https://www.developersdigest.tech/markets/umc/filings Latest company filings for UNITED MICROELECTRONICS CORP (UMC) - annual reports, quarterly reports, major events, and insider trades, newest first. en Fri, 10 Jul 2026 06:55:56 GMT https://www.sec.gov/Archives/edgar/data/1033767/000119312526235406/6k_on_05222026.htm 0001193125-26-235406 Fri, 22 May 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526231655/6k_on_05202026.htm 0001193125-26-231655 Wed, 20 May 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526225017/6k_on_05152026.htm 0001193125-26-225017 Fri, 15 May 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526220535/6k_on_05132026.htm 0001193125-26-220535 Wed, 13 May 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526218058/6k_on_05122026.htm 0001193125-26-218058 Tue, 12 May 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526215564/6k_on_05112026.htm 0001193125-26-215564 Mon, 11 May 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526213164/6k_on_05082026.htm 0001193125-26-213164 Fri, 08 May 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526210209/xslF345X06/ownership.xml 0001193125-26-210209 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210206/xslF345X06/ownership.xml 0001193125-26-210206 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210203/xslF345X06/ownership.xml 0001193125-26-210203 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210200/xslF345X06/ownership.xml 0001193125-26-210200 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210195/xslF345X06/ownership.xml 0001193125-26-210195 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210189/xslF345X06/ownership.xml 0001193125-26-210189 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210184/xslF345X06/ownership.xml 0001193125-26-210184 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210181/xslF345X06/ownership.xml 0001193125-26-210181 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210177/xslF345X06/ownership.xml 0001193125-26-210177 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210172/xslF345X06/ownership.xml 0001193125-26-210172 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210168/xslF345X06/ownership.xml 0001193125-26-210168 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210164/xslF345X06/ownership.xml 0001193125-26-210164 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210161/xslF345X06/ownership.xml 0001193125-26-210161 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210154/xslF345X06/ownership.xml 0001193125-26-210154 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210149/xslF345X06/ownership.xml 0001193125-26-210149 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210144/xslF345X06/ownership.xml 0001193125-26-210144 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210142/xslF345X06/ownership.xml 0001193125-26-210142 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210135/xslF345X06/ownership.xml 0001193125-26-210135 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210126/xslF345X06/ownership.xml 0001193125-26-210126 Thu, 07 May 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526210117/6k_on_05072026.htm 0001193125-26-210117 Thu, 07 May 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526193804/6k_on_04302026.htm 0001193125-26-193804 Thu, 30 Apr 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526193757/d91630d20f.htm 0001193125-26-193757 Thu, 30 Apr 2026 12:00:00 GMT 20-F https://www.sec.gov/Archives/edgar/data/1033767/000201238326001777/xslSCHEDULE_13G_X02/primary_doc.xml 0002012383-26-001777 Wed, 29 Apr 2026 12:00:00 GMT SCHEDULE 13G/A https://www.sec.gov/Archives/edgar/data/1033767/000119312526188808/2026q1_quarterly_reports.htm 0001193125-26-188808 Wed, 29 Apr 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526188788/6k_on_04292026.htm 0001193125-26-188788 Wed, 29 Apr 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526164977/6k_on_04212026.htm 0001193125-26-164977 Tue, 21 Apr 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526155859/6k_on_04152026.htm 0001193125-26-155859 Wed, 15 Apr 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526146257/6k_on_04082026.htm 0001193125-26-146257 Wed, 08 Apr 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526124974/6k_on_03262026.htm 0001193125-26-124974 Thu, 26 Mar 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526112213/xslF345X06/ownership.xml 0001193125-26-112213 Wed, 18 Mar 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526112206/xslF345X06/ownership.xml 0001193125-26-112206 Wed, 18 Mar 2026 12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526112192/xslF345X06/ownership.xml 0001193125-26-112192 Wed, 18 Mar 2026 12:00:00 GMT 3 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12:00:00 GMT 3 https://www.sec.gov/Archives/edgar/data/1033767/000119312526103006/6k_on_03122026.htm 0001193125-26-103006 Thu, 12 Mar 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526092413/6k_on_03052026.htm 0001193125-26-092413 Thu, 05 Mar 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526068366/2025_annual_reports.htm 0001193125-26-068366 Wed, 25 Feb 2026 12:00:00 GMT 6-K https://www.sec.gov/Archives/edgar/data/1033767/000119312526068351/6k_on_02252026.htm 0001193125-26-068351 Wed, 25 Feb 2026 12:00:00 GMT 6-K