---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-053706"
form_type: "8-K"
ticker: "MBIO"
cik: "0001680048"
company_name: "MUSTANG BIO, INC."
filed_at: "2024-04-29T23:59:59+00:00"
generated_at: "2026-06-03T05:37:45.192818+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Mustang Bio prelim Q1 cash $1.3M, operating burn $5.3M, cash runway concerns

## Summary
- Preliminary cash and equivalents as of March 31, 2024: approximately $1.3 million.
- Cash used in operating activities for Q1 2024: approximately $5.3 million.
- Results are preliminary and subject to completion of closing procedures; actual results may differ.
- Company cautions not to place undue reliance on these estimates.

## SEC filing metadata
- accession: 0001104659-24-053706
- form_type: 8-K
- ticker: MBIO
- cik: 0001680048
- company_name: MUSTANG BIO, INC.
- filed_at: 2024-04-29T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1680048/000110465924053706/0001104659-24-053706-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1680048/000110465924053706/tm2412956d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-053706
- JSON: https://secwatch.observer/filing/0001104659-24-053706.json
- Plain text: https://secwatch.observer/filing/0001104659-24-053706.txt

## Key facts
- Earnings Releases
  MUSTANG BIO, INC. reported preliminary financial results for the three months ended March 31, 2024.
  - Period: the three months ended March 31, 2024
  - Result: preliminary results
  source text: Based on information currently available, we estimate that as of March 31, 2024, cash and cash equivalents were approximately $1.3 million, and cash used in operating activities for the first quarter of 2024 was $5.3 million.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1680048/000110465924053706/0001104659-24-053706-index.htm

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