ASE Technology Holding: Announcement by its subsidiary Universal Scientific Industrial (USI) Corp. of the Board of Directors' resolution to issue new shares for capital increase

1. Date of the board of directors' resolution: 2026/05/07 2. Source of capital increase: Distributable earnings for the year 2025 3. Whether to issue new shares under comprehensive shelf registration (if yes, please specify the planned issuance period/no): No 4. Total amount and number of shares to be issued in this case (if it is a capital increase from earnings or capital reserve, the number of shares does not include those allocated to employees): Total issuance amount NT$4,217,881,770, total issuance shares 421,788,177 shares 5. For cases of issuing new shares under comprehensive shelf registration, the amount and number of shares issued this time: Not applicable 6. For cases of issuing new shares under comprehensive shelf registration, the remaining amount and number of shares after this issuance: Not applicable 7. Par value per share: NT$10 8. Issue price: NT$10 9. Number of shares subscribed by employees or amount allocated: None 10. Number of shares for public sale: Not applicable 11. Proportion of subscription or free allocation to original shareholders: 91.58995 shares per thousand shares 12. Treatment of odd-lot shares and unsubscribed shares after the deadline: Odd-lot shares less than one share will be rounded up to a whole share. 13. Rights and obligations of the new shares issued this time: Same as existing issued shares 14. Purpose of this capital increase: To replenish working capital. 15. Other matters to be specified: None