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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Taub Rebecca 		2. Issuer Name and Ticker or Trading Symbol

SYNTA PHARMACEUTICALS CORP [ MDGL ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      __ X __ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Chief Medical Officer, EVP R&D
(Last)          (First)          (Middle)

C/O MADRIGAL PHARMACEUTICALS, INC., 500 OFFICE CENTER DRIVE, SUITE 400 		3. Date of Earliest Transaction (MM/DD/YYYY)

7/22/2016
(Street)

FORT WASHINGTON, PA 19034
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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   7/22/2016     A    729066   (1) A $0   729066   I   SQN, LLC   (2)
Common Stock   7/22/2016     A    404132   (1) A $0   404132   D    
Common Stock   7/22/2016     A    28740   A $0   432872   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Employee Stock Option (Right to Buy)   $9.45   7/22/2016     A      143557       7/22/2016   7/22/2026   Common Stock   143557   $0   143557   D    

Explanation of Responses:
( 1)  Shares issued relate to the exchange of shares of Madrigal Pharmaceuticals, Inc. ("Madrigal"), as a private company, for shares of Synta Pharmaceuticals Corp. ("Synta"), per Synta's agreement to acquire Madrigal, dated April 13, 2016 (the "Merger"). After the completion of the Merger, Synta changed its name to Madrigal Pharmaceuticals, Inc.
( 2)  Dr. Taub disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

Remarks:
Exhibit List: Exhibit 24.1 Power of Attorney

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Taub Rebecca
C/O MADRIGAL PHARMACEUTICALS, INC.
500 OFFICE CENTER DRIVE, SUITE 400
FORT WASHINGTON, PA 19034 		X X Chief Medical Officer, EVP R&D

Signatures
/s/ Michael Lawhead, as attorney-in-fact for Rebecca Taub 7/26/2016
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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