[Accton] (Supplement to 2025/03/13 announcement) On behalf of subsidiary Accton Investment Corp. - Announcement of disposal of securities

1. Name of the securities: Astera Labs, Inc. ("Astera") 2. Trading date: 2025/10/30 ~ 2026/05/15 3. Date of board of directors' approval: March 13, 2025 4. Other date of decision: Not applicable 5. Trading volume, unit price, and total monetary amount of the transaction: (1) Trading volume: 915,000 shares (2) Unit price: US$ 188.41 per share (3) Total transaction amount: US$ 172,421,000 6. Gain (or loss) from disposal (not applicable in case of acquisition of securities): Impact on retained earnings: US$ 172,421,000. (Does not affect profit or loss) 7. Relationship with the underlying company of the trade: Non-related party 8. Current cumulative volume, amount, and shareholding percentage of holdings of the security being traded (including the current trade) and condition of restriction on rights (e.g., pledges): Shares held after disposal is 0. 9. Ratio of total investment in securities (including the current trade) to the total assets and equity attributable to owners of the parent company on the most recent financial statements, and operating capital on the most recent financial statements: Ratio to total assets: 3.25% Ratio to owners' equity: 7.71% Amount of operating capital: NT$ 37,876,521,000 10. Concrete purpose of acquisition or disposal: Financial planning 11. Opinions of dissenting directors on the current transaction: None 12. Whether the current transaction is a related party transaction: No 13. Trading counterparty and its relationship with the Company: Not applicable 14. Date of approval by supervisors or the audit committee: March 13, 2025 15. Date of previous material message disclosure for the same event: March 13, 2025 16. Any other matters that need to be specified: Supplement to the actual figures of the announcement made on 2025/03/13