Wistron Subsidiary Updates Land Lease and Construction Agreement in Malaysia with Increased Investment

Release Date: June 27, 2026 Statement Date: June 26, 2026 Statement Time: 16:05:31 Company Code: 3231 Company Name: Wistron Subject: [Update] Announcement on behalf of subsidiary Wistron Investment (Malaysia) Sdn. Bhd. (WIMY) regarding land lease and construction commissioning of real estate Applicable Clause: Clause 20 Event Date: June 26, 2026

Details: 1. Type of Contract: Land Lease and Construction Commission 2. Event Date: June 26, 2026 ~ June 26, 2026 3. Board Approval Date: June 26, 2026 4. Other Approval Dates: Not applicable 5. Counterparty and Relationship with the Company: Not yet determined 6. Main Contract Contents (including total contract value, expected investment amount, contract start and end dates, restrictions, and other important terms): The construction budget for WIMY is adjusted from approximately USD 28,308 million (not exceeding MYR 118,979 million) to approximately USD 32,415 million (not exceeding MYR 134,329 million). 7. Name of Professional Appraisal Firm or Company and Appraisal Result: Not applicable 8. Name of Real Estate Appraiser: Not applicable 9. License Number of Real Estate Appraiser: Not applicable 10. Specific Purpose of Acquisition: To meet business development and strategic planning needs 11. Dissenting Director Opinions on the Transaction: None 12. Is the Transaction a Related-Party Transaction: No 13. Date of Supervisor Approval or Audit Committee Consent: Not applicable 14. Is the Appraisal Report at a Restricted, Specific, or Special Price: No or Not applicable 15. Has an Appraisal Report Not Been Obtained: No or Not applicable 16. Reason for Not Obtaining Appraisal Report: Not applicable 17. Reasons for Significant Differences in Appraisal Results and Auditor's Opinion: Not applicable 18. Name of Accounting Firm: Not applicable 19. Name of Auditor: Not applicable 20. Auditor's License Number: Not applicable 21. Previous Material Information Disclosure Date on the Same Event: This is an update to the announcement made on November 11, 2025, regarding the land lease and construction commissioning of real estate by subsidiary Wistron Investment (Malaysia) Sdn. Bhd. (WIMY). 22. Other Remarks: None