{"filing":{"accession_number":"0001193125-26-276606","cik":"0001033767","ticker":"UMC","company_name":"UNITED MICROELECTRONICS CORP","form":"6-K","filing_date":"2026-06-22","report_date":null,"primary_document":"6k_on_06222026.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1033767/000119312526276606/6k_on_06222026.htm"},"events":[{"id":12515,"run_id":11092,"accession_number":"0001193125-26-276606","anchor_item_number":"EX-99","event_type":"financial_other","event_domain":"financial","is_material":true,"confidence":0.75,"summary":"Exhibit 99.2 discloses UMC's disposal of 3,500,832 common shares of Novatek Microelectronics Corporation through conversion of zero-coupon exchangeable bonds due 2026, generating a gain of approximately NTD 1.4 billion to retained earnings. This is a material financial transaction (41.71% of total assets, 57.09% of shareholder equity) involving a significant securities disposition, but does not fit the specific categories of debt issuance, dividend distribution, or M\u0026A activity. Exhibit 99.1 is a routine clarification of market rumors with no substantive disclosure.","company_name":"UNITED MICROELECTRONICS CORP","ticker":"UMC","filing_date":"2026-06-22","form":"6-K","submitted_at":null,"items":[{"id":9389,"accession_number":"0001193125-26-276606","item_number":"EX-99","item_title":"umc-ex99.htm","event_type":"financial_other","event_domain":"financial","is_material":true,"confidence":0.75,"reasoning":"Exhibit 99.2 discloses UMC's disposal of 3,500,832 common shares of Novatek Microelectronics Corporation through conversion of zero-coupon exchangeable bonds due 2026, generating a gain of approximately NTD 1.4 billion to retained earnings. This is a material financial transaction (41.71% of total assets, 57.09% of shareholder equity) involving a significant securities disposition, but does not fit the specific categories of debt issuance, dividend distribution, or M\u0026A activity. Exhibit 99.1 is a routine clarification of market rumors with no substantive disclosure.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-06-22T10:06:26.021012+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":9389,"accession_number":"0001193125-26-276606","item_number":"EX-99","item_title":"umc-ex99.htm","event_type":"financial_other","event_domain":"financial","is_material":true,"confidence":0.75,"reasoning":"Exhibit 99.2 discloses UMC's disposal of 3,500,832 common shares of Novatek Microelectronics Corporation through conversion of zero-coupon exchangeable bonds due 2026, generating a gain of approximately NTD 1.4 billion to retained earnings. This is a material financial transaction (41.71% of total assets, 57.09% of shareholder equity) involving a significant securities disposition, but does not fit the specific categories of debt issuance, dividend distribution, or M\u0026A activity. Exhibit 99.1 is a routine clarification of market rumors with no substantive disclosure.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-06-22T10:06:26.021012+00:00","company_name":"UNITED MICROELECTRONICS CORP","ticker":"UMC","filing_date":"2026-06-22"}]}