SEC Form 4 · accession 0001209191-15-069405

bluebird bio, Inc. · BLUE

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

Reporting owner

Director

Period of report

Sep 1, 2015

Accepted (ET)

Sep 3, 2015 · 4:01 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	Sep 1, 2015	M	1,500	$21.43	A	1,500	D
Common Stock^F2	Sep 1, 2015	S	642	$125.166	D	858	D
Common Stock^F3	Sep 1, 2015	S	715	$126.4367	D	143	D
Common Stock^F4	Sep 1, 2015	S	143	$127.1246	D	0	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option (right to buy)^F5	$21.43	Sep 1, 2015	M	1,500	A	—	Jan 8, 2024	Common Stock	1,500	17,000	D

F1This sales reported in the Form 4 were effectd pursuant to a 10b5-1 trading plan adopted by the reporting person on July 8, 2015.
F2The range in prices for the transaction reported on this line was $125.00 to $125.96. The average weighted price was $125.1660. 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 $126.00 to $126.67. The average weighted price was $126.4367. 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 $127.07 to $127.22. The average weighted price was $127.1246. 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.
F5This option vests ratably over three years in annual installments, commencing on January 8, 2014.