On the Record · United Microelectronics
United Microelectronics acquisitions, on the record
The businesses United Microelectronics bought and sold, as its annual reports describe them, with the cash it reported paying for acquisitions each year and every deal filing since 2016.
Deals its annual reports describe
| Business | Deal | When | Value |
|---|---|---|---|
MIFS (renamed United Semiconductor Japan Corporation, USJC)Word for word“On June 29, 2018, our board approved the acquisition of the remaining 84.1% in MIFS from Fujitsu and the transaction was completed on October 1, 2019 at a consideration of JPY¥54.4 billion.” 20-F for 2023 | acquisition | October 1, 2019 | JPY¥54.4 billion |
SILICON INTEGRATED SYSTEMS CORP. (SIS)Word for word“5. Bargain purchase gain, which is derived from the acquisition of significant influence over SILICON INTEGRATED SYSTEMS CORP. (SIS).” 20-F for 2023 | acquisition | — | — |
Subsidiary (not named)Word for word“Disposal of subsidiary — — ( 196,009 ) ( 5,978 )” 20-F for 2024 | divestiture | — | 196,009 |
SiS Microelectronics CorporationWord for word“4.8 Merger Agreement, entered into as of February 26, 2004, between United Microelectronics Corporation and SiS Microelectronics Corporation (English Translation) (10)” 20-F for 2024 | merger | February 26, 2004 | — |
Infoshine Technology Limited and Best Elite International LimitedWord for word“4.11 Merger Agreement, entered into as of April 29, 2009, among United Microelectronics Corporation, Infoshine Technology Limited and Best Elite International Limited (13)” 20-F for 2024 | merger | April 29, 2009 | — |
PURIUMFIL INC.Word for word“Note: In August 2025, the Board of Directors of TERA ENERGY resolved to merge with PURIUMFIL INC., with TERA ENERGY as the surviving company.” 20-F for 2025 | merger | — | — |
Read from United Microelectronics’s annual reports (20-F for 2025, 20-F for 2024, 20-F for 2023) and the financial data it files with the SEC, as of 2026-04-30. Every quotation is word for word from the filing linked beside it; how these pages are built and checked. The full record is in its company data sheet.