{"filing":{"accession_number":"0001292814-26-004556","cik":"0001049659","ticker":"SID","company_name":"NATIONAL STEEL CO","form":"6-K","filing_date":"2026-09-15","report_date":"2026-09-30","primary_document":"sid20260914_6k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1049659/000129281426004556/sid20260914_6k.htm"},"events":[{"id":33514,"run_id":30816,"accession_number":"0001292814-26-004556","anchor_item_number":null,"event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.85,"summary":"This 6-K discloses a material change in the company's leadership structure. Benjamin Steinbruch transitioned from Chief Executive Officer (a position he held since April 30, 2002) to Chairman of the Board on September 2, 2026, while Fabio Schvartsman was appointed as the new Chief Executive Officer on the same date. This represents a significant governance event—the succession of the CEO after 24 years of tenure—that would materially affect a reasonable investor's assessment of the company's leadership and strategic direction.","company_name":"NATIONAL STEEL CO","ticker":"SID","filing_date":"2026-09-15","form":"6-K","submitted_at":null,"items":null}],"classifications":[{"id":36975,"accession_number":"0001292814-26-004556","item_number":null,"item_title":null,"event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.85,"reasoning":"This 6-K discloses a material change in the company's leadership structure. Benjamin Steinbruch transitioned from Chief Executive Officer (a position he held since April 30, 2002) to Chairman of the Board on September 2, 2026, while Fabio Schvartsman was appointed as the new Chief Executive Officer on the same date. This represents a significant governance event—the succession of the CEO after 24 years of tenure—that would materially affect a reasonable investor's assessment of the company's leadership and strategic direction.","classifier_version":"claude-haiku-4-5-20251001+prompt-6be895f9","taxonomy_version":"v1.3","classified_at":"2026-09-15T12:47:39.039422+00:00","company_name":"NATIONAL STEEL CO","ticker":"SID","filing_date":"2026-09-15"}]}