[KoJa] Subsidiaries Announce Accumulation of Same Securities Reaching 20% of Paid-in Capital Within a Year

1. Name of the security: Shanghai Stock Exchange 1-day treasury bond reverse repo GC001, code 204001 2. Trading date: 2026/05/15 - 2026/05/15 3. Date of board resolution: Not applicable 4. Other decision date: Decided by Chairman on May 15, 2026. 5. Trading volume, unit price, and total amount: Aprai: 83,780 units, avg. price: 1.155% Baihong: 107,020 units, avg. price: 1.015% Jiacai: 530,340 units, avg. price: 1.005% Jiahuang: 231,030 units, avg. price: 1.020% Jiaji: 118,620 units, avg. price: 1.005% Kede: 344,960 units, avg. price: 1.005% Jiajun: 303,830 units, avg. price: 1.015% Total amount: 171,958 thousand RMB (approx. 792,538 thousand TWD) 6. Gain/loss on disposal: Not applicable 7. Relationship with the underlying company: Non-related party 8. Current cumulative holdings (including this trade): Same units/prices as above. Pledge status: None. 9. Ratio of total investment to total assets and equity: Total assets: 15.93%, Equity: 22.18%. Working capital: 2,612,388 thousand TWD. 10. Purpose of acquisition: Financial investment 11-16: Not applicable / None.