Joseph Vittiglio - Feb 1, 2023 Form 4 Insider Report for bluebird bio, Inc. (BLUE)

Signature
/s/ Joseph Vittiglio
Stock symbol
BLUE
Transactions as of
Feb 1, 2023
Transactions value $
$0
Form type
4
Date filed
2/3/2023, 03:05 PM
Previous filing
Jan 9, 2023
Next filing
Feb 6, 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction BLUE Common Stock Award $0 +50K $0.00 50K Feb 1, 2023 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 +100K $0.00 100K Feb 1, 2023 Common Stock 100K $6.38 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 2/1/2024, 25% on 2/1/2025, 25% on 2/1/2026, and 25% on 2/1/2027.
F2 The stock option vests over a four-year period at the rate of 25% on 2/1/2024 and then in 36 equal monthly installments thereafter.