IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q1 2023
Shares 100,000 Value ($000) $384 Avg Close — Range —
Q4 2022
Shares 67,153 Value ($000) $333 Avg Close — Range —
Q2 2022
Shares 76,016 Value ($000) $342 Avg Close — Range —
Q1 2022
Shares 38,500 Value ($000) $183 Avg Close — Range —
Q1 2019
Shares 125,667 Value ($000) $341 Avg Close — Range —
Q3 2018
Shares 28,385 Value ($000) $269 Avg Close — Range —
Q4 2017
Shares 15,246 Value ($000) $98 Avg Close — Range —