{"filing":{"accession_number":"0001554855-26-001892","cik":"0001430162","ticker":"CSAN","company_name":"Cosan S.A.","form":"6-K","filing_date":"2026-08-20","report_date":"2026-08-20","primary_document":"MainDocument.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1430162/000155485526001892/MainDocument.htm"},"events":[{"id":28769,"run_id":26331,"accession_number":"0001554855-26-001892","anchor_item_number":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.75,"summary":"Cosan discloses that it is \"evaluating alternatives for the sale of a portion of its equity interest in Rumo S.A.\" and that potential buyers are submitting \"binding proposals.\" This constitutes a material acquisition or disposition activity (M\u0026A activity) under Item 1.01/1.02 equivalent. Although no final decision has been made, the company is actively in the binding-proposal phase of a potential divestiture of a significant stake, which would materially affect investor assessment of the company's capital structure and deleveraging strategy.","company_name":"Cosan S.A.","ticker":"CSAN","filing_date":"2026-08-20","form":"6-K","submitted_at":null,"items":null}],"classifications":[{"id":30814,"accession_number":"0001554855-26-001892","item_number":null,"item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.75,"reasoning":"Cosan discloses that it is \"evaluating alternatives for the sale of a portion of its equity interest in Rumo S.A.\" and that potential buyers are submitting \"binding proposals.\" This constitutes a material acquisition or disposition activity (M\u0026A activity) under Item 1.01/1.02 equivalent. Although no final decision has been made, the company is actively in the binding-proposal phase of a potential divestiture of a significant stake, which would materially affect investor assessment of the company's capital structure and deleveraging strategy.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-08-20T14:04:39.135869+00:00","company_name":"Cosan S.A.","ticker":"CSAN","filing_date":"2026-08-20"}]}