【ECS】Correction to Board Resolution on Dividend Distribution

1. Date of board resolution: 2026/03/11 2. Dividend period: Fiscal year 2025 3. Dividend distribution period: From 2025/01/01 to 2025/12/31 4. Shareholder distribution details: (1) Cash dividend from retained earnings (NTD/share): 2.15000000 (2) Cash distribution from legal reserve (NTD/share): 0 (3) Cash distribution from capital surplus (NTD/share): 0.55000000 (4) Total cash distributed to shareholders (NTD): 712,205,073 (5) Stock dividend from retained earnings for capital increase (NTD/share): 0 (6) Stock dividend from legal reserve for capital increase (NTD/share): 0 (7) Stock dividend from capital surplus for capital increase (NTD/share): 0 (8) Total number of shares distributed to shareholders (shares): 0 5. Other matters to be specified: The company's proposal for cash distribution from 2025 retained earnings and capital surplus was revised by a board resolution on 2026/05/08. 6. Par value per common share: NTD 10.0000.