IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q2 2020
Shares 679,401 Value ($000) $3,125 Avg Close — Range —
Q1 2020
Shares 617,689 Value ($000) $2,106 Avg Close — Range —
Q4 2019
Shares 243,150 Value ($000) $1,241 Avg Close — Range —
Q1 2018
Shares 690,445 Value ($000) $7,263 Avg Close — Range —
Q4 2017
Shares 261,942 Value ($000) $1,679 Avg Close — Range —
Q3 2017
Shares 817,616 Value ($000) $6,255 Avg Close — Range —
Q2 2017
Shares 14,400 Value ($000) $102 Avg Close — Range —