IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q4 2023
Shares 1,088,213 Value ($000) $32 Avg Close — Range —
Q3 2023
Shares 3,906,370 Value ($000) $62 Avg Close — Range —
Q2 2023
Shares 2,322,261 Value ($000) $44 Avg Close — Range —
Q1 2023
Shares 113,928 Value ($000) $0 Avg Close — Range —
Q4 2022
Shares 105,050 Value ($000) $1 Avg Close — Range —
Q3 2022
Shares 100,823 Value ($000) $482 Avg Close — Range —
Q2 2022
Shares 48,413 Value ($000) $218 Avg Close — Range —
Q1 2022
Shares 46,993 Value ($000) $224 Avg Close — Range —
Q4 2021
Shares 36,073 Value ($000) $268 Avg Close — Range —
Q3 2021
Shares 87,688 Value ($000) $497 Avg Close — Range —
Q2 2021
Shares 86,902 Value ($000) $573 Avg Close — Range —
Q1 2021
Shares 83,786 Value ($000) $679 Avg Close — Range —
Q4 2020
Shares 74,592 Value ($000) $481 Avg Close — Range —
Q3 2020
Shares 12,375 Value ($000) $45 Avg Close — Range —
Q2 2020
Shares 12,375 Value ($000) $57 Avg Close — Range —
Q1 2020
Shares 11,373 Value ($000) $39 Avg Close — Range —
Q3 2019
Shares 1,010,498 Value ($000) $2,445 Avg Close — Range —
Q2 2019
Shares 875,490 Value ($000) $1,900 Avg Close — Range —
Q1 2019
Shares 2,440,764 Value ($000) $6,614 Avg Close — Range —
Q4 2018
Shares 2,337,293 Value ($000) $11,219 Avg Close — Range —
Q3 2018
Shares 2,270,747 Value ($000) $21,504 Avg Close — Range —
Q2 2018
Shares 2,899,111 Value ($000) $28,208 Avg Close — Range —
Q1 2018
Shares 2,209,113 Value ($000) $23,240 Avg Close — Range —
Q4 2017
Shares 1,975,716 Value ($000) $12,664 Avg Close — Range —
Q3 2017
Shares 935,136 Value ($000) $7,154 Avg Close — Range —
Q2 2017
Shares 27,636 Value ($000) $196 Avg Close — Range —
Q1 2017
Shares 27,600 Value ($000) $107 Avg Close — Range —
Q4 2016
Shares 27,600 Value ($000) $56 Avg Close — Range —
Q3 2016
Shares 74,200 Value ($000) $199 Avg Close — Range —
Q2 2016
Shares 74,200 Value ($000) $229 Avg Close — Range —
Q1 2016
Shares 42,500 Value ($000) $362 Avg Close — Range —
Q4 2015
Shares 42,500 Value ($000) $577 Avg Close — Range —
Q3 2015
Shares 27,400 Value ($000) $263 Avg Close — Range —
Q2 2015
Shares 32,400 Value ($000) $466 Avg Close — Range —
Q1 2015
Shares 32,400 Value ($000) $290 Avg Close — Range —
Q4 2014
Shares 33,413 Value ($000) $204 Avg Close — Range —
Q3 2014
Shares 30,200 Value ($000) $320 Avg Close — Range —
Q2 2014
Shares 30,200 Value ($000) $358 Avg Close — Range —
Q1 2014
Shares 21,300 Value ($000) $318 Avg Close — Range —
Q4 2013
Shares 21,300 Value ($000) $312 Avg Close — Range —
Q3 2013
Shares 21,300 Value ($000) $363 Avg Close — Range —