UNITED MICROELECTRONICS CORP reports

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

UNITED MICROELECTRONICS CORP has filed 723 SEC EDGAR filings since 14 Feb 1997

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SEC filing history

Showing 1-25 of 420 matching filings.

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6-K File 001-15128

6-K

Filing date: 30 Jul 2026
Reporting date: 30 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 29 Jul 2026
Reporting date: 29 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 29 Jul 2026
Reporting date: 29 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 21 Jul 2026
Reporting date: 21 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

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

6-K File 001-15128

6-K

Filing date: 14 Jul 2026
Reporting date: 14 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 06 Jul 2026
Reporting date: 06 Jul 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 29 Jun 2026
Reporting date: 29 Jun 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 23 Jun 2026
Reporting date: 23 Jun 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

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

6-K File 001-15128

6-K

Filing date: 18 Jun 2026
Reporting date: 18 Jun 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

Filing date: 16 Jun 2026
Reporting date: 16 Jun 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

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

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

6-K File 001-15128

6-K

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

6-K File 001-15128

6-K

Filing date: 30 Apr 2026
Reporting date: 30 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

6-K File 001-15128

6-K

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