IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

GREAT WEST LIFE ASSURANCE CO /CAN/'s Holding History (CIK: 0001046192)

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

Q4 2023
Shares 21,781 Value ($000) $1 Avg Close — Range —
Q3 2023
Shares 54,518 Value ($000) $1 Avg Close — Range —
Q2 2023
Shares 8,493 Value ($000) $0 Avg Close — Range —
Q1 2023
Shares 39,635 Value ($000) $0 Avg Close — Range —
Q4 2022
Shares 10,039 Value ($000) $0 Avg Close — Range —
Q3 2022
Shares 10,039 Value ($000) $48 Avg Close — Range —
Q2 2022
Shares 10,039 Value ($000) $45 Avg Close — Range —
Q1 2022
Shares 10,039 Value ($000) $51 Avg Close — Range —
Q4 2021
Shares 10,039 Value ($000) $74 Avg Close — Range —
Q3 2021
Shares 10,039 Value ($000) $57 Avg Close — Range —
Q2 2021
Shares 10,039 Value ($000) $66 Avg Close — Range —
Q1 2021
Shares 13,402 Value ($000) $108 Avg Close — Range —
Q4 2020
Shares 9,603 Value ($000) $62 Avg Close — Range —
Q3 2020
Shares 9,603 Value ($000) $35 Avg Close — Range —
Q2 2020
Shares 9,603 Value ($000) $44 Avg Close — Range —
Q1 2020
Shares 8,366 Value ($000) $29 Avg Close — Range —
Q4 2019
Shares 8,366 Value ($000) $42 Avg Close — Range —
Q2 2019
Shares 15,767 Value ($000) $34 Avg Close — Range —
Q1 2019
Shares 15,767 Value ($000) $42 Avg Close — Range —
Q4 2018
Shares 15,767 Value ($000) $73 Avg Close — Range —
Q3 2018
Shares 15,767 Value ($000) $149 Avg Close — Range —
Q2 2018
Shares 15,767 Value ($000) $153 Avg Close — Range —
Q1 2018
Shares 9,004 Value ($000) $95 Avg Close — Range —
Q4 2017
Shares 9,004 Value ($000) $58 Avg Close — Range —
Q3 2017
Shares 9,004 Value ($000) $67 Avg Close — Range —
Q2 2017
Shares 9,004 Value ($000) $64 Avg Close — Range —
Q1 2017
Shares 9,004 Value ($000) $35 Avg Close — Range —
Q4 2016
Shares 9,004 Value ($000) $18 Avg Close — Range —
Q3 2016
Shares 9,004 Value ($000) $24 Avg Close — Range —
Q2 2016
Shares 9,004 Value ($000) $28 Avg Close — Range —
Q1 2016
Shares 9,004 Value ($000) $77 Avg Close — Range —
Q4 2015
Shares 9,004 Value ($000) $122 Avg Close — Range —
Q3 2015
Shares 9,004 Value ($000) $87 Avg Close — Range —
Q2 2015
Shares 9,145 Value ($000) $131 Avg Close — Range —
Q1 2015
Shares 3,412 Value ($000) $30 Avg Close — Range —
Q4 2014
Shares 3,271 Value ($000) $20 Avg Close — Range —
Q3 2014
Shares 3,515 Value ($000) $38 Avg Close — Range —
Q2 2014
Shares 3,515 Value ($000) $42 Avg Close — Range —
Q1 2014
Shares 3,515 Value ($000) $52 Avg Close — Range —
Q4 2013
Shares 3,271 Value ($000) $48 Avg Close — Range —