Taiwan Mobile Announces Investor Briefing Session with Institutional Investors Overseas

Pursuant to Clause 4, Paragraph XX: 12 Date of Fact: 2026/07/13

1. Date of Investor Briefing: 2026/07/13 ~ 2026/07/14 2. Time of Investor Briefing: 1:30 PM 3. Location of Investor Briefing: Tokyo 4. Summary of Investor Briefing: Taiwan Mobile, at the invitation of JPMorgan Securities, will present its Q1 2026 earnings presentation and other publicly disclosed financial figures, operational performance, and related information to institutional investors at the aforementioned time and location. 5. Other Disclosures: None

For complete financial and business information, please refer to the Investor Briefing Schedule or the Earnings Call section on the Public Information Observation Station website.