Company facts
- Industry
- Semiconductors & Related Devices
- Headquarters
- Taipei
- Most recent report
- 6-K, filed Aug 14, 2026
- Filings on record
- 726 filings
- On EDGAR
- CIK 1033767
- Fiscal year ends
- December
- Filer status
- Large accelerated filer
Financials 8 of 600
- 6-K Report a foreign issuer made public elsewhere Aug 14, 2026
- 6-K Report a foreign issuer made public elsewhere Aug 6, 2026
- 6-K Report a foreign issuer made public elsewhere Aug 5, 2026
- 6-K Report a foreign issuer made public elsewhere Jul 30, 2026
- 6-K Report a foreign issuer made public elsewhere Jul 29, 2026
- 6-K Report a foreign issuer made public elsewhere Jul 29, 2026
- 6-K Report a foreign issuer made public elsewhere Jul 21, 2026
- 6-K Report a foreign issuer made public elsewhere Jul 15, 2026
Prospectuses and Registrations 7
- S-8 Registration statement for an employee plan Dec 26, 2024
- S-8 Registration statement for an employee plan Dec 28, 2022
- S-8 Registration statement for an employee plan May 10, 2007
- S-8 Registration statement for an employee plan Jul 26, 2005
- S-8 Registration statement for an employee plan Jan 21, 2003
- 424B5 Prospectus supplement for an offering Mar 15, 2002
- 424B5 Prospectus supplement for an offering Mar 14, 2002
Ownership 8 of 61
- 4 Insider reported a trade Jul 13, 2026
- 4 Insider reported a trade Jun 30, 2026
- 3 Insider reported their initial holding May 7, 2026
- 3 Insider reported their initial holding May 7, 2026
- 3 Insider reported their initial holding May 7, 2026
- 3 Insider reported their initial holding May 7, 2026
- 3 Insider reported their initial holding May 7, 2026
- 3 Insider reported their initial holding May 7, 2026
Other 8 of 58
- SD Conflict minerals disclosure May 29, 2026
- SD Conflict minerals disclosure May 29, 2025
- SD Conflict minerals disclosure May 31, 2024
- SD Conflict minerals disclosure May 31, 2023
- F-6 POS Aug 1, 2022
- SD Conflict minerals disclosure May 27, 2022
- 6-K/A Report a foreign issuer made public elsewhere, amended Jul 8, 2021
- SD Conflict minerals disclosure May 28, 2021
Everything here comes from United Microelectronics Corp's own filings on SEC EDGAR. The filing list is rechecked every hour.