BLUEBIRD BIO INC

CUSIP: 09609G100 Class: Common Stock

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

Note: Option positions (PUT/CALL) are excluded.

Q2 2019
Shares 155 Value ($000) $20 Avg Close — Range —
Q1 2019
Shares 650 Value ($000) $102 Avg Close — Range —
Q4 2018
Shares 3,337 Value ($000) $331 Avg Close — Range —
Q3 2018
Shares 3,405 Value ($000) $497 Avg Close — Range —
Q2 2018
Shares 1,525 Value ($000) $239 Avg Close — Range —
Q1 2018
Shares 17 Value ($000) $3 Avg Close — Range —
Q4 2017
Shares 7,476 Value ($000) $1,331 Avg Close — Range —