BLUEBIRD BIO INC

CUSIP: 09609G100 Class: Common Stock

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q4 2020
Shares 124,594 Value ($000) $5,391 Avg Close — Range —
Q3 2020
Shares 82,903 Value ($000) $4,473 Avg Close — Range —
Q2 2020
Shares 449,846 Value ($000) $27,459 Avg Close — Range —
Q1 2020
Shares 179,128 Value ($000) $8,233 Avg Close — Range —
Q4 2019
Shares 143,650 Value ($000) $12,605 Avg Close — Range —
Q3 2019
Shares 43,534 Value ($000) $3,997 Avg Close — Range —
Q2 2019
Shares 107,396 Value ($000) $13,661 Avg Close — Range —
Q1 2019
Shares 147,158 Value ($000) $23,152 Avg Close — Range —
Q4 2018
Shares 149,302 Value ($000) $14,811 Avg Close — Range —
Q3 2018
Shares 69,015 Value ($000) $10,076 Avg Close — Range —
Q2 2018
Shares 94,846 Value ($000) $14,886 Avg Close — Range —
Q1 2018
Shares 51,481 Value ($000) $8,790 Avg Close — Range —
Q4 2017
Shares 97,101 Value ($000) $17,294 Avg Close — Range —
Q3 2017
Shares 154,389 Value ($000) $21,205 Avg Close — Range —
Q2 2017
Shares 70,548 Value ($000) $7,411 Avg Close — Range —
Q1 2017
Shares 57,184 Value ($000) $5,198 Avg Close — Range —
Q4 2016
Shares 201,454 Value ($000) $12,430 Avg Close — Range —
Q3 2016
Shares 104,998 Value ($000) $7,117 Avg Close — Range —
Q2 2016
Shares 61,103 Value ($000) $2,645 Avg Close — Range —
Q1 2016
Shares 92,693 Value ($000) $3,939 Avg Close — Range —
Q4 2015
Shares 146,707 Value ($000) $9,422 Avg Close — Range —
Q3 2015
Shares 13,357 Value ($000) $1,143 Avg Close — Range —
Q2 2015
Shares 22,052 Value ($000) $3,713 Avg Close — Range —
Q1 2015
Shares 250,065 Value ($000) $30,200 Avg Close — Range —
Q4 2014
Shares 477,443 Value ($000) $43,791 Avg Close — Range —