutical Co., Ltd. hereby submits and discloses its securities report for the 81st fiscal period, covering April 1, 2025 to March 31, 2026.

This report includes the company's business performance, financial position, management policies, future outlook, risk factors, accounting policies, and significant changes in accounting estimates during the period.

We kindly request investors and stakeholders to utilize this document as a resource to deepen their understanding of our corporate operations.

The full report is available for viewing and download on the "Investor Relations" section of the company's official website, as well as on EDINET (Electronic Disclosure for Investors' NETwork), operated by the Financial Services Agency of Japan.

Going forward, we remain committed to enhancing transparency and expanding our investor disclosure practices.