SC 13G/A | 2024-02-14 | Redmile Group, LLC | ImmunoGen, Inc. | 16,423,922 | 5.9% | EDGAR |
SC 13G/A | 2024-02-14 | RA CAPITAL MANAGEMENT, L.P. | ImmunoGen, Inc. | 26,916,027 | 10.0% | EDGAR |
SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | ImmunoGen, Inc. | 25,466,950 | 9.1% | EDGAR |
SC 13G/A | 2024-02-07 | ADAGE CAPITAL PARTNERS GP, L.L.C. | ImmunoGen, Inc. | 971,928 | 0.4% | EDGAR |
SC 13G/A | 2024-01-25 | BlackRock Inc. | ImmunoGen, Inc. | 21,823,243 | 8.2% | EDGAR |
SC 13G/A | 2024-01-22 | STATE STREET CORP | ImmunoGen, Inc. | - | 3.0% | EDGAR |
SC 13G/A | 2023-02-14 | Redmile Group, LLC | ImmunoGen, Inc. | 19,896,453 | 8.6% | EDGAR |
SC 13G/A | 2023-02-14 | RA CAPITAL MANAGEMENT, L.P. | ImmunoGen, Inc. | 22,075,158 | 10.0% | EDGAR |
SC 13G/A | 2023-02-10 | Flynn James E | ImmunoGen, Inc. | 6,358,314 | 2.9% | EDGAR |
SC 13G/A | 2023-02-09 | FMR LLC | ImmunoGen, Inc. | 1,197,223 | 0.5% | EDGAR |
SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | ImmunoGen, Inc. | 14,378,435 | 6.5% | EDGAR |
SC 13G/A | 2023-02-08 | STATE STREET CORP | ImmunoGen, Inc. | - | 7.9% | EDGAR |
SC 13G/A | 2023-02-06 | WELLINGTON MANAGEMENT GROUP LLP | ImmunoGen, Inc. | 9,226,708 | 4.2% | EDGAR |
SC 13G/A | 2023-02-03 | BlackRock Inc. | ImmunoGen, Inc. | 18,016,002 | 8.2% | EDGAR |
SC 13G | 2022-12-27 | ADAGE CAPITAL PARTNERS GP, L.L.C. | ImmunoGen, Inc. | 11,119,000 | 5.0% | EDGAR |
SC 13G | 2022-05-19 | Flynn James E | ImmunoGen, Inc. | 14,779,590 | 6.7% | EDGAR |
SC 13G | 2022-04-04 | ADAGE CAPITAL PARTNERS GP, L.L.C. | ImmunoGen, Inc. | 11,586,193 | 5.2% | EDGAR |
SC 13G/A | 2022-03-11 | BlackRock Inc. | ImmunoGen, Inc. | 14,863,304 | 6.9% | EDGAR |
SC 13G/A | 2022-02-14 | RA CAPITAL MANAGEMENT, L.P. | ImmunoGen, Inc. | 22,162,958 | 10.0% | EDGAR |
SC 13G/A | 2022-02-14 | Redmile Group, LLC | ImmunoGen, Inc. | 19,621,981 | 8.5% | EDGAR |