3596 ZyXEL Communications Corp.

Date of Announcement: July 7, 2026 Date of Statement: July 6, 2026 Time of Statement: 10:48:35 Company Code: 3596 Company Name: ZyXEL Communications Corp. Subject: Clarification of Media Report Applicable Clause: Clause 51 Factual Date: July 6, 2026

Details: 1. Factual Date: July 6, 2026 2. Company Name: ZyXEL Communications Corp. 3. Relationship with Company:本公司 (Our Company) 4. Cross-shareholding Ratio: Not applicable 5. Media Outlet: Economic Daily News, Page C1 6. Report Content: Analysts estimate that the company's 2026 revenue could reach NT$56.058 billion, with earnings per share challenging NT$14.61. 7. Reason for Occurrence: The report is based on speculation and estimates by media and analysts. The company has not provided any financial forecasts. Actual financial information will be disclosed on the Public Information Observation System in accordance with regulations. This statement is issued for clarification purposes. 8. Response Measures: None 9. Other Matters to be Disclosed: None