Richard A. Colvin - 01 Nov 2022 Form 4 Insider Report for bluebird bio, Inc. (BLUE)

Role: Chief Medical Officer
Signature: /s/ Katherine Breedis, Attorney-in-Fact
Issuer symbol: BLUE
Transactions as of: 01 Nov 2022
Net transactions value: $0
Form type: 4
Filing time: 03 Nov 2022, 16:19:49 UTC
Previous filing: 25 Aug 2022
Next filing: 08 Nov 2022
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	+30,000	+67%	$0.000000	75,006	01 Nov 2022	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 Options (Right to buy)	Award	$0	+60,000		$0.000000	60,000	01 Nov 2022	Common Stock	60,000	$6.35	Direct	F2

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

Explanation of Responses:

Id	Content
F1	Restricted stock unit awards vest over a four-year period at the rate of 25% on 11/1/2023, 25% on 11/1/2024, 25% on 11/1/2025, and 25% on 11/1/2026.
F2	The stock option vests over a four-year period at the rate of 25% on 11/1/2023 and then in 36 equal monthly installments thereafter.