UNITED MICROELECTRONICS CORP reports

Company location: Taipei, Taiwan
Fiscal year end: 31 December

UNITED MICROELECTRONICS CORP has filed 709 SEC EDGAR filings since 14 Feb 1997

Filter by type:
SC13D
SC13G
20-F
6-K

SEC filing history

Showing 1-25 of 515 matching filings.

Per page

25

Current page

1

6-K File 001-15128

6-K

Filing date: 05 Jun 2026
Reporting date: 05 Jun 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 03 Jun 2026
Reporting date: 03 Jun 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

SD File 001-15128

SD

Filing date: 29 May 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 27 May 2026
Reporting date: 27 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 22 May 2026
Reporting date: 22 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 20 May 2026
Reporting date: 20 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 15 May 2026
Reporting date: 15 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 13 May 2026
Reporting date: 13 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 12 May 2026
Reporting date: 12 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 11 May 2026
Reporting date: 11 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 08 May 2026
Reporting date: 08 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 01 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 01 May 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

3

Filing date: 07 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .