| Filed On | Filing |
|---|---|
| 01 Mar 2023 | 10-K |
| 28 Feb 2022 | 10-K |
| 01 Mar 2021 | 10-K |
| 11 Mar 2020 | 10-K |
| 01 Mar 2019 | 10-K |
| 07 Mar 2018 | 10-K |
| 25 Aug 2016 | 10-K |
| 27 Aug 2015 | 10-K |
| 28 Aug 2014 | 10-K |
| 29 Aug 2013 | 10-K |
| 29 Aug 2012 | 10-K |
| 29 Aug 2011 | 10-K |
| 27 Aug 2010 | 10-K |
| 28 Aug 2009 | FORM 10-K |
| 02 Sep 2008 | FORM 10-K |
| 30 Aug 2007 | 10-K |
| 28 Aug 2006 | IMMUNOGEN, INC. FORM 10-K |
| 29 Aug 2005 | 10-K |
| 20 Aug 2004 | FORM 10-K |
| 26 Sep 2003 | FORM 10-K |
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