    <SEC-DOCUMENT>0001193125-24-250921-index.html : 20241105
    <SEC-HEADER>0001193125-24-250921.hdr.sgml : 20241105
    <ACCEPTANCE-DATETIME>20241105060553
    ACCESSION NUMBER:		0001193125-24-250921
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20231231
    FILED AS OF DATE:		20241105
    DATE AS OF CHANGE:		20241105
    EFFECTIVENESS DATE:		20241105

    FILER:

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

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-37566
    		FILM NUMBER:		241425428

    	BUSINESS ADDRESS:
    		STREET 1:		PO BOX 30
    		CITY:			WINCHESTER
    		STATE:			MA
    		ZIP:			01890
    		BUSINESS PHONE:		617-401-9975

    	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>ARS
    <SEQUENCE>1
    <FILENAME>d909589dars.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: d909589dars.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>