Sonix Technology Supplements Footnote Disclosures in 2025 Consolidated Financial Report English Version

1. Date of occurrence of the event: 2026/05/08 2. Company name: Sonix Technology Co., Ltd. 3. Relationship with the Company (please enter 'the Company' or 'subsidiaries'): The Company 4. Mutual shareholding ratio: Not applicable 5. Reason for the occurrence: Supplementation of footnote disclosures in the 2025 consolidated financial report English version regarding receivables from related parties reaching NT$100 million or 20% of paid-in capital. 6. Corrected information item/report name: Footnote disclosures / Receivables from related parties reaching NT$100 million or 20% of paid-in capital 7. Amount/content/page before correction: Footnote disclosures / Missing 8. Amount/content/page after correction: Footnote disclosures / Receivables from related parties reaching NT$100 million or 20% of paid-in capital (Appendix 4) in the 2025 English consolidated financial report / P56-P59 9. Countermeasures: Re-upload missing pages 10. Other matters that need to be specified: None