<p>United Microelectronics Corporation (UMC) has announced its participation in the capital increase of its associate company, Unimicron Technology Corp. UMC will subscribe to new common shares issued by Unimicron, with a trading volume not exceeding 6,034,482 shares at a unit price of NTD 116 per share, amounting to a maximum investment of NTD 700 million. The subscription will be based on UMC’s existing shareholding ratio, and the company may acquire additional shares up to NTD 179.66 million if other shareholders or employees waive their subscription rights. Following the transaction, UMC’s cumulative holdings in Unimicron will total 204,912,528 shares, representing a 13.01% stake. The purpose of the acquisition is for strategic investment. Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. UMC - United Microelectronics Corporation published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001193125-25-321620), on December 17, 2025, and is solely responsible for the information contained therein. © Copyright 2025 - Public Technologies (PUBT) Original Document: here</p>

<p>UMC plans to invest up to NTD 700 million in Unimicron by subscribing to new shares, increasing its stake to 13.01%. The investment is strategic, with potential additional shares if others waive rights. This AI-generated news is informational, not financial advice.</p>

UMC Invests Up to NTD 700 Million in Unimicron Share Subscription