[Apacer] Announcement of Change in Venue Floor for the Corporate Briefing Meeting to be Held on July 24, 2026

Pursuant to Item XX of Article 4: 12 Factual Date: July 24, 2026

1. Date of the Corporate Briefing: July 24, 2026 2. Time of the Corporate Briefing: 2:30 PM 3. Venue of the Corporate Briefing: 36th-Floor Conference Room, Taiwan Stock Exchange (Taipei 101 Building, No. 7, Xinyi Road, Section 5, Xinyi District, Taipei City) 4. Summary of the Briefing: Presentation on the first-half 2026 operational performance and industry overview 5. Additional Notes: The venue has been changed from the original 1st-floor Information Display Center to the 36th-floor conference room.

For complete financial and business information, please visit the Public Information Observation Station and refer to the corporate briefing schedule or the investor presentation section.