Notice of Changes in Officers and Organizational Restructuring

Regarding Changes in Officers

Sumitomo Osaka Cement Co., Ltd. resolved at the Board of Directors meeting on February 27, 2026, the appointments and resignations of directors and auditors at the regular shareholders meeting scheduled for late June 2026. Chairman of the Board, Mr. Fukuichi Sekine, will resign effective March 31, 2026, and is scheduled to assume the position of Advisor to the Board. Additionally, several candidates for newly appointed directors and auditors have been proposed. Promotions and resignations among executive officers were also announced simultaneously, indicating efforts toward rejuvenating the organization and strengthening the governance structure.

Overview of Organizational Restructuring

Effective April 1, 2026, based on the medium-to-long-term vision 'SOC Vision2035,' organizational restructuring will be implemented to promote transformation of the business portfolio. Specifically, the Cement Division Headquarters will be established to oversee the Cement Management Department, Production Technology Department, Facilities Department, Cement Sales Department, and Logistics Department. The High Performance Products Division Headquarters will also be established, overseeing the High Performance Products Department—formed by integrating the Optoelectronics Department and New Materials Department—and the High Performance Products Research Institute. Furthermore, an Engineering Department responsible for company-wide engineering has been newly established. This aims to improve efficiency and strengthen business operations.