<SEC-DOCUMENT>0001193125-20-215596-index.html : 20200811
<SEC-HEADER>0001193125-20-215596.hdr.sgml : 20200811
<ACCEPTANCE-DATETIME>20200811070429
ACCESSION NUMBER:		0001193125-20-215596
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20200811
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20200811
DATE AS OF CHANGE:		20200811

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39319
		FILM NUMBER:		201091032

	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>8-K
<SEQUENCE>1
<FILENAME>d42225d8k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: d42225d8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d42225dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: d42225dex991.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g42225ex991dsp5.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g42225ex991dsp5.jpg

</DOCUMENT>
</SEC-DOCUMENT>