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
06/24/13	S-8	Securities offered to employees pursuant to employee benefit plans	Registration Statements	View HTML 0001193125-13-269157.pdf 0001193125-13-269157.rtf 0001193125-13-269157.xls
06/24/13	8-K	Report of unscheduled material events or corporate event	Current Reports	View HTML 0001193125-13-269188.pdf 0001193125-13-269188.rtf 0001193125-13-269188.xls
06/24/13	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001181431-13-036450.pdf 0001181431-13-036450.rtf 0001181431-13-036450.xls
06/19/13	424B4	Form of prospectus disclosing information facts events covered in both forms 424B1 424B3	Registration Statements	View HTML 0001193125-13-263506.pdf 0001193125-13-263506.rtf 0001193125-13-263506.xls
06/18/13	CT ORDER	CT ORDER	Other	View HTML 9999999997-13-010841.pdf
06/18/13	3	Initial filing by director officer or owner of more than ten percent.	3,4,5	View HTML 0001209191-13-032743.pdf 0001209191-13-032743.rtf 0001209191-13-032743.xls
06/18/13	3	Initial filing by director officer or owner of more than ten percent.	3,4,5	View HTML 0001209191-13-032745.pdf 0001209191-13-032745.rtf 0001209191-13-032745.xls
06/18/13	3	Initial filing by director officer or owner of more than ten percent.	3,4,5	View HTML 0001209191-13-032748.pdf 0001209191-13-032748.rtf 0001209191-13-032748.xls
06/18/13	3	Initial filing by director officer or owner of more than ten percent.	3,4,5	View HTML 0001209191-13-032752.pdf 0001209191-13-032752.rtf 0001209191-13-032752.xls
06/18/13	3	Initial filing by director officer or owner of more than ten percent.	3,4,5	View HTML 0001209191-13-032761.pdf 0001209191-13-032761.rtf 0001209191-13-032761.xls