SEC Form 4 · accession 0001209191-18-061735

bluebird bio, Inc. · BLUE

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

A later amendment supersedes this filing — read the amendment. The figures below are kept as originally reported (version chain, not an overwrite).

Reporting owner

Officer — Chief Operating Officer

Period of report

Dec 6, 2018

Accepted (ET)

Dec 10, 2018 · 4:11 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001293971

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Common Stock^F2	Dec 6, 2018	S	475	$104.1333	D	15,135	D
Common Stock^F3	Dec 6, 2018	S	1,100	$106.1123	D	14,035	D
Common Stock^F4	Dec 6, 2018	S	300	$106.7042	D	13,735	D

No Table II lines on this filing.

F1The sales reported in this Form 4 were effected pursuant to a 10b5-1 trading plan adopted by the reporting person on December 18, 2017.
F2The range in prices for the transaction reported on this line was $104.01 to $104.29. The average weighted price was $104.1333. The reporting person will provide, upon request by the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price.
F3The range in prices for the transaction reported on this line was $105.50 to $106.49. The average weighted price was $106.1123. The reporting person will provide, upon request by the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price.
F4The range in prices for the transaction reported on this line was $106.51 to $107.42. The average weighted price was $106.7042. The reporting person will provide, upon request by the SEC, the issuer or security holder of the issuer, full information regarding the number of shares sold at each separate price.