Andrew Obenshain - 02 Aug 2021 Form 4 Insider Report for bluebird bio, Inc. (BLUE)

Role: President of SGD
Signature: /s/ Helen C. Fu, Attorney-in-Fact
Issuer symbol: BLUE
Transactions as of: 02 Aug 2021
Net transactions value: $0
Form type: 4
Filing time: 04 Aug 2021, 16:52:47 UTC
Previous filing: 08 Jun 2021
Next filing: 17 Nov 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BLUE	Common Stock	Award	$0	+100,000	+253%	$0.000000	139,597	02 Aug 2021	Direct	F1

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	+200,000		$0.000000	200,000	02 Aug 2021	Common Stock	200,000	$25.60	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Subject to certain performance criteria, this restricted stock unit award shall vest over a 4-year period at the rate of 25% on each of 8/2/2022, 8/2/2023, 8/2/2024 and 8/2/2025.
F2	Subject to certain performance criteria, this stock option shall vest over a 4-year period at the rate of 25% on 8/2/2022 and then in 36 equal monthly installments thereafter.