---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-044767"
form_type: "8-K"
ticker: "MBIO"
cik: "0001680048"
company_name: "MUSTANG BIO, INC."
filed_at: "2023-04-13T23:59:59+00:00"
generated_at: "2026-06-17T02:41:48.290422+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Mustang Bio terminates $75M Runway loan, pays $30.7M payoff

## Summary
- Terminated Runway Loan Agreement (March 4, 2022) on April 11, 2023.
- Company paid $30.7M to Runway Growth Finance Corp. covering principal, interest, and final payment.
- Original facility provided up to $75M in term loans subject to milestone achievements.
- Certain indemnification obligations under Section 12.3 survive termination.

## SEC filing metadata
- accession: 0001104659-23-044767
- form_type: 8-K
- ticker: MBIO
- cik: 0001680048
- company_name: MUSTANG BIO, INC.
- filed_at: 2023-04-13T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1680048/000110465923044767/0001104659-23-044767-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1680048/000110465923044767/tm2312633d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-044767
- JSON: https://secwatch.observer/filing/0001104659-23-044767.json
- Plain text: https://secwatch.observer/filing/0001104659-23-044767.txt

## Key facts
- Material Agreements
  MUSTANG BIO, INC. terminated Loan and Security Agreement with Runway Growth Finance Corp. valued at $30.7 million (effective 2023-04-11).
  - Action: termination
  - Agreement: credit facility
  - Counterparty: Runway Growth Finance Corp.
  - Value: $30.7 million
  - Effective: 2023-04-11
  source text: On April 11, 2023, the Loan and Security Agreement, dated as of March 4, 2022, by and among Mustang Bio, Inc. (the “Company”) and Runway Growth Finance Corp., as a lender and as administrative agent and collateral agent for Lenders (“Runway”), as amended by the First Amendment, dated as of December 7, 2022 (together, the “Runway Loan Agreement”), was terminated upon receipt by Runway of a payoff amount of $30.7 million from the Company
  evidence_url: https://www.sec.gov/Archives/edgar/data/1680048/000110465923044767/0001104659-23-044767-index.htm

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