FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
ROSENWALD LINDSAY A MD
   2. Issuer Name and Ticker or Trading Symbol
MUSTANG BIO, INC. [MBIO] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
377 PLANTATION STREET		 3. Date of Earliest Transaction (Month/Day/Year)
08/31/2020
(Street)

WORCESTER, MA 01605		 4. If Amendment, Date Original Filed(Month/Day/Year)
12/15/2020		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
COMMON STOCK 08/31/2020   A   1,182 (1) A $ 2.48 102,436 (2) D  
COMMON STOCK 12/14/2020   P   100,000 A $ 2.66 (3) 202,436 (2) (4) D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ROSENWALD LINDSAY A MD
377 PLANTATION STREET
WORCESTER, MA 01605		   X      

Signatures

 /s/ Manuel Litchman, Attorney-in-Fact   12/22/2020
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) These shares were acquired under the Mustang Bio, Inc. Employee Share Purchase Plan ("ESPP") for the ESPP purchase period beginning on March 1, 2020 and ending on August 31, 2020 in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c). In accordance with the terms of the ESPP, these shares were purchased at a price equal to 85% of the fair market value closing price of the Issuer's ordinary shares on February 28, 2020 (the purchase date of the offering period).
(2) Includes restricted share units, which vest over various time periods.
(3) Reflects the weighted average sale price of multiple same-way open market sale transactions effected by the Reporting Person on the same day at different prices through a sale order executed by a broker-dealer. The Reporting Person reported on a single line all such transactions that occurred within a one-dollar price range. The range of prices for the sale transactions on December 14, 2020, was $2.59 to $2.73. The Reporting Person hereby undertakes to provide upon request by the Securities Exchange Commission staff, the Issuer, or a shareholder of the Issuer, full information regarding the number of shares sold at each separate price.
(4) 1,183 ESPP shares were inadvertently omitted from Dr. Rosenwald's original Form 4 filed on December 15, 2020.

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