IMMUNOGEN INC filings

SEC filings by IMMUNOGEN INC (ownership)
TypeFiledFilerSubjectShares OwnedPercent Owned
SC 13G/A2024-02-14Redmile Group, LLCImmunoGen, Inc.16,423,9225.9%EDGAR
SC 13G/A2024-02-14RA CAPITAL MANAGEMENT, L.P.ImmunoGen, Inc.26,916,02710.0%EDGAR
SC 13G/A2024-02-13VANGUARD GROUP INCImmunoGen, Inc.25,466,9509.1%EDGAR
SC 13G/A2024-02-07ADAGE CAPITAL PARTNERS GP, L.L.C.ImmunoGen, Inc.971,9280.4%EDGAR
SC 13G/A2024-01-25BlackRock Inc.ImmunoGen, Inc.21,823,2438.2%EDGAR
SC 13G/A2024-01-22STATE STREET CORPImmunoGen, Inc.-3.0%EDGAR
SC 13G/A2023-02-14Redmile Group, LLCImmunoGen, Inc.19,896,4538.6%EDGAR
SC 13G/A2023-02-14RA CAPITAL MANAGEMENT, L.P.ImmunoGen, Inc.22,075,15810.0%EDGAR
SC 13G/A2023-02-10Flynn James EImmunoGen, Inc.6,358,3142.9%EDGAR
SC 13G/A2023-02-09FMR LLCImmunoGen, Inc.1,197,2230.5%EDGAR
SC 13G/A2023-02-09VANGUARD GROUP INCImmunoGen, Inc.14,378,4356.5%EDGAR
SC 13G/A2023-02-08STATE STREET CORPImmunoGen, Inc.-7.9%EDGAR
SC 13G/A2023-02-06WELLINGTON MANAGEMENT GROUP LLPImmunoGen, Inc.9,226,7084.2%EDGAR
SC 13G/A2023-02-03BlackRock Inc.ImmunoGen, Inc.18,016,0028.2%EDGAR
SC 13G2022-12-27ADAGE CAPITAL PARTNERS GP, L.L.C.ImmunoGen, Inc.11,119,0005.0%EDGAR
SC 13G2022-05-19Flynn James EImmunoGen, Inc.14,779,5906.7%EDGAR
SC 13G2022-04-04ADAGE CAPITAL PARTNERS GP, L.L.C.ImmunoGen, Inc.11,586,1935.2%EDGAR
SC 13G/A2022-03-11BlackRock Inc.ImmunoGen, Inc.14,863,3046.9%EDGAR
SC 13G/A2022-02-14RA CAPITAL MANAGEMENT, L.P.ImmunoGen, Inc.22,162,95810.0%EDGAR
SC 13G/A2022-02-14Redmile Group, LLCImmunoGen, Inc.19,621,9818.5%EDGAR