IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

Granahan Investment Management, LLC's Holding History (CIK: 0001026710)

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

Q4 2023
Shares 119,016 Value ($000) $3,529 Avg Close — Range —
Q3 2023
Shares 681,377 Value ($000) $10,813 Avg Close — Range —
Q2 2023
Shares 426,752 Value ($000) $8,053 Avg Close — Range —
Q1 2023
Shares 864,766 Value ($000) $3,321 Avg Close — Range —
Q4 2022
Shares 2,185,958 Value ($000) $10,842 Avg Close — Range —
Q3 2022
Shares 1,876,960 Value ($000) $8,972 Avg Close — Range —
Q2 2022
Shares 1,881,796 Value ($000) $8,468 Avg Close — Range —
Q1 2022
Shares 1,957,719 Value ($000) $9,319 Avg Close — Range —
Q4 2021
Shares 1,266,690 Value ($000) $9,399 Avg Close — Range —
Q3 2021
Shares 677,618 Value ($000) $3,842 Avg Close — Range —
Q3 2015
Shares 401,000 Value ($000) $3,850 Avg Close — Range —
Q2 2015
Shares 419,000 Value ($000) $6,025 Avg Close — Range —
Q1 2015
Shares 419,000 Value ($000) $3,750 Avg Close — Range —
Q4 2014
Shares 413,800 Value ($000) $2,524 Avg Close — Range —
Q3 2014
Shares 520,332 Value ($000) $5,510 Avg Close — Range —
Q2 2014
Shares 521,052 Value ($000) $6,174 Avg Close — Range —
Q1 2014
Shares 540,641 Value ($000) $8,072 Avg Close — Range —
Q4 2013
Shares 1,135,401 Value ($000) $16,656 Avg Close — Range —
Q3 2013
Shares 1,099,230 Value ($000) $18,709 Avg Close — Range —
Q2 2013
Shares 1,156,000 Value ($000) $19,178 Avg Close — Range —