[Taiya] Announcement by Important Subsidiary Jiya Semiconductor Co., Ltd. on Accumulated Losses Reaching Half of Paid-in Capital

1. Date of Event: June 25, 2026 2. Company Name: Jiya Semiconductor Co., Ltd. 3. Relationship with Company (please enter '本公司' or 'Subsidiary'): Subsidiary 4. Mutual Shareholding Ratio: Not applicable 5. Reason for Occurrence: As of December 31, 2025, Jiya Semiconductor's accumulated losses amounted to NT$1,406,109,673, which has reached half of its paid-in capital. 6. Response Measures: In accordance with Article 211 of the Company Act, this matter has been reported to the most recent shareholders' meeting. 7. Other Matters to be Disclosed (if the entity involved is a publicly issued company or above, this significant information also meets the criteria under Article 7, Paragraph 9, Item 9 of the Enforcement Rules of the Securities and Exchange Act regarding matters significantly affecting shareholders' rights or securities prices): None