[ATEN] Announcement of the Company's online investor conference to be held on May 19, 2026

Compliance with Article 4, Paragraph XX: 12 Date of occurrence: 2026/05/19 1. Date of the investor conference: 2026/05/19 2. Time of the investor conference: 14:00 3. Location of the investor conference: Online investor conference 4. Summary of the investor conference: To explain the company's operational and financial status for the first quarter of fiscal year 2026. 5. Other items to be specified: None For complete financial and business information, please refer to the Investor Conference Schedule or the Investor Conference section on the Market Observation Post System.