[Richtek] Announcement of the company's invitation to participate in an investor conference organized by KGI Securities

In accordance with Article 4, Paragraph XX, Item 12: Date of occurrence of the event: 2026/05/06 1. Date of investor conference: 2026/05/06 2. Time of investor conference: 14:00 3. Venue of investor conference: KGI Securities Headquarters Building 12F Banquet Hall, 12F, No. 700, Mingshui Rd., Taipei City 4. Key message of investor conference: The company is invited to participate in the investor conference organized by KGI Securities to explain the company's operational status. 5. Other matters to be stated: 02:00PM~04:00PM For complete financial and business information, please refer to the investor conference schedule or investor conference section on the Market Observation Post System.