{"filing":{"accession_number":"0001193125-26-324785","cik":"0001033767","ticker":"UMC","company_name":"UNITED MICROELECTRONICS CORP","form":"6-K","filing_date":"2026-07-30","report_date":"2026-07-30","primary_document":"6k_on_07302026.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1033767/000119312526324785/6k_on_07302026.htm"},"events":[{"id":21907,"run_id":19774,"accession_number":"0001193125-26-324785","anchor_item_number":"EX-99","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"summary":"Exhibit 99.1 announces the conversion price and premium rate for UMC's 1st domestic unsecured convertible corporate bond, which has become effective upon FSC filing. The conversion price is set at NT$146.0 per share based on a 119.97% premium rate. This is a material debt issuance event involving a convertible bond instrument that creates a direct financial obligation and affects shareholder rights through dilution potential.","company_name":"UNITED MICROELECTRONICS CORP","ticker":"UMC","filing_date":"2026-07-30","form":"6-K","submitted_at":null,"items":[{"id":21679,"accession_number":"0001193125-26-324785","item_number":"EX-99","item_title":"umc-ex99.htm","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"reasoning":"Exhibit 99.1 announces the conversion price and premium rate for UMC's 1st domestic unsecured convertible corporate bond, which has become effective upon FSC filing. The conversion price is set at NT$146.0 per share based on a 119.97% premium rate. This is a material debt issuance event involving a convertible bond instrument that creates a direct financial obligation and affects shareholder rights through dilution potential.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-07-30T10:08:18.036061+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":21679,"accession_number":"0001193125-26-324785","item_number":"EX-99","item_title":"umc-ex99.htm","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.85,"reasoning":"Exhibit 99.1 announces the conversion price and premium rate for UMC's 1st domestic unsecured convertible corporate bond, which has become effective upon FSC filing. The conversion price is set at NT$146.0 per share based on a 119.97% premium rate. This is a material debt issuance event involving a convertible bond instrument that creates a direct financial obligation and affects shareholder rights through dilution potential.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-07-30T10:08:18.036061+00:00","company_name":"UNITED MICROELECTRONICS CORP","ticker":"UMC","filing_date":"2026-07-30"}]}