Announcement of Board Resolution to Convene 2026 Annual General Meeting by Subsidiary Universal Scientific Industrial (France)

Release Date: June 26, 2026 Filing Date: June 25, 2026 Filing Time: 14:28:32 Company Code: 3711 Company Name: ASE Holding

Subject: Announcement on behalf of subsidiary Universal Scientific Industrial (France) regarding the board resolution to convene the 2026 Annual General Meeting.

Applicable Clause: Item 17 Event Date: June 25, 2026

Details: 1. Board Resolution Date: June 25, 2026 2. Shareholders' Meeting Date: June 30, 2026 3. Meeting Venue: 95, rue La Boetie, 75008 Paris, France 4. Agenda Item 1 – Reporting Matters: "Chairman's Management Report and Auditor's Review for Fiscal Year 2025" 5. Agenda Item 2 – Approval Matters: "2025 Annual Financial Statements" 6. Agenda Item 3 – Discussion Matters: (1) Proposal on the distribution of profits for fiscal year 2025 (2) Confirmation that the company has not entered into any agreements governed by Article L.227-10 of the French Commercial Code (3) Proposal to change the auditing firm and signing certified public accountant (4) Authorization to complete all necessary legal procedures related to the above proposals 7. Agenda Item 4 – Election Matters: None 8. Agenda Item 5 – Other Proposals: None 9. Agenda Item 6 – Adjourned Motions: None 10. Share Transfer Suspension Start Date: Not Applicable (NA) 11. Share Transfer Suspension End Date: Not Applicable (NA) 12. Other Matters to be Disclosed: None