Notice of Change in Chief Executive Officer

We are pleased to announce that, effective January 5, 2026, Motomasa Yotsukawa has stepped down as Chief Executive Officer and has assumed the position of Chairman of the Board, and that Susumu Yotsukawa has been appointed Chief Executive Officer of Yotsukawa Seisakusho Ltd.

Message from the Chairman of the Board

I would like to inform you that I have stepped down from my role as Chief Executive Officer and have assumed the position of Chairman of the Board.

During my tenure as Chief Executive Officer, I have been sincerely grateful for the generous support and trust extended to me over the years.

I am pleased to announce that Susumu Yotsukawa has succeeded me as Chief Executive Officer. I kindly ask for your continued support and confidence in him, as you have so warmly given to me.

January 2026

Motomasa Yotsukawa

Chairman of the Board

Yotsukawa Seisakusho Ltd.

Message from the Chief Executive Officer

I am honored to announce that I have been appointed Chief Executive Officer of Yotsukawa Seisakusho Ltd., succeeding Motomasa Yotsukawa.

While I am fully aware of the responsibilities this role entails, I am committed to dedicating my utmost efforts to the continued growth and development of the company. I sincerely ask for your continued guidance and support.

January 2026

Susumu Yotsukawa

Chief Executive Officer

Yotsukawa Seisakusho Ltd.