The Kosei Securities Co.,Ltd.

This report discloses the business activities, management policies, business environment and major business events of The Kosei Securities Co., Ltd. (submitted on 2026-06-22; securities code: 8617), whose principal business is investment and financial services, reported as a single segment. It is based on the “Corporate Information” and “Business Conditions” sections of the Company’s annual securities report and other sources. Its principal business comprises financial instruments business activities centered on the sale and purchase, brokerage, underwriting, public offering and private placement of securities. The Company has 1 subsidiary, 株式会社亀山社中, which currently has no substantive business activities. Its head office is in Osaka City, and its offices comprise the head office, Tokyo Branch and several other locations, including the Kyoto Training Center. The Company operates as a single investment and financial services segment, providing customer services through departments including consulting, trading and systems. It has 37 employees, with an average age of 44, average length of service of 23 years and 7 months, and average annual salary of ¥7,990,000. Over the long term, it targets maintaining a net capital adequacy ratio of approximately 1,000% and is promoting the development of new face-to-face services using DX and the web. Its corporate history covers organisational expansion, regulatory compliance and market transitions from its founding in 1961 to the present. At present, no technology-specific names have emerged other than those related to research and development activities, specific supply-chain agreements and major IT platforms.