Okabe Co., Ltd.TSE: 5959

Notice of Changes in Executives

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Translation

Note: This document has been translated from the Japanese original for reference purposes only. In the event of any discrepancy between this translated document and the Japanese original, the original shall prevail.



For Immediate Release

Company name Okabe Co., Ltd.

December 1, 2025

Representative Hirohide Kawase,Representative Director,

President and Chief Executive Officer (Securities Code: 5959, TSE Prime Market)

Contact Hisanori Ekawa, Director, Operating Officer and Executive General Manager of Administrative Division

(TEL. +81-3-3624-5119)

Notice of Changes in Executives

Okabe Co., Ltd. announces that there will be changes in its Executives on January 1, 2026. Details are as follows.

Changes in Operating Officers not serving concurrently as Directors

Name

New titles, and major new responsibilities or concurrent positions

Current titles, and major current responsibilities or concurrent positions

Masakazu Yokoyama

Operating Officer

General Manager of

the Human Resources and Affairs Department

in the Administrative Division

General

Operating Officer

Executive General Manager of R&D Division

Takashi Yokoyama

Operating Officer

Executive General Manager of R&D Division

Operating Officer

Sales Division, General Manager of Civil Engineering Division

Daikan Kobayashi

Operating Officer

General Manager of

the General Affairs Department in the Administrative Division

Operating Officer

General Manager of

the Human Resources and General Affairs Department

in the Administrative Division

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