UNITED MICROELECTRONICS CORP
Close on Oct 19, 2026
About United Microelectronics
Semiconductors & Related Devices, SIC 3674
United Microelectronics Corporation operates as a semiconductor foundry engaged in wafer fabrication and the provision of related semiconductor solutions. The company focuses primarily on its wafer manufacturing segment, complemented by other specialized product lines, delivering manufacturing services to technology clients and semiconductor design firms.
The company conducts operations across several international regions, maintaining subsidiaries, facilities, and business entities in Taiwan, China, Japan, Singapore, South Korea, the United States, and Europe. Its geographic footprint includes key operations in locations such as Suzhou, Xiamen, and Tainan.
Summary of the business section of United Microelectronics's latest annual report, written by StockData.
Company profile
Company
- Legal name
- UNITED MICROELECTRONICS CORP
- Founded
- 1980
- Headquarters
- Taipei, F5
- Address
- 8f, No.68, Sec. 1, Neihu Rd., 11493
- Phone
- 886-2-2658-9168
- Website
- www.umc.com
- Employees
- 19,097, Dec 31, 2025
- Industry
- Semiconductors & Related Devices
- Incorporated in
- F5
- Fiscal year ends
- December 31
- Auditor
- Ernst & Young, Taipei, Taiwan
Stock & identifiers
- Ticker
- UMC
- Exchange
- NYSE
- Shares outstanding
- 12.59B, Dec 31, 2025
- Filer category
- Large accelerated filer
- SEC CIK
- 1033767
- CUSIP
- 910873405
- ISIN
- US9108734057
- LEI
- 391200YJCAGH9LF96P73
- EIN
- 00-0000000
Executives and directors
Officers and directors who filed ownership reports (Forms 3, 4, 5) in the last two years
| Name | Position | Shares owned |
|---|---|---|
| Jason Shi Wang | Chief Executive Officer, Director | 32,655,440 |
| Ming-Chih Hsu | President & COO, Director | 8,403,220 |
| Chia-Tsung Hung | Chairman & CSO, Director | 64,511,327 |
| Jen-Tsung Lin | Vice President | 1,172,140 |
| Hung-Yu Yen | CHRO & VP | 339,682 |
| Chitung Liu | CFO & SVP | 3,789,757 |
| Che-Jen Hu | Vice President | 3,214,080 |
| Chia-Ao Lu | Vice President | 170,000 |
| Ying-Sheng Shen | Vice President | 1,313,080 |
| Oliver Chang | SVP | 4,819,289 |
| Ming-Tsung Chen | Vice President | 2,484,660 |
| Shu-Fen Hsu | Vice President | 1,567,080 |
| Wen Yi Tan | Vice President | 650,600 |
| Ming-Yu Lin | Vice President | 4,324,413 |
| Jin-Shuang Chen | CHRO & VP | 2,343,080 |
| Ching Yu Liao | General Counsel & VP | 732,480 |
| Chung-Hsien Wu | CISO & SVP | 3,685,888 |
| Yu-Chih Chuang | Vice President | 1,213,274 |
| Kuei-Chun Hung | SVP | 5,879,566 |
| Shih-Chieh Hsu | Vice President | 2,077,969 |
| Lin-Wu Kuo | Vice President | 913,080 |
| Shih-Wei Liu | Vice President | 2,183,080 |
| Shih-Fang Tzou | Vice President | 1,462,188 |
| Tzyy-Ming Cheng | Vice President | 2,868,080 |
| Su-Lin Wang | Director | 101,000 |
Employees
Headcount reported in annual reports
“As of December 31, 2025, we had 19,097 employees, which included 12,337 engineers, 5,924 technicians and 836 administrative staff performing administrative functions, on a consolidated basis, where a majority of the employees work from our Taiwan R.O.C.”