<SEC-DOCUMENT>0001193125-23-242769-index.html : 20230927
<SEC-HEADER>0001193125-23-242769.hdr.sgml : 20230927
<ACCEPTANCE-DATETIME>20230926214100
ACCESSION NUMBER:		0001193125-23-242769
CONFORMED SUBMISSION TYPE:	S-1/A
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20230927
DATE AS OF CHANGE:		20230926

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-1/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-274421
		FILM NUMBER:		231281679

	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>
<DOCUMENT>
<TYPE>S-1/A
<SEQUENCE>1
<FILENAME>d515870ds1a.htm
<DESCRIPTION>S-1/A
<TEXT>
Document 1 - file: d515870ds1a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.1
<SEQUENCE>2
<FILENAME>d515870dex11.htm
<DESCRIPTION>EX-1.1
<TEXT>
Document 2 - file: d515870dex11.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.4
<SEQUENCE>3
<FILENAME>d515870dex44.htm
<DESCRIPTION>EX-4.4
<TEXT>
Document 3 - file: d515870dex44.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.5
<SEQUENCE>4
<FILENAME>d515870dex45.htm
<DESCRIPTION>EX-4.5
<TEXT>
Document 4 - file: d515870dex45.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>5
<FILENAME>d515870dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 5 - file: d515870dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-FILING FEES
<SEQUENCE>6
<FILENAME>d515870dexfilingfees.htm
<DESCRIPTION>EX-FILING FEES
<TEXT>
Document 6 - file: d515870dexfilingfees.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g515870g07g07.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g515870g07g07.jpg

</DOCUMENT>
</SEC-DOCUMENT>