{"schema_version":"secwatch.filing_event.v1","accession":"0001888524-26-016518","form_type":"8-K","ticker":null,"cik":"0001840121","company_name":"BANK 2021-BNK31","filed_at":"2026-09-02T13:17:44+00:00","discovered_at":"2026-09-02T13:19:19.096260+00:00","generated_at":"2026-09-02T13:19:27.193888+00:00","sec_items":["6.02"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"C-IV AM acquires Greystone's special servicing portfolio; becomes special servicer for BANK 2020-BNK30 loans","bullets":["Greystone sold special servicing division to C-IV AM effective Sept 1, 2026; C-IV AM assumes duties for 605 Third Avenue and McDonald's Global HQ loans.","Portfolio: ~60 transactions, $20.7B UPB, 1,928 loans; 33 CMBS deals with $14.2B.","Active special servicing: $2.1B across ~108 assets as of 6/30/2026.","C-IV AM rated MOR CS2 (Morningstar DBRS) and CSS2 (Fitch); on S&P Select Servicer list.","No servicer event of default; financial condition not expected to impact performance."],"urls":{"canonical":"https://secwatch.observer/filing/0001888524-26-016518","json":"https://secwatch.observer/filing/0001888524-26-016518.json","markdown":"https://secwatch.observer/filing/0001888524-26-016518.md","text":"https://secwatch.observer/filing/0001888524-26-016518.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1840121/000188852426016518/0001888524-26-016518-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1840121/000188852426016518/wcm21b31_8k-09012026.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-02T13:19:27.193888+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"}