IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

Birchview Capital, LP's Holding History (CIK: 0001618205)

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

Q4 2023
Shares 188,000 Value ($000) $5,574 Avg Close — Range —
Q3 2023
Shares 190,000 Value ($000) $3,015 Avg Close — Range —
Q2 2023
Shares 190,000 Value ($000) $3,585 Avg Close — Range —
Q1 2023
Shares 150,000 Value ($000) $1 Avg Close — Range —
Q4 2022
Shares 150,000 Value ($000) $1 Avg Close — Range —
Q3 2022
Shares 150,000 Value ($000) $717 Avg Close — Range —
Q2 2022
Shares 150,000 Value ($000) $675 Avg Close — Range —
Q1 2022
Shares 190,000 Value ($000) $904 Avg Close — Range —
Q4 2021
Shares 190,000 Value ($000) $1,410 Avg Close — Range —
Q3 2021
Shares 190,000 Value ($000) $1,077 Avg Close — Range —
Q2 2021
Shares 190,000 Value ($000) $1,252 Avg Close — Range —
Q1 2021
Shares 190,000 Value ($000) $1,539 Avg Close — Range —
Q4 2020
Shares 190,000 Value ($000) $1,226 Avg Close — Range —
Q3 2020
Shares 190,000 Value ($000) $684 Avg Close — Range —
Q2 2020
Shares 190,000 Value ($000) $874 Avg Close — Range —
Q1 2020
Shares 190,000 Value ($000) $648 Avg Close — Range —
Q4 2019
Shares 180,000 Value ($000) $919 Avg Close — Range —
Q3 2019
Shares 180,000 Value ($000) $436 Avg Close — Range —
Q2 2019
Shares 180,000 Value ($000) $391 Avg Close — Range —
Q1 2019
Shares 90,000 Value ($000) $244 Avg Close — Range —
Q4 2018
Shares 22,000 Value ($000) $106 Avg Close — Range —