Regarding the Supreme Court Decision on the Antimonopoly Act Violation Case

On December 10, 2025, Dentsu Group Inc. (hereinafter “the Company”) received a decision made by the Supreme Court on the previous day dismissing the Company’s appeal in the Antimonopoly Act violation case in connection with the Tokyo 2020 Olympic and Paralympic Games^*.

On November 25, 2022, the Company was investigated by the Tokyo District Public Prosecutors Office and the Japan Fair Trade Commission regarding this matter. The Company has fully cooperated with the authorities' investigations and inquiries.

The Company has accepted that there was a violation of laws and regulations in connection to the planning and related operations for the test events, and it has implemented measures to prevent recurrence based upon serious reflection while striving to nurture an organizational culture that prioritizes integrity. However, the previous court ruling stated that the violation of laws and regulations extended beyond the planning and related operations for the test events. The ruling stated the violation also applied to the implementation and related operations of the test events, as well as the management and operation of the main event, which greatly differs from the Company's stance. The Company has repeatedly explained its perspective in judicial proceedings, seeking a fair judgment.

The Company takes this decision very seriously and will continue to prioritize integrity across our entire group, refining its corporate culture to enable every employee to thrive under high ethical standards.

The Company expects that the impact of this matter on its consolidated financial result forecast for the current fiscal year will be minimal.

#####

* News release “Dentsu Group Inc. Appeals Tokyo High Court Ruling”
https://www.group.dentsu.com/en/news/release/001522.html

Contact:
Group Corporate Communications Office
Dentsu Group Inc. Email:group-cc@dentsu.com