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
05/13/20	8-K	Report of unscheduled material events or corporate event	Current Reports	View HTML 0001293971-20-000035.pdf 0001293971-20-000035.rtf 0001293971-20-000035.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
05/18/20	424B5	Form of prospectus disclosing information, facts, events covered in both forms 424B2, 424B3	Registration Statements	View HTML 0001193125-20-144504.pdf 0001193125-20-144504.rtf
05/19/20	424B5	Form of prospectus disclosing information, facts, events covered in both forms 424B2, 424B3	Registration Statements	View HTML 0001193125-20-146188.pdf 0001193125-20-146188.rtf 0001193125-20-146188.xls
05/19/20	8-K	Report of unscheduled material events or corporate event	Current Reports	View HTML 0001193125-20-146192.pdf 0001193125-20-146192.rtf 0001193125-20-146192.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
06/03/20	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0001293971-20-000037.pdf 0001293971-20-000037.rtf 0001293971-20-000037.xls
06/04/20	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001562180-20-004289.pdf 0001562180-20-004289.rtf 0001562180-20-004289.xls
06/04/20	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001562180-20-004288.pdf 0001562180-20-004288.rtf 0001562180-20-004288.xls
06/04/20	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001562180-20-004287.pdf 0001562180-20-004287.rtf 0001562180-20-004287.xls
06/04/20	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001562180-20-004290.pdf 0001562180-20-004290.rtf 0001562180-20-004290.xls
06/04/20	4	Statement of changes in beneficial ownership of securities	3,4,5	View HTML 0001562180-20-004291.pdf 0001562180-20-004291.rtf 0001562180-20-004291.xls