---
schema_version: "secwatch.filing_event.v1"
accession: "0001888524-26-016522"
form_type: "8-K"
ticker: null
cik: "0001996001"
company_name: "BANK5 2023-5YR4"
filed_at: "2026-09-02T13:23:38+00:00"
generated_at: "2026-09-02T13:25:10.162777+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# C-IV AM assumes special servicer role for two BANK5 2023-5YR4 loans from Greystone

## Summary
- Greystone sold special servicing division to C-IV AM on 9/1/2026; C-IV AM now special servicer for the trust's two loans.
- C-IV AM rated MOR CS2 by Morningstar DBRS and CSS2 by Fitch; on S&P Select Servicer list.
- As of 6/30/2026, Greystone's portfolio: 60 transactions, $20.7B UPB; 33 CMBS deals, $14.2B; 108 assets ($2.1B) active.
- C-IV AM has resolved 6,017 assets totaling $60.7B since 2002; no servicer defaults or material litigation.

## SEC filing metadata
- accession: 0001888524-26-016522
- form_type: 8-K
- cik: 0001996001
- company_name: BANK5 2023-5YR4
- filed_at: 2026-09-02T13:23:38+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 6.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1996001/000188852426016522/0001888524-26-016522-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1996001/000188852426016522/bak23yr4_8k-09012026.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001888524-26-016522
- JSON: https://secwatch.observer/filing/0001888524-26-016522.json
- Plain text: https://secwatch.observer/filing/0001888524-26-016522.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.