Notice of Signing of Basic Agreement Concerning Acquisition of Shares of Unimicron Japan Co., Ltd.

Overview of Business and Transaction

This announcement reports the signing of a basic agreement to acquire all outstanding shares of Unimicron Japan Co., Ltd., owned by Unimicron of Taiwan, with the objective of making it a wholly owned subsidiary. Unimicron Japan is engaged in the manufacture and sale of printed circuit boards. Its undisclosed financial condition suggests asset movements over the most recent three fiscal years based on consolidated financial positions. Going forward, the company plans to simultaneously proceed with construction of a factory in Vietnam and expansion of domestic production capacity to enhance the group’s overall corporate value. The schedule for succession is for the share transfer agreement to be signed in December 2026 (planned) and the business succession to occur in April 2027 (planned).

Outlook and Impact

The impact of this transaction on consolidated earnings forecasts for the fiscal year ending March 2027 will be announced once details are finalized. At this time, the direct effect on financial results is unknown; however, strengthening domestic production capacity and pursuing strategic group reorganization are expected to enhance corporate value over the medium to long term.