ASE Technology Holding Co., Ltd. Announces New Fund Loans to ASE Semiconductor Manufacturing Co., Ltd. and Other Two Companies Exceeding 2% of Company Net Worth

1. Date of occurrence of the event: 2026/05/12 2. Companies receiving fund loans: (1) Company name: ASE Semiconductor Manufacturing Co., Ltd. (2) Relationship with the company lending funds to others: ASE Semiconductor Manufacturing Co., Ltd. is a 100% owned subsidiary of the company. (3) Fund loan limit (in thousands of NTD): 140,246,957 (4) Original fund loan balance (in thousands of NTD): 0 (5) Amount of new fund loan (in thousands of NTD): 6,500,000 (6) Is this a fund loan authorized by the board of directors for the chairman to disburse in installments or for revolving use to the same borrower: No (7) Fund loan balance as of the date of occurrence of the event (in thousands of NTD): 6,500,000 (8) Reason for this new fund loan: Operational needs (1) Company name: Siliconware Precision Industries Co., Ltd. (2) Relationship with the company lending funds to others: Siliconware Precision Industries Co., Ltd. is a 100% owned subsidiary of the company. (3) Fund loan limit (in thousands of NTD): 140,246,957 (4) Original fund loan balance (in thousands of NTD): 0 (5) Amount of new fund loan (in thousands of NTD): 6,500,000 (6) Is this a fund loan authorized by the board of directors for the chairman to disburse in installments or for revolving use to the same borrower: No (7) Fund loan balance as of the date of occurrence of the event (in thousands of NTD): 6,500,000 (8) Reason for this new fund loan: Operational needs 3. Collateral provided by the companies receiving fund loans: (1) Content: None (2) Value (in thousands of NTD): 0 4. Latest financial statements of the companies receiving fund loans: (1) Capital (in thousands of NTD): 132,940,927 (2) Accumulated profit/loss amount (in thousands of NTD): 113,506,939 5. Interest calculation method: Fixed interest rate, calculated monthly. 6. Repayment: (1) Conditions: Repay in full at maturity or early repayment. (2) Date: Due one year from the actual disbursement date. 7. Fund loan balance as of the date of occurrence of the event (in thousands of NTD): 168,210,275 8. Ratio of fund loan balance to the net worth of the public company's latest financial statements as of the date of occurrence of the event: 47.98% 9. Source of the company's funds lent to others: Financial institutions. 10. Other matters that need to be specified: (1) Capital of the companies receiving fund loans from their latest financial statements: ASE Semiconductor Manufacturing Co., Ltd. NT$64,941,438 thousand, Siliconware Precision Industries Co., Ltd. NT$67,999,489 thousand. (2) Accumulated profit/loss amount of the companies receiving fund loans from their latest financial statements: ASE Semiconductor Manufacturing Co., Ltd. NT$61,318,395 thousand, Siliconware Precision Industries Co., Ltd. NT$52,188,544 thousand.