IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

FIRST MANHATTAN CO. LLC.'s Holding History (CIK: 0000728083)

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

Q4 2023
Shares 7,500 Value ($000) $222 Avg Close — Range —
Q3 2023
Shares 283,400 Value ($000) $4,498 Avg Close — Range —
Q2 2023
Shares 1,707,500 Value ($000) $32,221 Avg Close — Range —
Q1 2023
Shares 7,500 Value ($000) $29 Avg Close — Range —
Q4 2022
Shares 7,500 Value ($000) $37 Avg Close — Range —
Q3 2022
Shares 7,500 Value ($000) $35 Avg Close — Range —
Q2 2022
Shares 7,500 Value ($000) $33 Avg Close — Range —
Q1 2022
Shares 7,500 Value ($000) $35 Avg Close — Range —
Q4 2021
Shares 959,432 Value ($000) $7,118 Avg Close — Range —
Q3 2021
Shares 7,546 Value ($000) $42 Avg Close — Range —
Q2 2021
Shares 7,546 Value ($000) $49 Avg Close — Range —
Q1 2021
Shares 7,546 Value ($000) $61 Avg Close — Range —
Q4 2020
Shares 7,546 Value ($000) $48 Avg Close — Range —
Q3 2020
Shares 7,590 Value ($000) $27 Avg Close — Range —
Q2 2020
Shares 7,546 Value ($000) $34 Avg Close — Range —
Q1 2020
Shares 7,546 Value ($000) $25 Avg Close — Range —
Q4 2019
Shares 7,546 Value ($000) $38 Avg Close — Range —
Q3 2019
Shares 7,546 Value ($000) $18 Avg Close — Range —
Q2 2019
Shares 7,546 Value ($000) $16 Avg Close — Range —
Q1 2019
Shares 9,046 Value ($000) $24 Avg Close — Range —
Q4 2018
Shares 9,046 Value ($000) $43 Avg Close — Range —
Q3 2018
Shares 7,546 Value ($000) $71 Avg Close — Range —
Q2 2018
Shares 3,046 Value ($000) $29 Avg Close — Range —
Q1 2018
Shares 3,046 Value ($000) $32 Avg Close — Range —
Q4 2017
Shares 3,397 Value ($000) $21 Avg Close — Range —
Q3 2017
Shares 3,046 Value ($000) $23 Avg Close — Range —
Q2 2017
Shares 3,046 Value ($000) $21 Avg Close — Range —
Q1 2017
Shares 3,046 Value ($000) $11 Avg Close — Range —
Q4 2016
Shares 3,046 Value ($000) $6 Avg Close — Range —
Q3 2016
Shares 3,046 Value ($000) $8 Avg Close — Range —
Q2 2016
Shares 3,046 Value ($000) $9 Avg Close — Range —
Q1 2016
Shares 3,046 Value ($000) $25 Avg Close — Range —
Q4 2015
Shares 3,046 Value ($000) $41 Avg Close — Range —
Q3 2015
Shares 3,046 Value ($000) $29 Avg Close — Range —
Q2 2015
Shares 3,046 Value ($000) $43 Avg Close — Range —
Q1 2015
Shares 3,046 Value ($000) $27 Avg Close — Range —
Q4 2014
Shares 3,046 Value ($000) $18 Avg Close — Range —
Q3 2014
Shares 4,046 Value ($000) $42 Avg Close — Range —
Q2 2014
Shares 4,046 Value ($000) $47 Avg Close — Range —
Q1 2014
Shares 3,546 Value ($000) $52 Avg Close — Range —
Q4 2013
Shares 3,546 Value ($000) $52 Avg Close — Range —
Q3 2013
Shares 1,546 Value ($000) $26 Avg Close — Range —
Q2 2013
Shares 1,546 Value ($000) $29 Avg Close — Range —