BLUEBIRD BIO INC

CUSIP: 09609G100 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q1 2019
Shares 4,368 Value ($000) $687 Avg Close — Range —
Q4 2015
Shares 16,297 Value ($000) $1,047 Avg Close — Range —
Q3 2015
Shares 16,458 Value ($000) $1,408 Avg Close — Range —
Q2 2015
Shares 16,458 Value ($000) $2,771 Avg Close — Range —
Q1 2015
Shares 6,975 Value ($000) $842 Avg Close — Range —
Q4 2014
Shares 4,427 Value ($000) $406 Avg Close — Range —