Changes its subsidiary name to “Hirose SER Inc.”

Hirose Electric Co., Ltd. ("the Company") will change the corporate name of S.E.R. Corporation, which joined the Company's group on July 28, 2025, to Hirose SER Inc. ("Hirose SER") effective March 16, 2026. The Company will also relocate Hirose SER's head office from Kitashinagawa, Shinagawa-ku, Tokyo, to the Hirose Electric Gotanda Office located in Osaki, Shinagawa-ku, Tokyo. Furthermore, the Company's second-tier subsidiary in Iwate Prefecture, KUNOHE SEIMITSU Co., Ltd., a subsidiary of Hirose SER, will also change its corporate name to Morioka Hirose SER Inc.("Morioka Hirose SER") effective April 1. Its head office will be relocated from Kunohe Village, Kunohe District, Iwate Prefecture, to the current Kunohe Seimitsu Morioka Plant located in Mitake, Morioka City. The former head office location will continue to operate as the Kunohe Office.