[ASE Technology] Announcement of Participation in Morgan Stanley Asia AI Summit

Compliance with Article 4, Paragraph XX: 12. Date of occurrence: 2026/05/29. 1. Date of investor conference: 2026/05/29. 2. Time of investor conference: 10:30 AM. 3. Location: Mandarin Oriental, Taipei. 4. Summary of the conference: None. 5. Other matters: The presentation content is the same as the investor conference held on April 29, 2026. For complete financial and business information, please refer to the investor conference section on the Market Observation Post System.