Form Type: 4

SEC EDGAR Link
Accession Number:0001562180-21-003923
Date:2021-06-01
Issuer: BLUEBIRD BIO, INC. (BLUE)
Original Submission Date:

Reporting Person:

KLIMA THOMAS J
C/O BLUEBIRD BIO, INC.
60 BINNEY STREET CAMBRIDGE, MA 02142

Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
Title of SecurityTransaction Date2a. Deemed Execution Date Transaction CodeSharesAcquired or DisposedPrice per share 5. Amount of Securities Beneficially Owned Following Reported Transaction 6. Ownership Form Direct or IndirectNature of Indirect Ownership
COMMON STOCK 2021-06-01 A 25,000 a $31.11 25,000 direct
Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, convertible securities
Title of Derivative Security Conversion or Exercise Price of Derivative Security Transaction Date Deemed Execution Date Transaction Code Number of Derivative Securities Acquired (A) or Disposed of (D) Date ExercisableExpiration Date Title and Amount of Securities Underlying Derivative Security Price of Derivative Security Number of derivative Securities Beneficially Owned Following Reported Transaction(s) Ownership Form: Direct (D) or Indirect (I) Nature of Indirect Beneficial Ownership
STOCK OPTION (RIGHT TO BUY) 0.0 2021-06-01 deemed execution date A 50,000 (a) 2031-06-01 common stock 50,000 $0.00 50,000 direct
Footnotes
IDfootnote
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.

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