Thomas J. Klima - Jun 1, 2021 Form 4 Insider Report for bluebird bio, Inc. (BLUE)

Signature
/s/ Helen C. Fu, Attorney-in-Fact
Stock symbol
BLUE
Transactions as of
Jun 1, 2021
Transactions value $
$777,750
Form type
4
Date filed
6/2/2021, 04:16 PM
Previous filing
May 10, 2021
Next filing
Nov 16, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction BLUE Common Stock Award $778K +25K $31.11 25K Jun 1, 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 +50K $0.00 50K Jun 1, 2021 Common Stock 50K $0.00 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 06/01/2022, 25% on 06/01/2023, 25% on 06/01/2024, and 25% on 06/01/2025.
F2 This stock option vests over a four-year period at the rate of 25% on 5/10/2022, and then in 36 equal monthly installments thereafter.