• Mustang Bio received a Nasdaq notice on April 15, 2026, citing noncompliance with Listing Rule 5550(a)(2) after its stock closed below $1 for 30 consecutive business days.
• Nasdaq granted a 180-day compliance window through Oct. 12, 2026, requiring a closing bid of at least $1 for at least 10 consecutive business days.
• Failure to regain compliance by Oct. 12 could trigger a delisting notice, though Mustang Bio may qualify for a second 180-day period if it meets initial listing standards.
• Regaining compliance in a second period could require a reverse stock split, subject to Mustang Bio providing written notice of its intent to cure the deficiency.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Mustang Bio Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001104659-26-044890), on April 17, 2026, and is solely responsible for the information contained therein.