Christopher Krawtschuk - Mar 1, 2024 Form 4 Insider Report for bluebird bio, Inc. (BLUE)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BLUE	Stock Option (right to buy)	Award	$0	+199K		$0.00	199K	Mar 1, 2024	Common Stock	199K	$1.56	Direct	F1

Showing 1 to 1 of 1 entries

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	This stock option will vest over a four-year period at the rate of 25% on the first anniversary of March 1, 2024, and then in equal monthly installments for the remaining 36 months.