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ImmunoGen, Inc. (IMGN) Create: Alert

All | News | Filings
Date FiledTypeDescription
04/26/2023 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/26/2023 DEF 14A Form DEF 14A - Other definitive proxy statements:
04/26/2022 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/26/2022 DEF 14A Form DEF 14A - Other definitive proxy statements:
05/26/2021 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/28/2021 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/28/2021 DEF 14A Form DEF 14A - Other definitive proxy statements:
06/03/2020 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/28/2020 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/28/2020 DEF 14A Form DEF 14A - Other definitive proxy statements:
04/30/2019 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/30/2019 DEF 14A Form DEF 14A - Other definitive proxy statements:
04/30/2018 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/30/2018 DEF 14A Form DEF 14A - Other definitive proxy statements:
04/28/2017 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/28/2017 DEF 14A Form DEF 14A - Other definitive proxy statements
10/28/2016 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
10/28/2016 DEF 14A Form DEF 14A - Other definitive proxy statements
09/29/2015 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
09/29/2015 DEF 14A Form DEF 14A - Other definitive proxy statements
09/30/2014 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
09/30/2014 DEF 14A Form DEF 14A - Other definitive proxy statements
10/02/2013 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
10/02/2013 DEF 14A Form DEF 14A - Other definitive proxy statements
10/02/2012 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
10/02/2012 DEF 14A Form DEF 14A - Other definitive proxy statements
09/26/2011 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
09/26/2011 DEF 14A Form DEF 14A - Other definitive proxy statements
10/04/2010 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
10/04/2010 DEF 14A Form DEF 14A - Other definitive proxy statements
09/30/2009 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
09/30/2009 DEF 14A Form DEF 14A - Other definitive proxy statements
10/01/2008 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
10/01/2008 DEF 14A Form DEF 14A - Other definitive proxy statements
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