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COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI)
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Create: Alert |
All | News | Filings
| Date Filed | Type | Description |
| 01/30/2023 |
SC 13G/A
| BlackRock Inc. reports a 15.6% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 02/10/2022 |
SC 13G/A
| RENAISSANCE TECHNOLOGIES LLC reports a 4.6% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 02/09/2022 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 01/26/2022 |
SC 13G/A
| BlackRock Inc. reports a 14.8% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 01/25/2022 |
SC 13G/A
| BlackRock Inc. reports a 14.8% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 05/10/2021 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/11/2021 |
SC 13G/A
| RENAISSANCE TECHNOLOGIES LLC reports a 5.7% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 02/10/2021 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/13/2020 |
SC 13G/A
| RENAISSANCE TECHNOLOGIES LLC reports a 7.7% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 02/11/2020 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/04/2020 |
SC 13G/A
| BlackRock Inc. reports a 14.7% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 05/10/2019 |
SC 13G/A
| VANGUARD GROUP INC reports a 10.3% stake in Cogent Communications Holdings Inc |
| 02/13/2019 |
SC 13G/A
| RENAISSANCE TECHNOLOGIES LLC reports a 7.4% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 02/11/2019 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 01/24/2019 |
SC 13G/A
| BlackRock Inc. reports a 14.8% stake in COGENT COMMUNICATIONS HOLDINGS, INC. |
| 03/12/2018 |
SC 13G/A
| VANGUARD GROUP INC reports a 10% stake in Cogent Communications Holdings Inc |
| 02/13/2018 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/08/2018 |
SC 13G/A
| VANGUARD GROUP INC reports a 9.9% stake in Cogent Communications Holdings Inc |
| 02/07/2018 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/14/2017 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/10/2017 |
SC 13G/A
| FRONTIER CAPITAL MANAGEMENT CO LLC reports a 6.3% stake in COGENT COMMUNICATIONS GROUP INC |
| 02/10/2017 |
SC 13G/A
| COGENT COMMUNICATIONS HOLDINGS, INC. reports a 10.3% stake in Cogent Communications Holdings Inc |
| 01/12/2017 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals [Amend] |
| 08/10/2016 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals [Amend] |
| 02/12/2016 |
SC 13G/A
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend] |
| 02/11/2016 |
SC 13G/A
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend] |
| 02/12/2013 |
SC 13G/A
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend] |
| 02/14/2012 |
SC 13G/A
| FRONTIER CAPITAL MANAGEMENT CO LLC reports a 8.7% stake in COGENT COMMUNICATIONS GROUP INC |
| 02/14/2012 |
SC 13G/A
| COGENT COMMUNICATIONS GROUP INC reports a 7.5% stake in Cogent Communications Group Inc |
| 02/13/2012 |
SC 13G/A
| COGENT COMMUNICATIONS GROUP INC reports a 5.3% stake in COGENT COMMUNICATIONS GROUP INC |
| 02/10/2012 |
SC 13G/A
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend] |
| 02/08/2012 |
SC 13G/A
| COGENT COMMUNICATIONS GROUP INC reports a 3.1% stake in COGENT COMMUNICATIONS GROUP INC |
| 02/02/2012 |
SC 13G/A
| COGENT COMMUNICATIONS GROUP INC reports a 0% stake in Cogent Communications Group, Inc. |
| 07/11/2011 |
SC 13G/A
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals [amend] |
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