Document and Entity Information
Document and Entity Information | Apr. 06, 2023 |
Cover [Abstract] | |
Document Type | 8-K |
Document Period End Date | Apr. 06, 2023 |
Securities Act File Number | 0-17999 |
Entity Registrant Name | ImmunoGen, Inc. |
Entity Incorporation, State or Country Code | MA |
Entity Tax Identification Number | 04-2726691 |
Entity Address, Address Line One | 830 Winter Street |
Entity Address, State or Province | MA |
Entity Address, City or Town | Waltham, |
Entity Address, Postal Zip Code | 02451 |
City Area Code | 781 |
Local Phone Number | 895-0600 |
Written Communications | false |
Soliciting Material | false |
Pre-commencement Tender Offer | false |
Pre-commencement Issuer Tender Offer | false |
Title of 12(b) Security | Common Stock, $.01 par value |
Trading Symbol | IMGN |
Security Exchange Name | NASDAQ |
Entity Emerging Growth Company | false |
Entity Central Index Key | 0000855654 |
Amendment Flag | false |
N-2
N-2 | Apr. 06, 2023 |
Cover [Abstract] | |
Entity Central Index Key | 0000855654 |
Amendment Flag | false |
Securities Act File Number | 0-17999 |
Document Type | 8-K |
Entity Registrant Name | ImmunoGen, Inc. |
Entity Address, Address Line One | 830 Winter Street |
Entity Address, City or Town | Waltham, |
Entity Address, State or Province | MA |
Entity Address, Postal Zip Code | 02451 |
City Area Code | 781 |
Local Phone Number | 895-0600 |
Entity Emerging Growth Company | false |