Siliconware Precision Industries Announces Subsidiary United Test & Assembly Center's Board Resolution to Capitalize Retained Earnings for Capital Increase

1. Date of Board of Directors resolution: 2026/05/04 2. Source of capital increase: Capitalization of retained earnings 3. Whether to adopt an aggregate declaration for issuing new shares (Yes, please also specify the planned issuance period / No): No 4. Total issuance amount and shares for the entire plan (if for capitalization of retained earnings or capital reserve, the number of shares does not include those allocated to employees): NT$200,000,000 / 20,000,000 shares 5. For aggregate declaration cases, the amount and shares issued this time: Not applicable 6. For aggregate declaration cases, the remaining amount and shares after this issuance: Not applicable 7. Par value per share: NT$10 8. Issue price: Not applicable 9. Number of shares subscribed by employees or allocation amount: Not applicable 10. Number of publicly offered shares: Not applicable 11. Ratio of subscription by original shareholders or free allocation: Approximately 6.4516% 12. Handling of odd lots and shares not subscribed within the deadline: Not applicable 13. Rights and obligations of new shares issued this time: Same as original shares 14. Purpose of this capital increase: To strengthen the company's working capital 15. Other matters to be specified: None