Ownership Submission
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, Section 17(a) of the Public Utility Holding Company Act of 1935 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 *
Kumar Ravindra
   2. Issuer Name and Ticker or Trading Symbol
ACCELERON PHARMA INC [XLRN] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP & Chief Scientific Officer
(Last)
(First)
(Middle)
128 SIDNEY STREET		 3. Date of Earliest Transaction (Month/Day/Year)
09/02/2014
(Street)

CAMBRIDGE, MA 02139		 4. If Amendment, Date Original Filed(Month/Day/Year)
09/04/2014		 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

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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
Option to Purchase Common Stock $ 5.88 09/02/2014   M(1)     2,000   (2) 12/17/2018(3) Common Stock 2,000 $ 0 20,500 (4) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Kumar Ravindra
128 SIDNEY STREET
CAMBRIDGE, MA 02139		       VP & Chief Scientific Officer  

Signatures

 /s/ John D. Quisel, as attorney-in-fact for Ravindra Kumar   12/02/2014
**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) The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.
(2) The options of registrant's common stock vested in equal quarterly installments over the first four years after the grant.
(3) The expiration date contained in column 6 of the Form 4 filed on September 4, 2014 was incorrect and inadvertently referenced a different option to purchase common stock with the same exercise price.
(4) The number of derivative securities beneficially owned following the reported transaction in column 9 of the Form 4 filed on September 4, 2014 incorrectly referenced an option with the same exercise price but with an expiration date of December 2, 2019 instead of the correct option expiring on December 17, 2018. As a result, the number of derivative securities beneficially owned following the reported transaction in column 9 for the option grant with an exercise price of $5.88 per share expiring on December 17, 2018 contained in the Form 4s originally filed on October 1, 2014 and November 14, 2014 are correctly calculated as 16,500 and 12,500, respectively, and the number of derivative securities beneficially owned following the reported transaction in column 9 for the option grant at an exercise price of $5.88 per share expiring on December 2, 2019 for the Form 4s originally filed on October 1, 2014 and November 14, 2014 are correctly calculated as 8,500 and 3,500, respectively.
 
Remarks:
As noted in footnote 4, this Form 4/A amends the Form 4s filed on September 4, 2014, October 1, 2014 and November 14, 2014.

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