{"filing":{"accession_number":"0001292814-26-003936","cik":"0001444406","ticker":"EC","company_name":"ECOPETROL S.A.","form":"6-K","filing_date":"2026-07-28","report_date":"2026-09-30","primary_document":"ec20260728_6k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1444406/000129281426003936/ec20260728_6k.htm"},"events":[{"id":20837,"run_id":18758,"accession_number":"0001292814-26-003936","anchor_item_number":"EX-99.1","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.95,"summary":"The exhibit is a press release disclosing a material cybersecurity incident in which an external actor illegally copied and published information from 15 companies within the Ecopetrol Group. The company explicitly states \"The full scope, impact, and costs of this cybersecurity incident remain uncertain\" and warns of potential regulatory proceedings, litigation, reputational harm, and material adverse effects. This is a clear cybersecurity breach disclosure required under Item 1.05 (as mandated since 2023 for foreign private issuers filing 6-Ks).","company_name":"ECOPETROL S.A.","ticker":"EC","filing_date":"2026-07-28","form":"6-K","submitted_at":null,"items":[{"id":20326,"accession_number":"0001292814-26-003936","item_number":"EX-99.1","item_title":"ex99-1.htm","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.95,"reasoning":"The exhibit is a press release disclosing a material cybersecurity incident in which an external actor illegally copied and published information from 15 companies within the Ecopetrol Group. The company explicitly states \"The full scope, impact, and costs of this cybersecurity incident remain uncertain\" and warns of potential regulatory proceedings, litigation, reputational harm, and material adverse effects. This is a clear cybersecurity breach disclosure required under Item 1.05 (as mandated since 2023 for foreign private issuers filing 6-Ks).","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-07-28T10:09:22.556782+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":20326,"accession_number":"0001292814-26-003936","item_number":"EX-99.1","item_title":"ex99-1.htm","event_type":"cybersecurity_incident","event_domain":"legal","is_material":true,"confidence":0.95,"reasoning":"The exhibit is a press release disclosing a material cybersecurity incident in which an external actor illegally copied and published information from 15 companies within the Ecopetrol Group. The company explicitly states \"The full scope, impact, and costs of this cybersecurity incident remain uncertain\" and warns of potential regulatory proceedings, litigation, reputational harm, and material adverse effects. This is a clear cybersecurity breach disclosure required under Item 1.05 (as mandated since 2023 for foreign private issuers filing 6-Ks).","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-07-28T10:09:22.556782+00:00","company_name":"ECOPETROL S.A.","ticker":"EC","filing_date":"2026-07-28"}]}