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Houghton Mifflin Harcourt Co (HMHC) Create: Alert

All | News | Filings
Date FiledTypeDescription
03/22/2021 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/22/2021 DEF 14A Form DEF 14A - Other definitive proxy statements:
04/28/2020 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/27/2020 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/27/2020 DEF 14A Form DEF 14A - Other definitive proxy statements:
03/29/2019 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/29/2019 DEF 14A Form DEF 14A - Other definitive proxy statements:
03/29/2018 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/29/2018 DEF 14A Form DEF 14A - Other definitive proxy statements:
03/29/2017 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/29/2017 DEF 14A Form DEF 14A - Other definitive proxy statements
03/30/2016 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/30/2016 DEF 14A Form DEF 14A - Other definitive proxy statements
05/13/2015 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
05/06/2015 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
04/24/2015 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/31/2015 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/31/2015 DEF 14A Form DEF 14A - Other definitive proxy statements
12/11/2014 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/27/2014 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/27/2014 DEF 14A Form DEF 14A - Other definitive proxy statements

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