---
schema_version: "secwatch.filing_event.v1"
accession: "0001888524-26-016551"
form_type: "8-K"
ticker: null
cik: "0001699462"
company_name: "Wells Fargo Commercial Mortgage Trust 2017-RB1"
filed_at: "2026-09-02T14:09:20+00:00"
generated_at: "2026-09-02T14:10:30.218897+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# C-IV Asset Management becomes special servicer for WFCM 2017-RB1 after Greystone sale

## Summary
- On Sept 1, 2026, Greystone sold its special servicing division to C-IV AM, which assumed all special servicer duties for the trust.
- C-IV AM rated MOR CS2 (Morningstar DBRS) and CSS2 (Fitch); on S&P Select Servicer list.
- As of 6/30/26, Greystone's portfolio: ~60 transactions, $20.7B principal; ~108 assets ($2.1B) in active special servicing.
- C-IV AM has resolved 6,017 assets totaling ~$60.7B since 2002; no servicer event of default.
- C-IV AM is affiliate of C-III High Yield Real Estate Debt Fund IV, which is directing certificateholder (potential conflict).

## SEC filing metadata
- accession: 0001888524-26-016551
- form_type: 8-K
- cik: 0001699462
- company_name: Wells Fargo Commercial Mortgage Trust 2017-RB1
- filed_at: 2026-09-02T14:09:20+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 6.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1699462/000188852426016551/0001888524-26-016551-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1699462/000188852426016551/wcm17rb1_8k-09012026.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001888524-26-016551
- JSON: https://secwatch.observer/filing/0001888524-26-016551.json
- Plain text: https://secwatch.observer/filing/0001888524-26-016551.txt

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