FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   Stewart Stanford John 2. Date of Event Requiring Statement (Month/Day/Year) 10/09/2013 3. Issuer Name and Ticker or Trading Symbol MACROGENICS INC [MGNX] (Last) (First) (Middle) C/O MACROGENICS, INC., 9640 MEDICAL CENTER DRIVE 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) V P, Clinical Oncology 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) ROCKVILLE, MD 20850 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	05/20/2009(1)	11/19/2018	Common Stock	21,305 (2)	$ 0.94	D	Â
Stock Option (right to buy)	07/11/2009(1)	01/10/2019	Common Stock	4,421 (2)	$ 0.94	D	Â
Stock Option (right to buy)	07/11/2009(1)	01/10/2019	Common Stock	2,237 (2)	$ 0.94	D	Â
Stock Option (right to buy)	07/10/2010(1)	01/09/2020	Common Stock	15,980 (2)	$ 0.94	D	Â
Stock Option (right to buy)	07/09/2011(1)	01/08/2021	Common Stock	7,990 (2)	$ 0.94	D	Â
Stock Option (right to buy)	09/14/2012(1)	03/13/2022	Common Stock	15,980 (2)	$ 0.94	D	Â
Stock Option (right to buy)	07/06/2013(1)	01/05/2023	Common Stock	15,980 (2)	$ 1.5	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Stewart Stanford John C/O MACROGENICS, INC. 9640 MEDICAL CENTER DRIVE ROCKVILLE, MD 20850	Â	Â	  V P, Clinical Oncology	Â

Signatures

/s/ Lynn Cilinski, attorney-in-fact		10/09/2013
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	12.5% of the shares underlying the option are exercisable beginning on the six month anniversary of the vesting start date, and an additional 6.25% of the shares underlying the option become exercisable on the first day of each three month anniversary thereafter.
(2)	Reflects a 1-for-18.7739 reverse split of our common stock effected on September 26, 2013.
  Remarks: Exhibit 24 - Power of Attorney

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