<SEC-DOCUMENT>0000000000-18-015224-index.html : 20180719
<SEC-HEADER>0000000000-18-015224.hdr.sgml : 20180719
<ACCEPTANCE-DATETIME>20180516152122
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0000000000-18-015224
CONFORMED SUBMISSION TYPE:	UPLOAD
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180516

FILED FOR:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Magenta Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001690585
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		UPLOAD

	BUSINESS ADDRESS:	
		STREET 1:		50 HAMPSHIRE STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		857-201-2700

	MAIL ADDRESS:	
		STREET 1:		50 HAMPSHIRE STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
</SEC-HEADER>
<DOCUMENT>
<TYPE>LETTER
<SEQUENCE>1
<FILENAME>filename1.pdf
<TEXT>
Document 1 - file: filename1.pdf

</DOCUMENT>
</SEC-DOCUMENT>