<SEC-DOCUMENT>0001193125-25-181891-index.html : 20250815
<SEC-HEADER>0001193125-25-181891.hdr.sgml : 20250815
<ACCEPTANCE-DATETIME>20250815161922
ACCESSION NUMBER:		0001193125-25-181891
CONFORMED SUBMISSION TYPE:	S-3/A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20250815
DATE AS OF CHANGE:		20250815

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SYNLOGIC, INC.
		CENTRAL INDEX KEY:			0001527599
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				261824804
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-289415
		FILM NUMBER:		251224901

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 30
		CITY:			WINCHESTER
		STATE:			MA
		ZIP:			01890
		BUSINESS PHONE:		617-659-2802

	MAIL ADDRESS:	
		STREET 1:		PO BOX 30
		CITY:			WINCHESTER
		STATE:			MA
		ZIP:			01890

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Mirna Therapeutics, Inc.
		DATE OF NAME CHANGE:	20110809
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3/A
<SEQUENCE>1
<FILENAME>d89246ds3a.htm
<DESCRIPTION>S-3/A
<TEXT>
Document 1 - file: d89246ds3a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.9
<SEQUENCE>2
<FILENAME>d89246dex49.htm
<DESCRIPTION>EX-4.9
<TEXT>
Document 2 - file: d89246dex49.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.10
<SEQUENCE>3
<FILENAME>d89246dex410.htm
<DESCRIPTION>EX-4.10
<TEXT>
Document 3 - file: d89246dex410.htm

</DOCUMENT>
</SEC-DOCUMENT>