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Filing Details

Accession Number:: 0001209191-15-002129
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2015-01-06 16:04:04
Reporting Period:: 2015-01-02

Filing Date:: 2015-01-06
Accepted Time:: 2015-01-06 16:04:04
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1293971	Bluebird Bio Inc.	BLUE	Biological Products, (No Disgnostic Substances) (2836)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1578696	David Davidson	C/O Bluebird Bio, Inc. 150 Second Street Cambridge MA 02141	Chief Medical Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2015-01-02	4,000	$2.09	4,000	No	4	M	Direct
Common Stock	Disposition	2015-01-02	1,239	$88.24	2,761	No	4	S	Direct
Common Stock	Disposition	2015-01-02	486	$88.90	2,275	No	4	S	Direct
Common Stock	Disposition	2015-01-02	918	$90.18	1,357	No	4	S	Direct
Common Stock	Disposition	2015-01-02	269	$91.16	1,088	No	4	S	Direct
Common Stock	Disposition	2015-01-02	998	$92.01	90	No	4	S	Direct
Common Stock	Disposition	2015-01-02	90	$92.96	0	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (right to buy)	Disposition	2015-01-02	4,000	$0.00	4,000	$2.09

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
63,239		2022-04-13	No	4	M	Direct

Footnotes

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 14, 2013.
The range of prices for the transaction reported on this line was $87.53 to $88.52. The average weighted price was $88.2368. 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 $88.54 to $89.51. The average weighted price was $88.9020. 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 $89.62 to $90.62. The average weighted price was $90.1760. 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 $90.63 to $91.61. The average weighted price was $91.1638. 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 $91.66 to $92.50. The average weighted price was $92.0146. 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 $92.92 to $92.99. The average weighted price was $92.9572. 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 February 13, 2013 and in 36 equal monthly installments thereafter.