The following information was originally prepared and published by DeNA Co., Ltd. in Japanese as it contains timely disclosure materials to be submitted to the Tokyo Stock Exchange. This English translation is for your convenience only. To the extent there is any discrepancy between this English translation and the original Japanese version, please refer to the Japanese version.

DeNA

TASF

MEMBERSHIP

June 29, 2026

Company name: DeNA Co., Ltd.
(TSE Prime Stock Code: 2432)
Name of representative: Tomoko Namba, President & CEO
Contact person: Keigo Watanabe, Director, Executive Officer, Head of the Corporate Unit
Tel.: 03-6758-7200

Notice Regarding Organization and Personnel

DeNA Co., Ltd. would like to announce that in a board of directors meeting held today, it passed a resolution regarding the management structure and organization for July 1, 2026 onward, with the objective of further promoting its strategy, and strengthening and enhancing its business execution structure in each business unit. The details are included on the following page.

(Reference)

1. Management Structure

(1) Directors (as of July 1, 2026)

1. Organizational Chart (as of July 1, 2026)

Asterisks (*) indicate newly established departments.

The structure for corporate governance and more details, including concerning the board of directors and management meeting, etc., are disclosed in the Corporate Governance Report.

For inquiries please contact:

IR Department ([email protected])

DeNA Co., Ltd. (https://dena.com)