[Unizyx] Announcement on Behalf of Subsidiary Zyxel Communications Corp. Regarding Capital Injection into Zyxel Iletisim Teknolojileri A.S.

1. Name and nature of the subject matter: Equity of Zyxel Iletisim Teknolojileri A.S. 2. Date of occurrence: 2026/5/18~2026/5/18 3. Board of Directors approval date: May 18, 2026 4. Other approval dates: N/A 5. Transaction quantity, unit price, and total amount: No increase in shares held from this capital increase. Total amount: Approximately NT$315,000 thousand. 6. Counterparty and its relationship with the company: A subsidiary held by Zyxel Communications. 7. If the counterparty is a related party: Counterparty: Zyxel Iletisim Teknolojileri A.S. Relationship: A substantive related party (a 100% directly owned subsidiary of Zyxel Communications). 8. If the subject matter was owned by a related party in the last five years: N/A. 9. Matters concerning the disposal of receivables: N/A. 10. Gain (or loss) on disposal: N/A. 11. Payment terms, contract restrictions, and other important agreements: Capital injection expected to be completed in June 2026. 12. Decision-making process, price reference, and decision-making unit: Approved by the company's Board of Directors. 13. Net worth per share of the target company: N/A. 14. Cumulative holding of the security (including this transaction): Quantity: 5 shares. Amount: Approx. NT$712,929 thousand. Holding ratio: 100%. Rights restrictions: None. 15. Percentage of securities investment to total assets and equity attributable to owners of the parent in the latest financial statements, and working capital: Ratio to total assets: 5.16%. Ratio to equity: 6.04%. Working capital: NT$2,294,302 thousand. 16. Broker and brokerage fees: N/A. 17. Specific purpose of the acquisition or disposal: Long-term investment. 18. Opinions of dissenting directors: None. 19. This is a related party transaction: Yes. 20. Approval date by supervisors or audit committee: N/A. 21. CPA's unreasonable opinion: N/A. 22. Name of CPA firm: N/A. 23. Name of CPA: N/A. 24. CPA license number: N/A. 25. Involves change in business model: No. 26. Explanation of business model change: N/A. 27. Transactions with the counterparty in the past year and expected in the next year: N/A. 28. Source of funds: Own funds. 29. Date of previous material information announcement on the same event: N/A. 30. Other matters to be specified: None.