Giantplus: Announcement of Capital Loan to Subsidiary GIANTPLUS HOLDING L.L.C.

1. Date of occurrence of the event: 2026/05/11 2. Recipient of capital loan: (1) Company name: Kunshan Giantplus Optoelectronics Co., Ltd. (2) Relationship with the company providing the capital loan: Wholly-owned subsidiary directly held by GIANTPLUS HOLDING L.L.C. (3) Capital loan limit (NT$ thousands): 1,352,566 (4) Original outstanding capital loan (NT$ thousands): 744,010 (5) Amount of new capital loan (NT$ thousands): 189,960 (6) Is this a capital loan authorized by the board of directors for the chairman to disburse in installments or on a revolving basis to the same borrower: No (7) Outstanding capital loan as of the date of occurrence (NT$ thousands): 933,970 (8) Reason for this new capital loan: Working capital 3. Collateral provided by the recipient of the capital loan: (1) Content: None (2) Value (NT$ thousands): 0 4. Recipient of capital loan's most recent financial statements: (1) Capital (NT$ thousands): 916,660 (2) Accumulated profit/loss (NT$ thousands): -200,510 5. Interest calculation method: Fixed interest rate at CIROR one-year rate plus 1.6% on the day before disbursement. 6. Repayment: (1) Conditions: One-time repayment at maturity (2) Date: Within one year from the disbursement date 7. Outstanding capital loan as of the date of occurrence (NT$ thousands): 3,925,840 8. Ratio of outstanding capital loan to net worth of public company's most recent financial statements as of the date of occurrence: 48.76% 9. Source of company's capital loan to others: Subsidiary itself 10. Other matters that need to be specified: Exchange rate conversion 31.660