{"schema_version":"secwatch.filing_event.v1","accession":"0001888524-26-016559","form_type":"8-K","ticker":null,"cik":"0001985684","company_name":"BBCMS Mortgage Trust 2023-C21","filed_at":"2026-09-02T14:26:13+00:00","discovered_at":"2026-09-02T14:27:14.565554+00:00","generated_at":"2026-09-02T14:27:30.897454+00:00","sec_items":["6.02"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Greystone special servicing division sold to C-IV AM; assumes servicer role for BBCMS 2023-C21","bullets":["Greystone sold its special servicing division to C-IV Asset Management LLC effective Sept 1, 2026; C-IV AM assumed all special servicer duties for the 11 West 42nd Street Mortgage Loan.","C-IV AM is a wholly-owned subsidiary of C-IV Capital Partners LLC; key Greystone special servicing employees transferred to C-IV AM.","As of June 30, 2026, transferred portfolio: ~60 transactions, ~1,928 first-lien loans, ~$20.7B aggregate principal; ~$2.1B in active special servicing.","C-IV AM holds ratings MOR CS2 (Morningstar DBRS) and CSS2 (Fitch); on S&P Select Servicer list ranked 'Average; Ranking Watch Positive'.","C-IV AM has no servicer event of default or termination event; no material legal proceedings pending."],"urls":{"canonical":"https://secwatch.observer/filing/0001888524-26-016559","json":"https://secwatch.observer/filing/0001888524-26-016559.json","markdown":"https://secwatch.observer/filing/0001888524-26-016559.md","text":"https://secwatch.observer/filing/0001888524-26-016559.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1985684/000188852426016559/0001888524-26-016559-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1985684/000188852426016559/bcr23c21_8k-09012026.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-02T14:27:30.897454+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}