<SEC-DOCUMENT>0000899243-21-036601-index.html : 20210920
<SEC-HEADER>0000899243-21-036601.hdr.sgml : 20210920
<ACCEPTANCE-DATETIME>20210920170230
ACCESSION NUMBER:		0000899243-21-036601
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210916
FILED AS OF DATE:		20210920
DATE AS OF CHANGE:		20210920

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mahoney Stephen F.
		CENTRAL INDEX KEY:			0001741389

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38541
		FILM NUMBER:		211263878

	MAIL ADDRESS:	
		STREET 1:		C/O KINIKSA PHARMACEUTICALS, LTD.
		STREET 2:		CLARENDON HOUSE, 2 CHURCH STREET
		CITY:			HAMILTON
		STATE:			D0
		ZIP:			HM11

	FORMER NAME:	
		FORMER CONFORMED NAME:	Mahoney Stephen
		DATE OF NAME CHANGE:	20180521

ISSUER:		

	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

	BUSINESS ADDRESS:	
		STREET 1:		100 TECHNOLOGY SQUARE
		STREET 2:		5TH FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		857-201-2700

	MAIL ADDRESS:	
		STREET 1:		100 TECHNOLOGY SQUARE
		STREET 2:		5TH FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
Document 1 - file: doc4.html

Document 1 - RAW XML: doc4.xml

</DOCUMENT>
</SEC-DOCUMENT>