[Altek] Announcement on the completion of capital change registration for the cancellation of restricted employee shares

1. Date of approval by the competent authority: 2026/05/27. 2. Date of completion of capital change registration: 2026/05/27. 3. Impact on financial reports: (1) The company's original paid-in capital was NT$3,077,170,250. After the reduction of NT$150,000 for the cancellation of restricted employee shares, the paid-in capital is NT$3,077,020,250. (2) The original number of outstanding shares was 307,617,025. After the cancellation of 15,000 shares, the number of outstanding shares is 307,602,025. (3) The net asset value per share was NT$32.51, and after the capital reduction, it is NT$32.52 (based on Q1 2026 financial statements). 4. Expected share exchange plan: Not applicable. 5. Expected listed shares after reduction: Not applicable. 6. Ratio of listed shares after reduction: Not applicable. 7. Measures for low liquidity: Not applicable. 8. Other: The company received the approval letter from the Hsinchu Science Park Administration on 2026/05/29.