BLUEBIRD BIO INC

CUSIP: 09609G100 Class: Common Stock

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q4 2017
Shares 1,363 Value ($000) $243 Avg Close — Range —
Q2 2017
Shares 16,785 Value ($000) $1,763 Avg Close — Range —
Q1 2017
Shares 48,810 Value ($000) $4,437 Avg Close — Range —
Q4 2016
Shares 24,984 Value ($000) $1,542 Avg Close — Range —
Q3 2015
Shares 4,964 Value ($000) $425 Avg Close — Range —
Q2 2015
Shares 47,709 Value ($000) $8,033 Avg Close — Range —
Q1 2015
Shares 84,510 Value ($000) $10,206 Avg Close — Range —
Q4 2014
Shares 68,033 Value ($000) $6,240 Avg Close — Range —
Q3 2014
Shares 77,132 Value ($000) $2,767 Avg Close — Range —
Q2 2014
Shares 83,304 Value ($000) $3,213 Avg Close — Range —
Q1 2014
Shares 143,414 Value ($000) $3,261 Avg Close — Range —
Q3 2013
Shares 11,904 Value ($000) $321 Avg Close — Range —