Providing New Value to the Shin-Yokohama Area: Seibu Real Estate and Macnica Collaborate to Promote Integrated Urban Development for Value Enhancement and Revitalization

Seibu Real Estate Co., Ltd. (Headquarters: Toshima-ku, Tokyo; President: Tomohide Saito) and Macnica, Inc. (Headquarters: Kohoku-ku, Yokohama; President: Kazumasa Hara) are pleased to announce that they have concluded a sales contract for the site of Shin-Yokohama Prince PePe, which is scheduled to cease operations in March 2027 (as previously announced by Seibu Real Estate on February 12, 2026). In the Shin-Yokohama area, which boasts high transportation convenience and significant regional potential, Seibu Real Estate—a real estate developer—and Macnica—a global company headquartered in the area known for implementing cutting-edge technology—will join forces. By integrating their strengths in cooperation with local government and community members, the two companies will work together to create new value for the Shin-Yokohama area as a future city, conducting experimental initiatives and technology implementations aimed at a future society. As part of this effort, the companies plan to develop a 'Community Promenade' between the Shin-Yokohama Prince Hotel, which is currently undergoing value-up considerations, and the new headquarters building that Macnica plans to construct. This space will be designed to allow everyone to move freely and interact. By combining the Seibu Group's expertise in real estate, hotel, and leisure businesses with the world-leading technologies handled by Macnica, the companies aim to revitalize the Shin-Yokohama area, create a vibrant atmosphere, and provide new value through events and spaces for interaction. Further details regarding future plans will be announced as they are determined. [Conceptual Image of the Community Promenade] *The image is a conceptual rendering at the planning stage (Macnica's new headquarters on the left, Shin-Yokohama Prince Hotel on the right).

[Location Map] [Conceptual Image]

*Shin-Yokohama Prince Hotel on the left, Macnica's new headquarters (planned) on the right.

(Related Release) February 12, 2026 [Seibu Real Estate Co., Ltd.]