<SEC-DOCUMENT>0001415889-21-001240-index.html : 20210303
<SEC-HEADER>0001415889-21-001240.hdr.sgml : 20210303
<ACCEPTANCE-DATETIME>20210303160530
ACCESSION NUMBER:		0001415889-21-001240
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210301
FILED AS OF DATE:		20210303
DATE AS OF CHANGE:		20210303

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Cooper Ronald Harold Wilfred
		CENTRAL INDEX KEY:			0001676880

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		21708903

	MAIL ADDRESS:	
		STREET 1:		C/O GENOCEA BIOSCIENCES, INC.
		STREET 2:		100 ACORN PARK DRIVE, 5TH FLOOR
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02140

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Generation Bio Co.
		CENTRAL INDEX KEY:			0001733294
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				814301281
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		301 BINNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		857-529-5908

	MAIL ADDRESS:	
		STREET 1:		301 BINNEY STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>form3-03032021_040301.xml
<TEXT>
Document 1 - file: form3-03032021_040301.html

Document 1 - RAW XML: form3-03032021_040301.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex24-03032021_040302.htm
<TEXT>
Document 2 - file: ex24-03032021_040302.htm

</DOCUMENT>
</SEC-DOCUMENT>