<SEC-DOCUMENT>0001193125-18-136540-index.html : 20180427
<SEC-HEADER>0001193125-18-136540.hdr.sgml : 20180427
<ACCEPTANCE-DATETIME>20180427061203
ACCESSION NUMBER:		0001193125-18-136540
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		7
CONFORMED PERIOD OF REPORT:	20180613
FILED AS OF DATE:		20180427
DATE AS OF CHANGE:		20180427
EFFECTIVENESS DATE:		20180427

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:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37566
		FILM NUMBER:		18780877

	BUSINESS ADDRESS:	
		STREET 1:		301 BINNEY STREET
		STREET 2:		SUITE 402
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		617-401-9975

	MAIL ADDRESS:	
		STREET 1:		301 BINNEY STREET
		STREET 2:		SUITE 402
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Mirna Therapeutics, Inc.
		DATE OF NAME CHANGE:	20110809
</SEC-HEADER>
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Document 1 - file: d570050ddef14a.htm

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Document 2 - file: g570050g18u35.jpg

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<DESCRIPTION>GRAPHIC
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Document 3 - file: g570050g34n48.jpg

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<FILENAME>g570050g93w91.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g570050g93w91.jpg

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<FILENAME>g570050img01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g570050img01.jpg

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<FILENAME>g570050img02.jpg
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<TEXT>
Document 6 - file: g570050img02.jpg

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<SEQUENCE>7
<FILENAME>g570050img03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g570050img03.jpg

</DOCUMENT>
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