ImmunoGen, Inc. SC 13G and SC 13G/A reports

Location
830 Winter St, Waltham, MA
State of incorporation
MA
Fiscal year end
December 31
Data updated at
7/19/2024, 08:55 AM
Form type Sec Links Description Filing date Reporting date
SC 13G/A Report SC 13G/A Feb 14, 2024
SC 13G/A Report SC 13G/A Feb 14, 2024
SC 13G/A Report SCHEDULE 13G/A Feb 13, 2024
SC 13G/A Report IMMUNOGEN, INC. Feb 7, 2024
SC 13G/A Report Jan 25, 2024
SC 13G/A Report Jan 22, 2024
SC 13G/A Report SC 13G/A Feb 14, 2023
SC 13G/A Report SC 13G/A Feb 14, 2023
SC 13G/A Report Feb 10, 2023
SC 13G/A Report SCHEDULE 13G/A Feb 9, 2023
SC 13G/A Report Feb 9, 2023
SC 13G/A Report Feb 8, 2023
SC 13G/A Report SEC SCHEDULE 13G Feb 6, 2023
SC 13G/A Report Feb 3, 2023
SC 13G Report IMMUNOGEN, INC. Dec 27, 2022
SC 13G Report May 19, 2022
SC 13G Report IMMUNOGEN, INC. Apr 4, 2022
SC 13G/A Report Mar 11, 2022
SC 13G/A Report SC 13G/A Feb 14, 2022
SC 13G/A Report SC 13G/A Feb 14, 2022
SC 13G/A Report SCHEDULE 13G/A Feb 10, 2022
SC 13G/A Report Feb 9, 2022
SC 13G Report Feb 8, 2022
SC 13G/A Report SEC SCHEDULE 13G Jan 10, 2022
SC 13G Report SC 13G Feb 16, 2021
SC 13G/A Report SC 13G/A Feb 16, 2021
SC 13G/A Report Feb 11, 2021
SC 13G/A Report SCHEDULE 13G/A Feb 10, 2021
SC 13G/A Report Feb 9, 2021
SC 13G Report Feb 8, 2021
SC 13G/A Report SEC SCHEDULE 13G Feb 4, 2021
SC 13G/A Report Jan 29, 2021
SC 13G/A Report SCHEDULE 13G/A Feb 14, 2020
SC 13G/A Report NONE Feb 14, 2020
SC 13G/A Report Feb 13, 2020
SC 13G Report Feb 12, 2020
SC 13G/A Report SCHEDULE 13G/A Feb 12, 2020
SC 13G Report SEC SCHEDULE 13G Feb 10, 2020
SC 13G/A Report Feb 5, 2020
SC 13G/A Report MS AMENDMENT May 9, 2019
SC 13G/A Report SCHEDULE 13G/A Feb 14, 2019
SC 13G/A Report NONE Feb 14, 2019
SC 13G Report IMMUNOGEN, INC. Feb 14, 2019
SC 13G/A Report Feb 12, 2019
SC 13G/A Report Feb 4, 2019
SC 13G Report MS INITIAL Jan 11, 2019
SC 13G/A Report Feb 14, 2018
SC 13G Report Feb 14, 2018
SC 13G/A Report NONE Feb 14, 2018
SC 13G/A Report IMMUNOGEN, INC. Feb 14, 2018
SC 13G/A Report IMMUNOGEN, INC. Feb 14, 2018
SC 13G/A Report 13G/A Feb 13, 2018
SC 13G Report Feb 8, 2018
SC 13G Report Feb 1, 2018
SC 13G/A Report Oct 10, 2017
SC 13G/A Report NONE Oct 10, 2017
SC 13G Report IMMUNOGEN, INC Aug 7, 2017
SC 13G Report HIGHBRIDGE CAPITAL MANAGEMENT LLC Apr 24, 2017
SC 13G/A Report SC 13G/A Mar 6, 2017
SC 13G/A Report SC 13G/A Feb 14, 2017
SC 13G/A Report NONE Feb 14, 2017
SC 13G/A Report 13G/A Feb 13, 2017
SC 13G/A Report Feb 10, 2017
SC 13G/A Report SC 13G/A Feb 9, 2017
SC 13G/A Report Jan 25, 2017
SC 13G/A Report SC 13G/A Dec 6, 2016
SC 13G/A Report Nov 10, 2016
SC 13G/A Report SC 13G/A Jun 10, 2016
SC 13G Report SC 13G Feb 16, 2016
SC 13G/A Report NONE Feb 16, 2016
SC 13G Report SCHEDULE 13G Feb 12, 2016
SC 13G/A Report Feb 12, 2016
SC 13G/A Report SC 13G/A Feb 12, 2016
SC 13G/A Report Feb 11, 2016
SC 13G/A Report Jan 26, 2016
SC 13G/A Report SC 13G/A Feb 13, 2015
SC 13G/A Report Feb 13, 2015
SC 13G/A Report NONE Feb 10, 2015
SC 13G/A Report Feb 10, 2015
SC 13G/A Report Jan 29, 2015
SC 13G/A Report SC 13G/A Feb 14, 2014
SC 13G/A Report NONE Feb 14, 2014
SC 13G/A Report DISCLOSURE DOCUMENT Feb 14, 2014
SC 13G/A Report Feb 14, 2014
SC 13G/A Report Feb 11, 2014
SC 13G/A Report Jan 29, 2014
SC 13G/A Report NONE Dec 9, 2013
SC 13G/A Report SC 13G/A Feb 14, 2013
SC 13G/A Report Feb 14, 2013
SC 13G/A Report DISCLOSURE DOCUMENT Feb 14, 2013
SC 13G/A Report IMMUNO Feb 14, 2013
SC 13G/A Report SCHEDULE 13G AMENDMENT NO. 3 Feb 13, 2013
SC 13G Report Feb 13, 2013
SC 13G/A Report Feb 8, 2013
SC 13G/A Report Feb 14, 2012
SC 13G Report DISCLOSURE DOCUMENT Feb 14, 2012
SC 13G/A Report IMMUNOGEN Feb 14, 2012
SC 13G/A Report SC 13G/A Feb 13, 2012
SC 13G/A Report Feb 13, 2012
SC 13G/A Report SC 13G/A Feb 7, 2012
SC 13G/A Report Feb 14, 2011
SC 13G/A Report DOC ONE Feb 14, 2011
SC 13G/A Report SC 13G/A Feb 14, 2011
SC 13G Report Feb 11, 2011
SC 13G/A Report SC 13G/A Feb 10, 2011
SC 13G/A Report Feb 4, 2011
SC 13G Report SC 13G May 14, 2010
SC 13G Report SC 13G Apr 9, 2010
SC 13G Report SC 13G Apr 9, 2010
SC 13G/A Report SC 13G/A Mar 8, 2010
SC 13G/A Report Feb 16, 2010
SC 13G/A Report DOC ONE Feb 16, 2010
SC 13G/A Report AMENDMENT NO. 4 TO THE SCHEDULE 13G Feb 10, 2010
SC 13G Report Jan 29, 2010
SC 13G Report SC 13G Jan 7, 2010