[Medias Holdings Co., Ltd.] Notice of Commencement of Joint Business in a Subsidiary

Medias Holdings Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President and Representative Director: Yasuhiko Ikeya; hereinafter "Medias HD") has announced that its subsidiary MJC Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo) will commence a business aimed at standardizing medical material master data in collaboration with Orba Healthcare Holdings Co., Ltd. (Headquarters: Okayama City, Okayama Prefecture), starting in July 2026.

1. Purpose of Commencing the Business Currently, equipment and materials used in medical settings are becoming increasingly sophisticated and diverse, leading to an enormous and complex volume of product information provided by manufacturers. On the other hand, the management systems introduced by the medical equipment wholesale industry and various medical institutions are individually optimized, requiring manual input of product information for each system. As a result, the entire medical industry faces not only unnecessary costs such as personnel expenses due to redundant input but also delays in information registration that hinder the overall supply chain. Furthermore, due to the recent decline in the labor force, securing personnel for data entry work has become extremely difficult, and this trend is expected to continue.

Based on the above, we have determined that consolidating and standardizing data management operations as infrastructure is essential for the sustainable development of the entire industry. Through this business, we will promote the standardization of master data, contributing to reducing the burden of clerical work in the medical industry and maintaining and improving a high-quality medical provision system. This business will be conducted jointly by Medias Solution Co., Ltd., which operates businesses related to medical material master data within our group, and Hosnet Japan Co., Ltd., a consolidated subsidiary of Orba Healthcare Holdings Co., Ltd. with a track record in the same field.

2. Overview of the Company Starting the Business (1) Name: MJC Co., Ltd. (2) Location: 1-2-2 Yurakucho, Chiyoda-ku, Tokyo (3) Title and Name of Representative: President and Representative Director Yuki Yamamoto (4) Business Description: Providing a common product database for medical materials, etc. (5) Capital: 30 million yen (6) Establishment: April 2025 (7) Number of Shares Issued: 3,000 shares (8) Fiscal Year End: June 30 (9) Major Shareholders and Ownership Ratio: Medias Holdings Co., Ltd. 66.7%, Orba Healthcare Holdings Co., Ltd. 33.3%

3. Overview of Partner Companies (1) Name: Medias Solution Co., Ltd. Location: Chiyoda-ku, Tokyo Business: SPD business and creation/maintenance of medical material master data. (2) Name: Orba Healthcare Holdings Co., Ltd. Location: Okayama City, Okayama Prefecture Business: Medical equipment sales business. (3) Name: Hosnet Japan Co., Ltd. Location: Okayama City, Okayama Prefecture Business: SPD business and creation/maintenance of medical material master data. *SPD Business: A business that centrally manages medical materials from inventory management to on-site supply in medical institutions, supporting reduction of hospital logistics burdens and improving operational efficiency.

4. Future Outlook We expect the impact on our consolidated performance to be minor. If any matters arise that should be disclosed in the future, we will disclose them promptly.