Notice of Change in President and CEO

We hereby announce that, effective May 1, 2026,
Jiro Gunji has stepped down as President and CEO and assumed the position of Chairman of the Board,
and Kohei Gunji has been appointed as President and CEO.

Message from the Outgoing President and CEO
I have stepped down as President and CEO and assumed the position of Chairman of the Board.
Since our founding in 1984, it has been my privilege to serve the Company for 42 years. I sincerely thank you for your continued support.

Kohei Gunji has been appointed as my successor. I would appreciate your continued support for the new leadership.

Sincerely,
May 2026
Step Science Co., Ltd.
Chairman
Jiro Gunji

Message from the Incoming President and CEO
I am honored to have been appointed as President and CEO, succeeding Jiro Gunji.

I am committed to the continued growth and success of the Company and will do my utmost to meet your expectations.
I look forward to your continued support.

Sincerely,
May 2026
Step Science Co., Ltd.
President and CEO
Kohei Gunji