    <SEC-DOCUMENT>0001125345-20-000051-index.html : 20200323
    <SEC-HEADER>0001125345-20-000051.hdr.sgml : 20200323
    <ACCEPTANCE-DATETIME>20200323162736
    ACCESSION NUMBER:		0001125345-20-000051
    CONFORMED SUBMISSION TYPE:	PRE 14A
    PUBLIC DOCUMENT COUNT:		4
    CONFORMED PERIOD OF REPORT:	20200514
    FILED AS OF DATE:		20200323
    DATE AS OF CHANGE:		20200323

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MACROGENICS INC
    		CENTRAL INDEX KEY:			0001125345
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		PRE 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-36112
    		FILM NUMBER:		20735186

    	BUSINESS ADDRESS:
    		STREET 1:		9704 MEDICAL CENTER DRIVE
    		CITY:			Rockville
    		STATE:			MD
    		ZIP:			20850
    		BUSINESS PHONE:		301-251-5172

    	MAIL ADDRESS:
    		STREET 1:		9704 MEDICAL CENTER DRIVE
    		CITY:			ROCKVILLE
    		STATE:			MD
    		ZIP:			20850
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>PRE 14A
    <SEQUENCE>1
    <FILENAME>nextgenprelimproxy2020.htm
    <DESCRIPTION>PRE 14A
    <TEXT>
    Document 1 - file: nextgenprelimproxy2020.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>image1.jpg
    <TEXT>
    Document 2 - file: image1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>proxycard_pagex11.jpg
    <TEXT>
    Document 3 - file: proxycard_pagex11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>proxycard_pagex21.jpg
    <TEXT>
    Document 4 - file: proxycard_pagex21.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>