IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

DEERFIELD MANAGEMENT COMPANY, L.P.'s Holding History (CIK: 0001009258)

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

Q4 2022
Shares 6,358,314 Value ($000) $31,537 Avg Close — Range —
Q3 2022
Shares 13,740,205 Value ($000) $65,678 Avg Close — Range —
Q2 2022
Shares 15,020,490 Value ($000) $67,592 Avg Close — Range —
Q1 2022
Shares 3,470,675 Value ($000) $16,520 Avg Close — Range —