IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2023
Shares 1,954,413 Value ($000) $57,948 Avg Close — Range —
Q3 2023
Shares 13,258,997 Value ($000) $210,420 Avg Close — Range —
Q2 2023
Shares 9,752,899 Value ($000) $184,037 Avg Close — Range —
Q1 2023
Shares 9,864,785 Value ($000) $37,881 Avg Close — Range —
Q4 2022
Shares 9,226,708 Value ($000) $45,764 Avg Close — Range —
Q3 2022
Shares 10,007,505 Value ($000) $47,835 Avg Close — Range —
Q2 2022
Shares 10,717,085 Value ($000) $48,227 Avg Close — Range —
Q1 2022
Shares 13,063,484 Value ($000) $62,182 Avg Close — Range —
Q4 2021
Shares 13,902,498 Value ($000) $103,157 Avg Close — Range —
Q3 2021
Shares 14,068,108 Value ($000) $79,765 Avg Close — Range —
Q2 2021
Shares 14,592,570 Value ($000) $96,166 Avg Close — Range —
Q1 2021
Shares 19,003,480 Value ($000) $153,928 Avg Close — Range —
Q4 2020
Shares 22,084,103 Value ($000) $142,442 Avg Close — Range —
Q3 2020
Shares 23,080,128 Value ($000) $83,089 Avg Close — Range —
Q2 2020
Shares 23,311,638 Value ($000) $107,233 Avg Close — Range —
Q1 2020
Shares 19,151,382 Value ($000) $65,305 Avg Close — Range —
Q4 2019
Shares 41,707 Value ($000) $213 Avg Close — Range —
Q2 2019
Shares 194,701 Value ($000) $423 Avg Close — Range —
Q1 2019
Shares 41,710 Value ($000) $113 Avg Close — Range —
Q3 2018
Shares 19,495 Value ($000) $185 Avg Close — Range —
Q2 2018
Shares 247,496 Value ($000) $2,408 Avg Close — Range —
Q1 2018
Shares 202,738 Value ($000) $2,133 Avg Close — Range —
Q4 2017
Shares 406,661 Value ($000) $2,607 Avg Close — Range —
Q3 2017
Shares 311,763 Value ($000) $2,385 Avg Close — Range —
Q3 2016
Shares 182,591 Value ($000) $489 Avg Close — Range —
Q2 2016
Shares 293,899 Value ($000) $905 Avg Close — Range —
Q1 2016
Shares 279,713 Value ($000) $2,383 Avg Close — Range —
Q4 2015
Shares 219,386 Value ($000) $2,977 Avg Close — Range —
Q3 2014
Shares 633,248 Value ($000) $6,706 Avg Close — Range —
Q2 2014
Shares 1,307,500 Value ($000) $15,495 Avg Close — Range —
Q1 2014
Shares 3,126,551 Value ($000) $46,679 Avg Close — Range —
Q4 2013
Shares 3,180,697 Value ($000) $46,661 Avg Close — Range —
Q3 2013
Shares 3,357,517 Value ($000) $57,145 Avg Close — Range —
Q2 2013
Shares 3,528,192 Value ($000) $58,533 Avg Close — Range —