[Far EasTone] Announcement of Far EasTone Telecommunications Co., Ltd.'s Operating Results for May 2026

1. Date of occurrence: 115/06/10 2. Company Name: Far EasTone Telecommunications Co., Ltd. 3. Relationship with the Company (Enter "Parent Company" or "Subsidiary"): Parent Company 4. Proportion of mutual shareholding: None 5. Reason for occurrence: Not applicable 6. Countermeasures: Not applicable 7. Other matters to be stated (If the subject of the event or resolution is a public offering or above company, this material information also meets the criteria of Article 7, Paragraph 9 of the Regulations Governing the Scope of Material Information Disclosure for Publicly Offered and Issuing Companies Affecting Shareholder Equity or Securities Prices): Far EasTone Telecommunications Co., Ltd. announced its self-assessed consolidated monthly revenue for May 2026 was NT$9.502 billion, profit before tax, interest, depreciation, and amortization (EBITDA) was NT$3.372 billion, operating income was NT$1.664 billion, and net profit attributable to owners of the parent was NT$1.327 billion, with earnings per share of NT$0.37. Cumulative consolidated revenue for the year up to May, based on self-assessment, was NT$46.846 billion, EBITDA was NT$16.742 billion, operating income was NT$8.148 billion, and net profit attributable to owners of the parent was NT$6.345 billion, with earnings per share of NT$1.76. Keywords: Material Information