Jia Chang Renews Endorsement Guarantee Facility with First Commercial Bank for Subsidiary Chia Corporation

1. Date of occurrence of the event: 2026/05/08 2. Guarantor/endorsed entity: (1) Company name: Chia Corporation (2) Relationship with the company providing endorsement guarantee: Parent-subsidiary (3) Endorsement guarantee limit (NT$ thousands): 4,544,936 (4) Original endorsement guarantee balance (NT$ thousands): 942,900 (5) Amount of new endorsement guarantee (NT$ thousands): 628,600 (6) Endorsement guarantee balance as of the date of occurrence (NT$ thousands): 1,571,500 (7) Actual amount utilized by the guaranteed company (NT$ thousands): 0 (8) Reason for the new endorsement guarantee: To meet working capital needs, the Company acts as the endorsement guarantor. 3. Collateral provided by the guaranteed company: (1) Content: None (2) Value (NT$ thousands): 0 4. Guaranteed company's latest financial statements: (1) Capital (NT$ thousands): 1,173,134 (2) Accumulated profit/loss (NT$ thousands): 6,347,504 5. Release of endorsement guarantee liability: (1) Conditions: Upon termination of the bank credit facility (2) Date: Upon termination of the bank credit facility 6. Total endorsement guarantee limit (NT$ thousands): 4,544,936 7. Endorsement guarantee balance as of the date of occurrence (NT$ thousands): 2,357,250 8. As of the date of occurrence, the ratio of endorsement guarantee balance provided by A to the net worth of the public offering company's latest financial statements: 25.93% 9. As of the date of occurrence, the sum of endorsement guarantee, long-term investments, and loans to others as a percentage of the net worth of the public offering company's latest financial statements: 115.62% 10. Other matters that need to be specified: Among the newly added endorsement guarantee amount, Chia Corporation and Jia Chang Company share a common facility of USD 20 million.