MBIOMUSTANG BIO, INC.

Is Mustang Bio struggling financially?

Yes, by its own account. Mustang Bio told the SEC on 19 Mar 2026, in Form 10-K, that there is substantial doubt about its ability to continue as a going concern.

Going concern disclosed Mar 2026

30/100

Fragile

Sector
Biotech/Pharma
Market cap
$4.4M
Source filing
10-K 19 Mar 2026
Balance sheet
30 Jun 2026

Cash runway

  • 18months

    If the burn speeds up

    Empty by Dec 2027

  • 26months

    If it eases off

    Empty by Aug 2028

Both rows are the same reported burn flexed 15% either way, and neither assumes the company raises a cent.

Out of cashTwo years or more

The runway math

Cash and short-term investments

$15.2M

÷

Cash burned over the last 12 months

$8.2M

What Mustang Bio told the SEC

…financial statements for the year ended December 31, 2024 and in our most recent quarterly report on Form 10-Q for the period ended September 30, 2025 that substantial doubt existed regarding our ability to continue as a going concern. Although we have a history of negative cash flows from operations and operating losses, during the year ended December 31, 2025 we raised approximately $14.5 million in net proceeds…

MUSTANG BIO, INC., Form 10-K, filed 19 Mar 2026.

Read the filing on SEC.gov

What this means

  • Not a bankruptcy filing, and not a prediction.
  • It is the company’s own statement, agreed with its auditor, that the doubt is material enough to disclose.
  • The runway is arithmetic on two reported numbers, not a forecast. Companies carry this language for years, raise money and keep going.

What else the numbers show

  • 95.4% share-count increase The company issued stock. Each share now owns 48.8% less of the business than a year ago, before any change in the price.
  • Cash burn is narrowing It is spending 47% less cash per year than it was, so the runway above is lengthening rather than shortening.

Other Biotech/Pharma companies that filed the doubt