IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

BAKER BROS. ADVISORS LP's Holding History (CIK: 0001263508)

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

Q2 2023
Shares 1,520,097 Value ($000) $28,684 Avg Close — Range —
Q4 2017
Shares 2,563,489 Value ($000) $16,432 Avg Close — Range —
Q3 2017
Shares 2,688,489 Value ($000) $20,567 Avg Close — Range —
Q2 2017
Shares 3,015,353 Value ($000) $21,439 Avg Close — Range —
Q1 2017
Shares 3,015,353 Value ($000) $11,669 Avg Close — Range —
Q4 2016
Shares 3,015,353 Value ($000) $6,151 Avg Close — Range —
Q3 2016
Shares 3,015,353 Value ($000) $8,081 Avg Close — Range —
Q2 2016
Shares 3,015,353 Value ($000) $9,287 Avg Close — Range —
Q1 2016
Shares 4,452,445 Value ($000) $37,935 Avg Close — Range —
Q4 2015
Shares 4,452,445 Value ($000) $60,420 Avg Close — Range —
Q3 2015
Shares 3,548,040 Value ($000) $34,061 Avg Close — Range —
Q2 2015
Shares 2,320,424 Value ($000) $33,368 Avg Close — Range —
Q1 2015
Shares 999,496 Value ($000) $8,945 Avg Close — Range —