UNITED MICROELECTRONICS CORP
For the period ended Oct 28, 2026. Filed Oct 28, 2026.
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Oct 28, 2026 · Filed Oct 28, 2026
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Contents
EX-99.1 · General Description of Reporting Entity
General Description of Reporting Entity
a.
Principles of consolidation
The same principles of consolidation have been applied in the Company’s consolidated financial statements as those applied in the Company’s consolidated financial statements for the year ended December 31, 2025. For the principles of consolidation, please refer to Note 4(3) of the Company’s consolidated financial statements for the year ended December 31, 2025.
b.
The consolidated entities are as follows:
| Percentage of ownership (%)As of | |||||
|---|---|---|---|---|---|
| Investor | Subsidiary | Business nature | September 30,2026 | December 31,2025 | September 30,2025 |
| UMC | UMC GROUP (USA) | IC Sales | 100.00 | 100.00 | 100.00 |
| UMC | UNITED MICROELECTRONICS (EUROPE) B.V. | Marketing support activities | 100.00 | 100.00 | 100.00 |
| UMC | UMC CAPITAL CORP. | Investment holding | 100.00 | 100.00 | 100.00 |
| UMC | GREEN EARTH LIMITED (GE) | Investment holding | 100.00 | 100.00 | 100.00 |
| UMC | TLC CAPITAL CO., LTD. (TLC) | Venture capital | 100.00 | 100.00 | 100.00 |
| UMC | UMC INVESTMENT (SAMOA) LIMITED | Investment holding | 100.00 | 100.00 | 100.00 |
| UMC | FORTUNE VENTURE CAPITAL CORP. (FORTUNE) | Consulting and planning for venture capital | 100.00 | 100.00 | 100.00 |
| UMC | UMC KOREA CO., LTD. | Marketing support activities | 100.00 | 100.00 | 100.00 |
| UMC | OMNI GLOBAL LIMITED (OMNI) | Investment holding | 100.00 | 100.00 | 100.00 |
| UMC | SINO PARAGON LIMITED | Investment holding | 100.00 | 100.00 | 100.00 |
| UMC | BEST ELITE INTERNATIONAL LIMITED (BE) | Investment holding | 100.00 | 100.00 | 100.00 |
| UMC | UNITED SEMICONDUCTOR JAPAN CO., LTD. | Sales and manufacturing of integrated circuits | 100.00 | 100.00 | 100.00 |
| UMC and FORTUNE | WAVETEK MICROELECTRONICS CORPORATION (WAVETEK) | Sales and manufacturing of integrated circuits | 78.11 | 79.12 | 79.28 |
| TLC | SOARING CAPITAL CORP. | Investment holding | 100.00 | 100.00 | 100.00 |
| Percentage of ownership (%)As of | |||||
|---|---|---|---|---|---|
| Investor | Subsidiary | Business nature | September 30,2026 | December 31,2025 | September 30,2025 |
| SOARING CAPITAL CORP. | UNITRUTH ADVISOR (SHANGHAI) CO., LTD. | Investment holding and advisory | 100.00 | 100.00 | 100.00 |
| GE | UNITED MICROCHIP CORPORATION | Investment holding | 100.00 | 100.00 | 100.00 |
| FORTUNE | TERA ENERGY DEVELOPMENT CO., LTD. (TERA ENERGY) | Energy technical services | 95.37 | 92.64 | 92.64 |
| TERA ENERGY | EVERRICH ENERGY INVESTMENT (HK) LIMITED (EVERRICH-HK) | Investment holding | 100.00 | 100.00 | 100.00 |
| TERA ENERGY | MU-ONE ENERGY CO., LTD. | Sales of pollution control equipment | 100.00 | - | - |
| TERA ENERGY | MU-WELL ENERGY CO., LTD. | Energy technical services | 100.00 | - | - |
| TERA ENERGY | MU-SUN ENERGY CO., LTD. | Energy technical services | 100.00 | - | - |
| EVERRICH-HK | EVERRICH (JINING) NEW ENERGY TECHNOLOGY CO., LTD. (formerly EVERRICH (SHANDONG) ENERGY CO., LTD.) | Solar engineering integrated design services | 100.00 | 100.00 | 100.00 |
| OMNI | UNITED MICROTECHNOLOGY CORPORATION (CALIFORNIA) | Research and development | 100.00 | 100.00 | 100.00 |
| OMNI | ECP VITA PTE. LTD. | Insurance | 100.00 | 100.00 | 100.00 |
| WAVETEK | WAVETEK MICROELECTRONICS CORPORATION (USA) | Marketing service | 100.00 | 100.00 | 100.00 |
| BE | INFOSHINE TECHNOLOGY LIMITED (INFOSHINE) | Investment holding | 100.00 | 100.00 | 100.00 |
| INFOSHINE | OAKWOOD ASSOCIATES LIMITED (OAKWOOD) | Investment holding | 100.00 | 100.00 | 100.00 |
| OAKWOOD | HEJIAN TECHNOLOGY (SUZHOU) CO., LTD. (HEJIAN) | Sales and manufacturing of integrated circuits | 100.00 | 100.00 | 100.00 |
| UNITED MICROCHIP CORPORATION and HEJIAN | UNITED SEMICONDUCTOR (XIAMEN) CO., LTD. | Sales and manufacturing of integrated circuits | 100.00 | 100.00 | 100.00 |
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