X0306
4
2018-02-01
0
0001293971
bluebird bio, Inc.
BLUE
0001578696
Davidson David
C/O BLUEBIRD BIO, INC.
60 BINNEY STREET
CAMBRIDGE
MA
02142
0
1
0
0
Chief Medical Officer
Common Stock
2018-02-01
4
A
0
11250
0.00
A
24905
D
Common Stock
2018-02-02
4
M
0
4000
5.5004
A
28905
D
Common Stock
2018-02-02
4
S
0
2600
201.9065
D
26305
D
Common Stock
2018-02-02
4
S
0
1400
203.2032
D
24905
D
Stock Option (right to buy)
205.25
2018-02-01
4
A
0
45000
0.00
A
2028-02-01
Common Stock
45000
45000
D
Stock Option (right to buy)
5.5004
2018-02-02
4
M
0
4000
0.00
D
2023-01-16
Common Stock
4000
67951
D
Restricted stock units for common stock vest over a four-year period at a rate of 25% on 01/04/2019, 25% on 01/04/2020, 25% on 01/04/2021, and 25% on 01/04/2022.
The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2016.
The range of prices for the transaction reported on this line was $201.55 to $202.45. The average weighted price was $201.9065. The reporting person will provide, upon request by the SEC, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
The range of prices for the transaction reported on this line was $202.95 to $203.50. The average weighted price was $203.2032. The reporting person will provide, upon request by the SEC, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
This option vests over a four-year period, at a rate of twenty-five percent (25%) on January 4, 2019, and in 36 equal monthly installments.
This option to purchase shares of our common stock was 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.
/s/ Jason F. Cole, Attorney-in-Fact
2018-02-05