UNITED MICROELECTRONICS CORP reports

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

UNITED MICROELECTRONICS CORP has filed 713 SEC EDGAR filings since 14 Feb 1997

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

SEC filing history

Showing 76-100 of 519 matching filings.

Per page

Current page

6-K File 001-15128

6-K

Filing date: 27 Oct 2025
Reporting date: 27 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 21 Oct 2025
Reporting date: 21 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 15 Oct 2025
Reporting date: 15 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 07 Oct 2025
Reporting date: 07 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 22 Sep 2025
Reporting date: 22 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 10 Sep 2025
Reporting date: 10 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 04 Sep 2025
Reporting date: 04 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 13 Aug 2025
Reporting date: 13 Aug 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 12 Aug 2025
Reporting date: 12 Aug 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 06 Aug 2025
Reporting date: 06 Aug 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 30 Jul 2025
Reporting date: 30 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 30 Jul 2025
Reporting date: 30 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 28 Jul 2025
Reporting date: 28 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 22 Jul 2025
Reporting date: 22 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 10 Jul 2025
Reporting date: 10 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 07 Jul 2025
Reporting date: 07 Jul 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 30 Jun 2025
Reporting date: 30 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 20 Jun 2025
Reporting date: 20 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 10 Jun 2025
Reporting date: 10 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 05 Jun 2025
Reporting date: 05 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 04 Jun 2025
Reporting date: 04 Jun 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

SD File 001-15128

FORM SD

Filing date: 29 May 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 28 May 2025
Reporting date: 28 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 15 May 2025
Reporting date: 15 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 08 May 2025
Reporting date: 08 May 2025
SEC evidence: Open document Open filing
Next action: Verify source filing