BLUEBIRD BIO INC

CUSIP: 09609G100 Class: Common Stock

Spark Investment Management LLC's Holding History (CIK: 0001554871)

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

Q3 2015
Shares 61,300 Value ($000) $5,243 Avg Close — Range —
Q2 2015
Shares 36,000 Value ($000) $6,059 Avg Close — Range —
Q3 2013
Shares 15,000 Value ($000) $406 Avg Close — Range —