[UIS] Announcement Regarding the Company's Investor Conference

In compliance with Article 4, Paragraph 12 of the regulations. Date of occurrence: 2026/06/11. 1. Date of investor conference: 2026/06/11. 2. Time: 14:30. 3. Location: Conference Room, Top Floor, Taiwan Technology Plaza (R Floor, No. 11-29, Qiaohe Rd., Zhonghe Dist., New Taipei City). 4. Summary of the conference: Presentation of company financial and operational information. 5. Other matters: Relevant information will be disclosed on the Market Observation Post System in accordance with regulations. Please refer to the investor conference schedule or the specific conference section on the Market Observation Post System for complete financial and operational details.