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COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI) Create: Alert

All | News | Filings
Date FiledTypeDescription
03/15/2023 DEF 14A Form DEF 14A - Other definitive proxy statements:
03/14/2022 DEF 14A Form DEF 14A - Other definitive proxy statements:
04/14/2021 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
04/14/2021 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/05/2021 DEF 14A Form DEF 14A - Other definitive proxy statements:
03/12/2020 DEF 14A Form DEF 14A - Other definitive proxy statements:
04/12/2019 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/15/2019 DEF 14A Form DEF 14A - Other definitive proxy statements:
07/19/2018 DEF 14A Form DEF 14A - Other definitive proxy statements:
04/23/2018 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
03/20/2018 DEF 14A Form DEF 14A - Other definitive proxy statements:
03/16/2017 DEF 14A Form DEF 14A - Other definitive proxy statements:
03/22/2016 DEF 14A Form DEF 14A - Other definitive proxy statements
04/01/2015 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/30/2015 DEFA14A Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
03/19/2015 DEF 14A Form DEF 14A - Other definitive proxy statements
03/04/2014 DEF 14A Form DEF 14A - Other definitive proxy statements
02/28/2013 DEF 14A Form DEF 14A - Other definitive proxy statements
03/02/2012 DEF 14A Form DEF 14A - Other definitive proxy statements
03/04/2011 DEF 14A Form DEF 14A - Other definitive proxy statements
03/01/2010 DEF 14A Form DEF 14A - Other definitive proxy statements
03/13/2009 DEF 14A Form DEF 14A - Other definitive proxy statements
03/10/2008 DEF 14A Form DEF 14A - Other definitive proxy statements
03/30/2007 DEF 14A Form DEF 14A - Other definitive proxy statements
04/28/2006 DEF 14A Form DEF 14A - Other definitive proxy statements
04/29/2005 DEF 14C Form DEF 14C - Other definitive information statements
03/01/2005 DEF 14C Form DEF 14C - Other definitive information statements
12/23/2004 DEF 14C Form DEF 14C - Other definitive information statements
10/06/2004 DEF 14C Form DEF 14C - Other definitive information statements
06/21/2004 DEF 14C Form DEF 14C - Other definitive information statements
06/21/2004 DEF 14C Form DEF 14C - Other definitive information statements
05/07/2004 DEF 14C Form DEF 14C - Other definitive information statements
04/29/2004 DEF 14C Form DEF 14C - Other definitive information statements
07/11/2003 DEF 14C Form DEF 14C - Other definitive information statements
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