{"filing":{"accession_number":"0001888524-26-016559","cik":"0001985684","ticker":null,"company_name":"BBCMS Mortgage Trust 2023-C21","form":"8-K","filing_date":"2026-09-02","report_date":"2026-09-01","primary_document":"bcr23c21_8k-09012026.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1985684/000188852426016559/bcr23c21_8k-09012026.htm"},"events":[{"id":31236,"run_id":28655,"accession_number":"0001888524-26-016559","anchor_item_number":"6.02","event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.85,"summary":"This Item 6.02 discloses a change of servicer in a mortgage securitization: Greystone Servicing Company LLC sold its special servicing division to C-IV Asset Management LLC, which assumed all duties and liabilities as special servicer for approximately 60 transactions representing $20.7 billion in aggregate principal balance as of June 30, 2026. While the filing provides extensive operational and financial details about C-IV AM's qualifications and track record, the core event is a governance/administrative change in the servicer role—a material structural change affecting the trust's operations and the certificateholders' interests, though not a departure or appointment of an individual executive.","company_name":"BBCMS Mortgage Trust 2023-C21","ticker":null,"filing_date":"2026-09-02","form":"8-K","submitted_at":null,"items":[{"id":34056,"accession_number":"0001888524-26-016559","item_number":"6.02","item_title":"Change of Servicer or Trustee.","event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.85,"reasoning":"This Item 6.02 discloses a change of servicer in a mortgage securitization: Greystone Servicing Company LLC sold its special servicing division to C-IV Asset Management LLC, which assumed all duties and liabilities as special servicer for approximately 60 transactions representing $20.7 billion in aggregate principal balance as of June 30, 2026. While the filing provides extensive operational and financial details about C-IV AM's qualifications and track record, the core event is a governance/administrative change in the servicer role—a material structural change affecting the trust's operations and the certificateholders' interests, though not a departure or appointment of an individual executive.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-02T14:28:42.739889+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":34056,"accession_number":"0001888524-26-016559","item_number":"6.02","item_title":"Change of Servicer or Trustee.","event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.85,"reasoning":"This Item 6.02 discloses a change of servicer in a mortgage securitization: Greystone Servicing Company LLC sold its special servicing division to C-IV Asset Management LLC, which assumed all duties and liabilities as special servicer for approximately 60 transactions representing $20.7 billion in aggregate principal balance as of June 30, 2026. While the filing provides extensive operational and financial details about C-IV AM's qualifications and track record, the core event is a governance/administrative change in the servicer role—a material structural change affecting the trust's operations and the certificateholders' interests, though not a departure or appointment of an individual executive.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-02T14:28:42.739889+00:00","company_name":"BBCMS Mortgage Trust 2023-C21","ticker":null,"filing_date":"2026-09-02"}]}