SEC Form 4 · accession 0001209191-15-084223

bluebird bio, Inc. · BLUE

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

Reporting owner

Officer — President and CEO · Director

Period of report

Dec 7, 2015

Accepted (ET)

Dec 9, 2015 · 4:02 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	Nature of ownership
Common Stock	Dec 7, 2015	M	32,391	$2.0864	A	278,912	D
Common Stock	Dec 7, 2015	M	28,994	$2.0864	A	307,906	D
Common Stock	Dec 7, 2015	M	5,335	$5.5004	A	313,241	D
Common Stock	Dec 8, 2015	P	4,901	$51.2473	A	12,405	I	Nick Leschly 2001 Trust
Common Stock	Dec 8, 2015	P	4,781	$52.2576	A	17,186	I	Nick Leschly 2001 Trust

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option (right to buy)^F1	$5.5004	Dec 7, 2015	M	5,335	D	—	Jan 16, 2023	Common Stock	5,335	259,934	D
Stock Option (right to buy)^F2	$2.0864	Dec 7, 2015	M	32,391	D	—	Jul 13, 2021	Common Stock	32,391	0	D
Stock Option (right to buy)^F3	$2.0864	Dec 7, 2015	M	28,994	D	—	Jun 4, 2022	Common Stock	28,994	9,611	D

F1This option to purchase shares of our common stock granted on January 16, 2013 with performance-based vesting criteria that were met as of January 1, 2013. The shares underlying these options vested as follows: 25% vested on January 1, 2014, with the remainder of the shares vesting in equal monthly installments over the following three years.
F2This option vests over a four-year period, at a rate of twenty-five percent (25%) on April 15, 2012 and in 36 equal monthly installments thereafter
F3This option vests over a four-year period, at a rate of twenty-five percent (25%) on May 1, 2013 and in 36 equal monthly installments thereafter.