    <SEC-DOCUMENT>0001193125-23-115309-index.html : 20230425
    <SEC-HEADER>0001193125-23-115309.hdr.sgml : 20230425
    <ACCEPTANCE-DATETIME>20230425161007
    ACCESSION NUMBER:		0001193125-23-115309
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20221231
    FILED AS OF DATE:		20230425
    DATE AS OF CHANGE:		20230425
    EFFECTIVENESS DATE:		20230425

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Cogent Biosciences, Inc.
    		CENTRAL INDEX KEY:			0001622229
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				465308248
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-38443
    		FILM NUMBER:		23844969

    	BUSINESS ADDRESS:
    		STREET 1:		275 WYMAN STREET
    		STREET 2:		3RD FLOOR
    		CITY:			WALTHAM
    		STATE:			MA
    		ZIP:			02451
    		BUSINESS PHONE:		617-945-5576

    	MAIL ADDRESS:
    		STREET 1:		275 WYMAN STREET
    		STREET 2:		3RD FLOOR
    		CITY:			WALTHAM
    		STATE:			MA
    		ZIP:			02451

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Unum Therapeutics Inc.
    		DATE OF NAME CHANGE:	20180402

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Unum Therapeutics, Inc.
    		DATE OF NAME CHANGE:	20141014
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>d501586dars.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: d501586dars.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>