【Tongmao】Company Announcement per Article 22, Paragraph 1, Subparagraph 1 of the Regulations Governing Loaning of Funds and Endorsements/Guarantees by Public Companies

1. Date of occurrence of the event: 2026/05/07 2. Where the balance of funds loaned by a public company and its subsidiaries to others reaches 20% or more of the net worth of the public company's latest financial statements: (1) Name of the company receiving the loan: Hema Semiconductor (Sichuan) Co., Ltd. (2) Relationship with the company providing the loan: Wholly-owned subsidiary (3) Loan limit (in thousands of TWD): 187,143 (4) Loan balance as of the date of occurrence of the event (in thousands of TWD): 189,338 (5) Reason for the loan as of the date of occurrence of the event: Operational turnover 3. Loan balance as of the date of occurrence of the event (in thousands of TWD): 189,338 4. Ratio of loan balance to the net worth of the public company's latest financial statements as of the date of occurrence of the event: 40.47% 5. Source of funds loaned by the company to others: Parent company 6. Other matters that should be specified: Exchange rate conversion is calculated at 1 RMB = 4.618 TWD.