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United Microelectronics (NEW) SEC Filings

NYSE: UMCTechnologySemiconductorsUSD

22.96+0.14 (+0.61%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

United Microelectronics (NEW) filing overview

This page lists 60 recent SEC filings by United Microelectronics (NEW) (UMC), including 52 6-K, 5 4, 1 6-K/A, 1 20-F. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.

Summary generated from market data by MetaCap's automated system. Methodology

UMC SEC filings

United Microelectronics (NEW) SEC filings
FiledFormDescriptionDocument
Oct 6, 20266-KReport of foreign private issuerView on EDGAR
Oct 5, 20266-KReport of foreign private issuerView on EDGAR
Oct 5, 20266-K/AReport of foreign private issuer (amendment)View on EDGAR
Sep 29, 20266-KReport of foreign private issuerView on EDGAR
Sep 22, 20264Statement of changes in beneficial ownershipView on EDGAR
Sep 17, 20264Statement of changes in beneficial ownershipView on EDGAR
Sep 8, 20264Statement of changes in beneficial ownershipView on EDGAR
Sep 4, 20266-KReport of foreign private issuerView on EDGAR
Sep 2, 20266-KReport of foreign private issuerView on EDGAR
Aug 26, 20266-KReport of foreign private issuerView on EDGAR
Aug 14, 20266-KReport of foreign private issuerView on EDGAR
Aug 6, 20266-KReport of foreign private issuerView on EDGAR
Aug 5, 20266-KReport of foreign private issuerView on EDGAR
Jul 30, 20266-KReport of foreign private issuerView on EDGAR
Jul 29, 20266-KReport of foreign private issuerView on EDGAR
Jul 29, 20266-KReport of foreign private issuerView on EDGAR
Jul 21, 20266-KReport of foreign private issuerView on EDGAR
Jul 15, 20266-KReport of foreign private issuerView on EDGAR
Jul 14, 20266-KReport of foreign private issuerView on EDGAR
Jul 13, 20264Statement of changes in beneficial ownershipView on EDGAR
Jul 6, 20266-KReport of foreign private issuerView on EDGAR
Jun 30, 20264Statement of changes in beneficial ownershipView on EDGAR
Jun 29, 20266-KReport of foreign private issuerView on EDGAR
Jun 23, 20266-KReport of foreign private issuerView on EDGAR
Jun 22, 20266-KReport of foreign private issuerView on EDGAR
Jun 18, 20266-KReport of foreign private issuerView on EDGAR
Jun 16, 20266-KReport of foreign private issuerView on EDGAR
Jun 5, 20266-KReport of foreign private issuerView on EDGAR
Jun 3, 20266-KReport of foreign private issuerView on EDGAR
May 27, 20266-KReport of foreign private issuerView on EDGAR
May 22, 20266-KReport of foreign private issuerView on EDGAR
May 20, 20266-KReport of foreign private issuerView on EDGAR
May 15, 20266-KReport of foreign private issuerView on EDGAR
May 13, 20266-KReport of foreign private issuerView on EDGAR
May 12, 20266-KReport of foreign private issuerView on EDGAR
May 11, 20266-KReport of foreign private issuerView on EDGAR
May 8, 20266-KReport of foreign private issuerView on EDGAR
May 7, 20266-KReport of foreign private issuerView on EDGAR
Apr 30, 202620-FAnnual report (foreign private issuer)View on EDGAR
Apr 30, 20266-KReport of foreign private issuerView on EDGAR
Apr 29, 20266-KReport of foreign private issuerView on EDGAR
Apr 29, 20266-KReport of foreign private issuerView on EDGAR
Apr 29, 2026SCHEDULE 13G/ABeneficial ownership report (passive) (amendment)View on EDGAR
Apr 21, 20266-KReport of foreign private issuerView on EDGAR
Apr 15, 20266-KReport of foreign private issuerView on EDGAR
Apr 8, 20266-KReport of foreign private issuerView on EDGAR
Mar 26, 20266-KReport of foreign private issuerView on EDGAR
Mar 12, 20266-KReport of foreign private issuerView on EDGAR
Mar 5, 20266-KReport of foreign private issuerView on EDGAR
Feb 25, 20266-KReport of foreign private issuerView on EDGAR
Feb 25, 20266-KReport of foreign private issuerView on EDGAR
Feb 24, 20266-KReport of foreign private issuerView on EDGAR
Feb 13, 20266-KReport of foreign private issuerView on EDGAR
Feb 5, 20266-KReport of foreign private issuerView on EDGAR
Jan 28, 20266-KReport of foreign private issuerView on EDGAR
Jan 14, 20266-KReport of foreign private issuerView on EDGAR
Jan 7, 20266-KReport of foreign private issuerView on EDGAR
Dec 30, 20256-KReport of foreign private issuerView on EDGAR
Dec 17, 20256-KReport of foreign private issuerView on EDGAR
Dec 10, 20256-KReport of foreign private issuerView on EDGAR

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