November 26, 2025
Mitsubishi Materials Corporation
Mitsubishi Materials Corporation ("MMC") has decided to transfer the insurance agency business operated by Ryoko Service Co., Ltd. ("Ryoko"), a wholly owned consolidated subsidiary of Mitsubishi Materials Trading Corporation ("Trading"), to MST Insurance Service Co., Ltd. ("MST").
Under the Medium-term Management Strategy starting in the fiscal year ending March 2027, we have set our basic policy as "Creating the future through resource circulation" and are aiming for sustainable business growth, shifting our management focus from quantity to quality and carrying out fundamental structural reforms to increase our profitability.
As part of these efforts, we have decided to transfer Ryoko's insurance agency business to MST, one of the largest companies in the industry.
Ryoko was established in 1975 as the in-house insurance agency of MMC and its domestic Group companies, by separating the insurance agency business from Trading. Since its establishment, it has contributed to the enhancement of employee welfare by offering various group insurance products.
MST is one of the largest comprehensive insurance agencies in Japan, having started its insurance agency business in 1947. It offers a variety of insurance products from many insurance companies in Japan and overseas, and provides high-quality consulting and solutions.
This transfer of the insurance agency business is expected to provide policyholders with more optimal insurance products. In addition, MMC aims to achieve sustainable business growth by promoting business selection and concentration through this business transfer, which is scheduled to take place on March 31, 2026.
MMC Group has established "For people, society and the earth, circulating resources for a sustainable future" as Our Commitment. We will continue to work to achieve Our Commitment through our resource circulation business.
| Name | Ryoko Service Co., Ltd. |
| Head Office | 3-21-1 Nihonbashi Hamacho, Chuo-ku, Tokyo |
| Name and Title of Representative | Yoshimaru Ikeda, President and Representative Director |
| Description of Business | Insurance business |
| Capital | ¥40 million |
| Date of Establishment | October 1, 1975 |
| Major Shareholders and Shareholding Ratio | Mitsubishi Material Trading Corporation 100% |
| Name | MST Insurance Service Co., Ltd. |
| Head Office | 1-6-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo |
| Name and Title of Representative | Teruyuki Sasaki, President and CEO |
| Description of Business | Non-life insurance agency business and life insurance solicitation business |
| Capital | ¥1.01 billion |
| Date of Establishment | October 1, 2006 |
| Relationship with MMC | No capital, personnel, or business relationship, and not a related party |
| Name | Mitsubishi Materials Trading Corporation |
| Head Office | 3-21-1 Nihonbashi Hamacho, Chuo-ku, Tokyo |
| Name and Title of Representative | Ryosaku Hashimoto, President |
| Business Description | Electronics, Mobility and Energy Equipment, Metals and Resource Circulation, Metalworking, Building Materials and Environment, Equipment and Consumer Products |
| Capital | ¥393 million |
| Date of Establishment | May 9, 1947 |
| Major Shareholders and Shareholding Ratio | Mitsubishi Materials Corporation 100% |
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