SEC Form 4 · accession 0001209191-17-038532

bluebird bio, Inc. · BLUE

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

Reporting owner

Officer — Chief Legal Officer

Period of report

Jun 6, 2017

Accepted (ET)

Jun 8, 2017 · 4:19 pm EDT

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	Jun 6, 2017	M	15,070	$22.53	A	30,871	D
Common Stock	Jun 6, 2017	M	1,740	$50.51	A	32,611	D
Comon Stock^F2	Jun 6, 2017	S	16,810	$100.2204	D	15,801	D
Common Stock	Jun 7, 2017	M	435	$50.51	A	16,236	D
Common Stock	Jun 7, 2017	S	435	$100.05	D	15,801	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option (right to buy)^F3	$22.53	Jun 6, 2017	M	15,070	D	—	Feb 10, 2024	Common Stock	15,070	36,812	D
Stock Option (right to buy)^F4	$50.51	Jun 6, 2017	M	1,740	D	—	Mar 1, 2026	Common Stock	1,740	13,935	D
Stock Option (right to buy)^F4	$50.51	Jun 7, 2017	M	435	D	—	Mar 1, 2026	Common Stock	435	13,500	D

F1The sales reported in the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 15, 2016
F2The range in prices for the transaction reported on this line was $100.00 to $100.70. The average weighted price was $100.2204. 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.
F3This option vests over a four-year period, at a rate of twenty-five percent (25%) on March 6, 2015 and in 36 equal monthly installments thereafter.
F4This option vests over a four-year period, at a rate of twenty-five percent (25%) on January 4, 2017, and in 36 equal monthly installments.