[Zyxel Holding] Announcement of Board Resolution on Cash Capital Increase by Key Subsidiary Zyxel Technology Corp.

1. Date of board resolution or company decision: 2026/06/30 2. Number of shares issued: 27,500,000 shares 3. Par value per share: NT$10 4. Total issuance amount: NT$275,000,000 5. Issuance price: NT$10 6. Number of shares for employee stock subscription: 10% of total issuance, i.e., 2,750,000 shares 7. Subscription ratio for existing shareholders: 90% of total issuance, i.e., 24,750,000 shares 8. Public offering method and number of shares: Not applicable 9. Handling of fractional shares and unclaimed shares: Not applicable 10. Rights and obligations of the newly issued shares: Same rights and obligations as previously issued shares 11. Purpose of capital increase funds: To strengthen operational capital 12. Subscription benchmark date for cash capital increase: 2026/07/05 13. Final share transfer suspension date: 2026/06/30 14. Start date of share transfer suspension: 2026/07/01 15. End date of share transfer suspension: 2026/07/05 16. Period for payment of share subscription: Payment date for existing shareholders and employees is July 6, 2026; payment date for designated investors is July 7, 2026 17. Contract signing date with financial institutions for collection and escrow: Not applicable 18. Institution entrusted with collection: Not applicable 19. Institution entrusted with fund escrow: Not applicable 20. Other matters to be disclosed: In accordance with the actual issuance status of the cash capital increase, if the content or related matters of this capital increase are amended by regulatory authorities, if there are any omissions, or if changes occur due to objective circumstances, the Chairman is authorized to handle all matters with full authority.