{"filing":{"accession_number":"0001292814-26-004294","cik":"0001071438","ticker":"BAK","company_name":"BRASKEM SA","form":"6-K","filing_date":"2026-08-19","report_date":"2026-09-30","primary_document":"bak20260810_6k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1071438/000129281426004294/bak20260810_6k.htm"},"events":[{"id":28596,"run_id":26165,"accession_number":"0001292814-26-004294","anchor_item_number":null,"event_type":"auditor_change","event_domain":"governance","is_material":true,"confidence":0.95,"summary":"The 6-K discloses that Braskem's Board of Directors has approved the hiring of Deloitte Touche Tohmatsu Auditores Independentes Ltda. to replace KPMG Auditores Independentes as the independent auditor for consolidated financial statements and quarterly information for fiscal years 2026 through 2028. This is a clear auditor change triggered by a change in shareholding structure and governance arrangement, with Deloitte beginning activities in Q3 2026.","company_name":"BRASKEM SA","ticker":"BAK","filing_date":"2026-08-19","form":"6-K","submitted_at":null,"items":null}],"classifications":[{"id":30592,"accession_number":"0001292814-26-004294","item_number":null,"item_title":null,"event_type":"auditor_change","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The 6-K discloses that Braskem's Board of Directors has approved the hiring of Deloitte Touche Tohmatsu Auditores Independentes Ltda. to replace KPMG Auditores Independentes as the independent auditor for consolidated financial statements and quarterly information for fiscal years 2026 through 2028. This is a clear auditor change triggered by a change in shareholding structure and governance arrangement, with Deloitte beginning activities in Q3 2026.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-08-19T21:05:01.412181+00:00","company_name":"BRASKEM SA","ticker":"BAK","filing_date":"2026-08-19"}]}