BLUEBIRD BIO INC

CUSIP: 09609G100 Class: Common Stock

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q3 2019
Shares 2,326 Value ($000) $214 Avg Close — Range —
Q2 2019
Shares 2,436 Value ($000) $310 Avg Close — Range —
Q1 2019
Shares 2,557 Value ($000) $402 Avg Close — Range —
Q4 2018
Shares 2,047 Value ($000) $203 Avg Close — Range —
Q3 2018
Shares 1,862 Value ($000) $272 Avg Close — Range —
Q2 2015
Shares 1,718 Value ($000) $289 Avg Close — Range —
Q1 2015
Shares 1,740 Value ($000) $210 Avg Close — Range —