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| Company Name: | IMMUNOGEN, INC. |
| Employer identification number (EIN): | 042726691 |
| NAIC Classification: | 541700 |
The following addresses have been detected on the 401k submissions:
| USA Mailing Address | |||||
|---|---|---|---|---|---|
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| Date first seen: 2007-01-01 | |||||
| Date last seen: 2025-12-04 | |||||
| USA Location Address | |||||
|---|---|---|---|---|---|
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| Date first seen: 2007-01-01 | |||||
| Date last seen: 2025-07-31 | |||||
| Plan id# | Plan Name | Plan Start Date | Plan Effective Date |
|---|---|---|---|
| 501 | IMMUNOGEN, INC. WELFARE BENEFIT PLAN | 2015-01-01 | 1991-03-01 |
| 001 | IMMUNOGEN, INC. 401(K) PLAN AND TRUST | 2015-01-01 | 1990-09-01 |
| 503 | IMMUNOGEN, INC. SEVERANCE PAY PLAN FOR ALL EMPLOYEES | 2016-09-23 | 2016-09-23 |
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