{"filing":{"accession_number":"0001104659-26-074110","cik":"0001073404","ticker":"GGB","company_name":"GERDAU S.A.","form":"6-K","filing_date":"2026-06-15","report_date":null,"primary_document":"tm2618001d1_6k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1073404/000110465926074110/tm2618001d1_6k.htm"},"events":[{"id":12223,"run_id":10787,"accession_number":"0001104659-26-074110","anchor_item_number":"EX-99.1","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"summary":"Gerdau has entered into a binding Share Purchase Agreement to acquire COPEL's 23.03% equity interest in Dona Francisca Energética S.A. for R$150 million enterprise value. This is a material acquisition of an equity interest in a hydroelectric power generation asset that will increase Gerdau's ownership from 53.94% to 100% (combined with a separate CELESC acquisition) and expand self-generation capacity by 30.4 average MW, directly supporting the company's strategic decarbonization objectives.","company_name":"GERDAU S.A.","ticker":"GGB","filing_date":"2026-06-15","form":"6-K","submitted_at":null,"items":[{"id":9023,"accession_number":"0001104659-26-074110","item_number":"EX-99.1","item_title":"tm2618001d1_ex99-1.htm","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"Gerdau has entered into a binding Share Purchase Agreement to acquire COPEL's 23.03% equity interest in Dona Francisca Energética S.A. for R$150 million enterprise value. This is a material acquisition of an equity interest in a hydroelectric power generation asset that will increase Gerdau's ownership from 53.94% to 100% (combined with a separate CELESC acquisition) and expand self-generation capacity by 30.4 average MW, directly supporting the company's strategic decarbonization objectives.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-06-22T02:25:38.463137+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":9023,"accession_number":"0001104659-26-074110","item_number":"EX-99.1","item_title":"tm2618001d1_ex99-1.htm","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"Gerdau has entered into a binding Share Purchase Agreement to acquire COPEL's 23.03% equity interest in Dona Francisca Energética S.A. for R$150 million enterprise value. This is a material acquisition of an equity interest in a hydroelectric power generation asset that will increase Gerdau's ownership from 53.94% to 100% (combined with a separate CELESC acquisition) and expand self-generation capacity by 30.4 average MW, directly supporting the company's strategic decarbonization objectives.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-06-22T02:25:38.463137+00:00","company_name":"GERDAU S.A.","ticker":"GGB","filing_date":"2026-06-15"}]}