IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q3 2021
Shares 87,437 Value ($000) $496 Avg Close — Range —
Q2 2021
Shares 88,585 Value ($000) $584 Avg Close — Range —