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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1. Name and Address of Reporting Person * Celgene European Investment Co LLC   2. Issuer Name and Ticker or Trading Symbol AGIOS PHARMACEUTICALS INC [AGIO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 86 MORRIS AVENUE,  3. Date of Earliest Transaction (Month/Day/Year) 04/24/2017 (Street) SUMMIT, NJ 07901 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ 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 04/24/2017   P   624,575 A $ 49.5 1,856,353 I See footnote (1) Common Stock               4,010,926 D (2)

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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
Celgene European Investment Co LLC 86 MORRIS AVENUE SUMMIT, NJ 07901		X
Celgene Switzerland LLC AON HOUSE 30 WOODBOURNE AVENUE PEMBROKE, D0 HM 08		X
Celgene Alpine Investment Co., LLC 86 MORRIS AVENUE SUMMIT, NJ 07901		X
CELGENE CORP /DE/ 86 MORRIS AVENUE SUMMIT, NJ 07901		X

Signatures

/s/Kevin Mello, Manager, Celgene European Investment Company LLC		04/24/2017
**Signature of Reporting Person		Date
/s/ Kevin Mello, Manager, Celgene Switzerland LLC		04/24/2017
**Signature of Reporting Person		Date
/s/ Kevin Mello, Manager, Celgene Alpine Investment Co., LLC		04/24/2017
**Signature of Reporting Person		Date
/s/ Peter N. Kellogg, Executive Vice President & Chief Financial Officer, Celgene Corporation		04/24/2017
**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)	Of these shares, 624,575 shares are owned directly by Celgene Switzerland LLC ("Celgene Switzerland"), 708,333 shares are owned directly by Celgene Alpine Investment Co. LLC ("Celgene Alpine"), each a wholly-owned subsidiary of Celgene Corporation ("Celgene"), and Celgene has the power to vote, acquire, hold and dispose of all such shares. Celgene and Celgene European Investment Company LLC, a wholly owned subsidiary of Celgene ("CEICO"), disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein. The remaining 523,445 shares are owned directly by Celgene. CEICO, Celgene Switzerland and Celgene Alpine disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.
(2)	These shares are owned directly by CEICO, and Celgene has the power to vote, acquire, hold and dispose of all shares. Celgene, Celgene Switzerland and Celgene Alpine disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.

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