[ELAN] Invitation to the '2026 TWSE Taiwan Excellent Index Performance Briefing' hosted by SinoPac Securities and TWSE

Compliance with Article 4, Clause XX: 12

Date of occurrence: 2026/05/20

1. Date of Investor Conference: 2026/05/20 2. Time of Investor Conference: 15:10 3. Location of Investor Conference: 101 Taiwan Stock Exchange, 1st Floor, Information Exhibition Center (No. 7, Section 5, Xinyi Road, Xinyi District, Taipei City, Taipei 101 Building) 4. Key information of the Investor Conference: The company is invited to participate in the 'SinoPac Securities/TWSE' 2026 TWSE Taiwan Excellent Index Performance Briefing, where it will explain the company's recent operational overview. 5. Other matters to be specified: None

For complete financial and business information, please check the 'Investor Conference' list or items on the Market Observation Post System.