IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2023
Shares 836,134 Value ($000) $24,791 Avg Close — Range —
Q3 2023
Shares 699,116 Value ($000) $11,095 Avg Close — Range —
Q2 2023
Shares 700,323 Value ($000) $13,215 Avg Close — Range —
Q4 2021
Shares 12,969 Value ($000) $96 Avg Close — Range —
Q3 2021
Shares 12,969 Value ($000) $74 Avg Close — Range —
Q2 2021
Shares 14,982 Value ($000) $99 Avg Close — Range —
Q1 2021
Shares 20,944 Value ($000) $170 Avg Close — Range —
Q4 2020
Shares 10,643 Value ($000) $69 Avg Close — Range —
Q4 2015
Shares 113,550 Value ($000) $1,541 Avg Close — Range —
Q3 2015
Shares 113,927 Value ($000) $1,094 Avg Close — Range —
Q2 2015
Shares 104,829 Value ($000) $1,507 Avg Close — Range —
Q3 2014
Shares 80,058 Value ($000) $848 Avg Close — Range —
Q2 2014
Shares 75,984 Value ($000) $900 Avg Close — Range —
Q1 2014
Shares 52,680 Value ($000) $787 Avg Close — Range —
Q4 2013
Shares 56,880 Value ($000) $834 Avg Close — Range —
Q3 2013
Shares 56,710 Value ($000) $965 Avg Close — Range —
Q2 2013
Shares 53,160 Value ($000) $882 Avg Close — Range —