Notice Regarding Material Weaknesses of Internal Control Over Its Financial Reporting

In accordance with Article 24-4-4, Paragraph 1 of the Financial Instruments and Exchange Act, the internal control report for the fiscal year ended March 31,2026 was submitted to the Kanto Financial Agency today. This report states that there remain material weaknesses that require disclosure and that KDDI Group’s internal control over financial reporting is not effective. 1.Content of Material We