Attached files

file filename
EX-31.2 - EX-31.2 - bluebird bio, Inc.blue-20201231xexx312.htm
EX-31.1 - EX-31.1 - bluebird bio, Inc.blue-20201231xexx311.htm
EX-23.1 - EX-23.1 - bluebird bio, Inc.blue-20201231xexx231.htm
EX-21.1 - EX-21.1 - bluebird bio, Inc.blue-20201231xexx211.htm
EX-10.28 - EX-10.28 - bluebird bio, Inc.blue-20201231xexx1028.htm
EX-4.2 - EX-4.2 - bluebird bio, Inc.blue-20201231xexx42.htm
EX-3.2 - EX-3.2 - bluebird bio, Inc.blue-20201231xexx32.htm
10-K - 10-K - bluebird bio, Inc.blue-20201231.htm

Exhibit 32.1
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report on Form 10-K of bluebird bio, Inc. (the “Company”) for the year ended December 31, 2020 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company hereby certifies, pursuant to 18 U.S.C. Section 1350, that to his or her knowledge:
(1)the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
Date: February 23, 2021By:/s/ Nick Leschly
Nick Leschly
President and Chief Executive Officer
(Principal Executive Officer and Duly Authorized Officer)
Date: February 23, 2021By:/s/ Chip Baird
Chip Baird
Chief Financial Officer
(Principal Financial Officer, Principal Accounting Officer, and Duly Authorized Officer)