[TTY] Invitation to Investor Briefing hosted by KGI Securities

In accordance with Article 4, Section XX: 12 Date of occurrence: 115/05/22

1. Date of investor briefing: 115/05/22 2. Time of investor briefing: 14:30 3. Venue of investor briefing: KGI Securities Headquarters (12F, No. 700, Mingshui Rd., Taipei City) 4. Briefing summary: Invited to attend an investor briefing hosted by KGI Securities to explain the company's Q1 115 operational overview, financial and business-related information. 5. Other relevant information: None

Please refer to the Market Observation Post System (MOPS) for full financial and business information under the investor briefing section.