<SEC-DOCUMENT>0001193125-17-309912-index.html : 20171013
<SEC-HEADER>0001193125-17-309912.hdr.sgml : 20171013
<ACCEPTANCE-DATETIME>20171013164144
ACCESSION NUMBER:		0001193125-17-309912
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		12
FILED AS OF DATE:		20171013
DATE AS OF CHANGE:		20171013

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYNLOGIC, INC.
		CENTRAL INDEX KEY:			0001527599
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				261824804
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-220948
		FILM NUMBER:		171136900

	BUSINESS ADDRESS:	
		STREET 1:		200 SIDNEY STREET
		STREET 2:		SUITE 320
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		617-401-9975

	MAIL ADDRESS:	
		STREET 1:		200 SIDNEY STREET
		STREET 2:		SUITE 320
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Mirna Therapeutics, Inc.
		DATE OF NAME CHANGE:	20110809
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3
<SEQUENCE>1
<FILENAME>d471035ds3.htm
<DESCRIPTION>S-3
<TEXT>
Document 1 - file: d471035ds3.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-1.2 <SEQUENCE>2 <FILENAME>d471035dex12.htm <DESCRIPTION>EX-1.2 <TEXT> Document 2 - file: d471035dex12.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-4.5 <SEQUENCE>3 <FILENAME>d471035dex45.htm <DESCRIPTION>EX-4.5 <TEXT> Document 3 - file: d471035dex45.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-4.9 <SEQUENCE>4 <FILENAME>d471035dex49.htm <DESCRIPTION>EX-4.9 <TEXT> Document 4 - file: d471035dex49.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-4.10 <SEQUENCE>5 <FILENAME>d471035dex410.htm <DESCRIPTION>EX-4.10 <TEXT> Document 5 - file: d471035dex410.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-5.1 <SEQUENCE>6 <FILENAME>d471035dex51.htm <DESCRIPTION>EX-5.1 <TEXT> Document 6 - file: d471035dex51.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-23.1 <SEQUENCE>7 <FILENAME>d471035dex231.htm <DESCRIPTION>EX-23.1 <TEXT> Document 7 - file: d471035dex231.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-23.2 <SEQUENCE>8 <FILENAME>d471035dex232.htm <DESCRIPTION>EX-23.2 <TEXT> Document 8 - file: d471035dex232.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g471035g91g40.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g471035g91g40.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>g471035snap0013.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: g471035snap0013.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>g471035snap0014.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: g471035snap0014.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>g471035snap0015.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: g471035snap0015.jpg
</DOCUMENT> </SEC-DOCUMENT>