【ASE Technology Holding】Announcement on Behalf of Subsidiary Universal Scientific Industrial (USI) Co., Ltd. Regarding the Election of the Seventh Audit Committee

1. Date of Change: April 27, 2026 2. Name of Functional Committee: Audit Committee 3. Names of Former Members: Convener: CANG Yongtao Members: CANG Yongtao, HUANG Jiangdong, GUO Wei, CHEN Changyi, Yifan Li 4. Resumes of Former Members: CANG Yongtao: Professor of Accounting, School of International Finance and Trade, Shanghai International Studies University HUANG Jiangdong: Independent Director, Changjiang Pension Insurance Co., Ltd. GUO Wei: Associate Professor of Corporate Strategy and Management, China Europe International Business School CHEN Changyi: Chairman, Universal Scientific Industrial (USI) Co., Ltd. Yifan Li: Independent Director, Shanghai Jinqiao Export Processing Zone Development Co., Ltd. (term ends December 2025) 5. Names of New Members: Convener: CANG Yongtao Members: CANG Yongtao, Chang Dan Yao Danielle, GUO Wei, ZHANG Li, CHEN Changyi 6. Resumes of New Members: CANG Yongtao: Professor of Accounting, School of International Finance and Trade, Shanghai International Studies University Chang Dan Yao Danielle: Director (Representative), Universal Scientific Industrial (USI) Co., Ltd. GUO Wei: Associate Professor of Corporate Strategy and Management, China Europe International Business School ZHANG Li: Partner, Beijing Zhong Lun (Shanghai) Law Firm CHEN Changyi: Chairman, Universal Scientific Industrial (USI) Co., Ltd. 7. Type of Change (Please enter "Resignation", "Removal", "Term Expired", "Deceased", or "New Appointment"): Term Expired 8. Reason for Change: Term expired, re-election 9. Original Term (e.g., xx/xx/xx ~ xx/xx/xx): April 24, 2023 ~ April 23, 2026 10. Effective Date of New Appointment: April 27, 2026 11. Other Matters to be Stated: (1) Matters to be disclosed by Universal Scientific Industrial (USI) Co., Ltd. for this transaction in accordance with the regulations of the Shanghai Stock Exchange can be inquired on the Shanghai Stock Exchange website. (2) To ensure consistent information disclosure and protect the rights and interests of investors in Taiwan and Shanghai, the announcement date is coordinated with the posting time on the Shanghai Stock Exchange.