Mitsubishi Pencil Co., Ltd. (Head Office: Shinagawa-ku, Tokyo; President: Shigehiko Kazuhara) announces the relocation of its Yamagata Plant as outlined below, due to reorganization of its production system. The primary production functions of the plant have already been transferred to other sites, and this relocation will have no impact on the company's overall production system. 1. Purpose of the Yamagata Plant Relocation The Mitsubishi Pencil Group has established its "Vision 2036 (Long-Term Vision)" aimed at the company's 150th anniversary in 2036, and is currently advancing its "Medium-Term Management Plan 2025–2027" to achieve this vision. As part of this initiative, and in line with the key strategy of "Continued Growth of Writing Instruments Business and Promotion of Diversification," the company is optimizing its global supply chain through production system reorganization. In this context, due to the aging infrastructure at the Yamagata Plant, the company has prioritized employee safety and steadily transferred most of the pencil manufacturing processes to other facilities to enhance production efficiency and strengthen the production system. Now, the management functions and the remaining manufacturing processes yet to be relocated will also be moved to the site of Yamagata Mitsubishi Pencil Seiko Co., Ltd. (a subsidiary of Mitsubishi Pencil Co., Ltd.) in Yamagata, with the aim of improving operational efficiency and strengthening collaboration within the group. Accordingly, this site will become the official location of Mitsubishi Pencil's Yamagata Plant. 2. Overview of the Relocation Name Mitsubishi Pencil Co., Ltd. Yamagata Plant Address 4026-1 Kamikomatsu, Kawanishi-cho, Higashitakase-gun, Yamagata Prefecture Relocation Date July 1, 2026 3. Expected Effects of the Yamagata Plant Relocation and Impact on Business Partners The relocation is expected to strengthen coordination within the production system and contribute to building a stable and efficient