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Filing Details

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
1629278	J Thomas Klima	C/O Bluebird Bio, Inc. 455 Grand Union Boulevard Somerville MA 02145	See Remarks	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2024-09-30	50,000	$0.00	171,006	No	4	A	Direct
Common Stock	Disposition	2024-09-30	1,006	$0.53	170,000	No	4	S	Direct

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

Footnotes

These restricted stock units for common stock vest over a four-year period at the rate of 25% on each of March 1, 2025, March 1, 2026, March 1, 2027 and March 1, 2028. These restricted stock units were approved during the Issuer's regular annual review cycle for 2024 with a delayed date of issuance.
Shares were sold to cover tax withholding obligations incurred in connection with the vesting of Restricted Stock Units.
The range in prices for the transaction reported on this line was $0.5252 to $0.5268. The average weighted price was $0.5257. 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.