---
schema_version: "secwatch.filing_event.v1"
accession: "0001888524-26-016553"
form_type: "8-K"
ticker: null
cik: "0001696707"
company_name: "BBCMS Mortgage Trust 2017-C1"
filed_at: "2026-09-02T14:14:52+00:00"
generated_at: "2026-09-02T14:16:17.222134+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 BBCMS 2017-C1 after Greystone sale

## Summary
- On Sept 1, 2026, Greystone sold its special servicing division to C-IV AM, which assumed all duties as special servicer for the trust's loans.
- C-IV AM is rated MOR CS2 (Morningstar DBRS) and CSS2 (Fitch); on S&P Select Servicer list with 'Average; Ranking Watch Positive'.
- As of June 30, 2026, Greystone's portfolio had ~60 transactions, ~1,928 loans, $20.7B principal; ~108 assets ($2.1B) in active special servicing.
- C-IV AM has resolved 6,017 assets since 2002 with aggregate principal of ~$60.7B; no servicer event of default.
- All of Greystone's named portfolio transfers to C-IV AM except two CLOs; key employees continue in same roles.

## SEC filing metadata
- accession: 0001888524-26-016553
- form_type: 8-K
- cik: 0001696707
- company_name: BBCMS Mortgage Trust 2017-C1
- filed_at: 2026-09-02T14:14:52+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/1696707/000188852426016553/0001888524-26-016553-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1696707/000188852426016553/bcr17c01_8k-09012026.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001888524-26-016553
- JSON: https://secwatch.observer/filing/0001888524-26-016553.json
- Plain text: https://secwatch.observer/filing/0001888524-26-016553.txt

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