ImmunoGen, Inc. — DEFA14A

ImmunoGen, Inc. of WALTHAM, MA filed a DEFA14A with the SEC on 2022-04-26. Industry: Pharmaceutical Preparations.

Filing

Filed: 2022-04-26
Form: DEFA14A
Accession: 0001558370-22-005995
Registrant: ImmunoGen, Inc.
CIK: 0000855654
Industry (SIC): Pharmaceutical Preparations (2834)
State of incorporation: MA
Location: WALTHAM, MA

Documents (3)

Seq	Type	Description
1	DEFA14A	DEFA14A
2	GRAPHIC	GRAPHIC
3	GRAPHIC	GRAPHIC

Filing timeline for this registrant (60)

Showing 12 of 60 filings.

Filed	Form
2024-01-29	DEFA14A
2024-01-24	DEFA14A
2024-01-08	DEFA14A
2024-01-02	DEFM14A
2023-12-21	PREM14A
2023-12-21	DEFA14A
2023-11-30	DEFA14A
2023-11-30	DEFA14A
2023-04-26	DEFA14A
2023-04-26	DEF 14A
2022-04-26	DEFA14A
2022-04-26	DEF 14A

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