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UNITED MICROELECTRONICS CORP — 6-K Filings

543 6-K filings on record

This page lists all 6-K filings submitted to the SEC by UNITED MICROELECTRONICS CORP (UMC), sorted by most recent first. Each row links to the full filing on EdgarLookup. UNITED MICROELECTRONICS CORP has filed 543 6-K documents with the SEC since 1997. To view all SEC filings by UNITED MICROELECTRONICS CORP, see the full filings list.

Overview All Filings Financials Insiders
All 20-F 20-F/A 3 424B5 6-K 6-K/A CORRESP EFFECT F-3/A F-6 F-6 POS F-6EF S-8 SC 13D SC 13D/A SC 13G SC 13G/A SD UPLOAD
Form Description Accession Number Filed Period
6-K 6-K 0001193125-26-124974 Mar 26, 2026
6-K 6-K 0001193125-26-103006 Mar 12, 2026
6-K 6-K 0001193125-26-092413 Mar 5, 2026
6-K 6-K 0001193125-26-068366 Feb 25, 2026
6-K 6-K 0001193125-26-068351 Feb 25, 2026
6-K 6-K 0001193125-26-065068 Feb 24, 2026
6-K 6-K 0001193125-26-049677 Feb 13, 2026
6-K 6-K 0001193125-26-038388 Feb 5, 2026
6-K 6-K 0001193125-26-025557 Jan 28, 2026
6-K 6-K 0001193125-26-012225 Jan 14, 2026
6-K 6-K 0001193125-26-005368 Jan 7, 2026
6-K 6-K 0001193125-25-335826 Dec 30, 2025
6-K 6-K 0001193125-25-321620 Dec 17, 2025
6-K 6-K 0001193125-25-313406 Dec 10, 2025
6-K 6-K 0001193125-25-307415 Dec 4, 2025
6-K 6-K 0001193125-25-301178 Nov 28, 2025
6-K 6-K 0001193125-25-288768 Nov 20, 2025
6-K 6-K 0001193125-25-275805 Nov 12, 2025
6-K 6-K 0001193125-25-267954 Nov 6, 2025
6-K 6-K 0001193125-25-254520 Oct 29, 2025
6-K 6-K 0001193125-25-254523 Oct 29, 2025
6-K 6-K 0001193125-25-252138 Oct 28, 2025
6-K 6-K 0001193125-25-250653 Oct 27, 2025
6-K 6-K 0001193125-25-244241 Oct 21, 2025
6-K 6-K 0001193125-25-239494 Oct 15, 2025
6-K 6-K 0001193125-25-232535 Oct 7, 2025
6-K 6-K 0001193125-25-209921 Sep 22, 2025
6-K 6-K 0001033767-25-000006 Sep 10, 2025
6-K 6-K 0001033767-25-000004 Sep 4, 2025
6-K 6-K 0000950170-25-107596 Aug 13, 2025
6-K 6-K 0000950170-25-106904 Aug 12, 2025
6-K 6-K 0000950170-25-103509 Aug 6, 2025
6-K 6-K 0000950170-25-099867 Jul 30, 2025
6-K 6-K 0000950170-25-099865 Jul 30, 2025
6-K 6-K 0000950170-25-098932 Jul 28, 2025
6-K 6-K 0000950170-25-097409 Jul 22, 2025
6-K 6-K 0000950170-25-094919 Jul 10, 2025
6-K 6-K 0000950170-25-094136 Jul 7, 2025
6-K 6-K 0000950170-25-091201 Jun 30, 2025
6-K 6-K 0000950170-25-088159 Jun 20, 2025
6-K 6-K 0000950170-25-084096 Jun 10, 2025
6-K 6-K 0000950170-25-081991 Jun 5, 2025
6-K 6-K 0000950170-25-081382 Jun 4, 2025
6-K 6-K 0000950170-25-078072 May 28, 2025
6-K 6-K 0000950170-25-071943 May 15, 2025
6-K 6-K 0000950170-25-066333 May 8, 2025
6-K 6-K 0000950170-25-057653 Apr 24, 2025
6-K 6-K 0000950170-25-056948 Apr 23, 2025
6-K 6-K 0000950170-25-056951 Apr 23, 2025
6-K 6-K 0000950170-25-052667 Apr 10, 2025