ChipMOS Announces By-Election of One Independent Director at 115th Annual Shareholders Meeting

1. Date of Change: 115/06/22 2. Category of Appointed or Changed Personnel (please enter Legal Person Director, Legal Person Supervisor, Independent Director, Natural Person Director, or Natural Person Supervisor): Independent Director 3. Former Position and Name: None 4. Former Personnel Resume: None 5. New Position and Name: Independent Director, Wang Chi-Liang 6. New Personnel Resume: Director/General Manager, Wang Chi-Liang, Huan-Fu Sustainable Systems Co., Ltd. 7. Nature of Change (please enter 'Resignation', 'Removal', 'End of Term', 'Deceased', or 'New Appointment'): New Appointment 8. Reason for Change: By-election 9. Number of Shares Held by New Appointee at Time of Election: 0 10. Original Term (e.g., xx/xx/xx ~ xx/xx/xx): 114/06/06 ~ 117/06/06 11. Effective Date of New Appointment: 115/06/22 12. Ratio of Director Changes During Same Term: 1/7 13. Ratio of Independent Director Changes During Same Term: 1/4 14. Ratio of Supervisor Changes During Same Term: Not Applicable 15. Whether More Than One-Third of Directors Have Changed (please enter Yes or No): No 16. Other Matters to be Disclosed (if the subject entity is a publicly issued company or above, this significant information also meets the criteria under Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act regarding matters significantly affecting shareholders' rights or securities prices): None Keyword: Significant Information