Media Contacts

Jess Rowlands

Head of Corporate Communications

(857) 299-6103

jess.rowlands@bluebirdbio.com

Investor Contacts

Courtney O’Leary

Investor Relations

(978) 621-7347

coleary@bluebirdbio.com

SEC Filings

Filing date	Form	Description	Filing Group	View
09/03/15	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001209191-15-069405.pdf 0001209191-15-069405.rtf 0001209191-15-069405.xls
08/21/15	10-Q/A	Amendment to a previously filed 10-Q	Quarterly Filings	View HTML 0001564590-15-007533.pdf 0001564590-15-007533.rtf 0001564590-15-007533.xls
08/21/15	10-Q/A	Amendment to a previously filed 10-Q	Quarterly Filings	View HTML 0001564590-15-007535.pdf 0001564590-15-007535.rtf 0001564590-15-007535.xls
08/19/15	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001209191-15-066881.pdf 0001209191-15-066881.rtf 0001209191-15-066881.xls
08/12/15	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001209191-15-065547.pdf 0001209191-15-065547.rtf 0001209191-15-065547.xls
08/12/15	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001209191-15-065549.pdf 0001209191-15-065549.rtf 0001209191-15-065549.xls
08/12/15	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001209191-15-065548.pdf 0001209191-15-065548.rtf 0001209191-15-065548.xls
08/11/15	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001209191-15-065175.pdf 0001209191-15-065175.rtf 0001209191-15-065175.xls
08/11/15	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001209191-15-065186.pdf 0001209191-15-065186.rtf 0001209191-15-065186.xls
08/07/15	10-Q	Quarterly report which provides a continuing view of a company's financial position	Quarterly Filings	View HTML 0001564590-15-006510.pdf 0001564590-15-006510.rtf 0001564590-15-006510.xls EX-101.INS - XBRL INSTANCE DOCUMENT