Winbond Announces Additional Purchase of Machinery and Equipment

Announcement Details

Winbond Electronics Corp. (2344) has announced the acquisition of machinery and equipment to be used for production operations.

### Transaction Details - Subject: Machinery and equipment for operational use. - Fact occurrence date: April 6, 2026, to May 21, 2026. - Cumulative total transaction amount: 2,299,176,714 TWD. - Counterparty: Applied Materials South East Asia pte. Ltd. - Relationship with the company: None. - Purpose: For production use.

### Authorization History The transaction was approved by the board of directors on October 27, 2025, February 10, 2026, and May 5, 2026. The decision was made in accordance with the company's "Procedures for Acquisition or Disposal of Assets."