---
schema_version: "secwatch.filing_event.v1"
accession: "0001888524-26-016504"
form_type: "8-K"
ticker: null
cik: "0001966434"
company_name: "BBCMS Mortgage Trust 2023-C19"
filed_at: "2026-09-01T20:31:31+00:00"
generated_at: "2026-09-01T20:33:31.884130+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 acquires Greystone's special servicing unit; becomes special servicer for BBCMS 2023-C19

## Summary
- On Sept 1, 2026, Greystone sold its special servicing division to C-IV AM; C-IV AM assumes special servicer duties for Sentinel Square II and 575 Broadway loans.
- C-IV AM rated MOR CS2 (Morningstar DBRS), CSS2 (Fitch), and 'Average; Ranking Watch Positive' (S&P).
- As of 6/30/2026, Greystone's portfolio: 60 transactions, 1,928 loans, $20.7B principal; 33 CMBS deals with $14.2B.
- Active special servicing: 108 assets, $2.1B principal; C-IV AM has resolved 6,017 assets totaling $60.7B since 2002.
- C-IV AM is a wholly-owned subsidiary of C-IV Capital Partners; key Greystone special servicing employees transferred.

## SEC filing metadata
- accession: 0001888524-26-016504
- form_type: 8-K
- cik: 0001966434
- company_name: BBCMS Mortgage Trust 2023-C19
- filed_at: 2026-09-01T20:31:31+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/1966434/000188852426016504/0001888524-26-016504-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1966434/000188852426016504/bcr23c19_8k-09012026.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001888524-26-016504
- JSON: https://secwatch.observer/filing/0001888524-26-016504.json
- Plain text: https://secwatch.observer/filing/0001888524-26-016504.txt

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