<SEC-DOCUMENT>0001354457-20-000248-index.html : 20200611
<SEC-HEADER>0001354457-20-000248.hdr.sgml : 20200611
<ACCEPTANCE-DATETIME>20200611095853
ACCESSION NUMBER:		0001354457-20-000248
CONFORMED SUBMISSION TYPE:	CERT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200611
DATE AS OF CHANGE:		20200611
EFFECTIVENESS DATE:		20200611

FILER:

	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

	FILING VALUES:
		FORM TYPE:		CERT
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		20956400

	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>CERT
<SEQUENCE>1
<FILENAME>8A_Cert_GBIO.pdf
<DESCRIPTION>8A CERT
<TEXT>
Document 1 - file: 8A_Cert_GBIO.pdf

</DOCUMENT>
</SEC-DOCUMENT>