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Jan 23, 2026 10:57AM Form SCHEDULE 13G/A COGENT COMMUNICATIONS Filed by: BlackRock, Inc.
Nov 14, 2025 04:55PM
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Jan 26, 2024 02:31PM Form SC 13G/A COGENT COMMUNICATIONS Filed by: VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.
Jan 22, 2024 03:53PM
Feb 9, 2023 11:27AM
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Jan 27, 2022 06:11AM Form SC 13G/A COGENT COMMUNICATIONS Filed by: BlackRock Inc.
Jan 25, 2022 11:29AM
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Jan 26, 2021 02:27PM
Feb 13, 2020 11:30AM
Feb 12, 2020 06:18AM Form SC 13G/A COGENT COMMUNICATIONS Filed by: VANGUARD GROUP INC
Feb 4, 2020 11:55AM
May 10, 2019 12:08PM
Feb 13, 2019 10:18AM
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Feb 14, 2018 11:28AM Form SC 13G COGENT COMMUNICATIONS Filed by: RENAISSANCE TECHNOLOGIES LLC
Feb 13, 2018 09:43AM
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Feb 7, 2018 10:15AM
Jan 19, 2018 02:38PM
Feb 14, 2017 10:55AM
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Feb 10, 2017 09:42AM Form SC 13G/A COGENT COMMUNICATIONS Filed by: VANGUARD GROUP INC
Jan 12, 2017 11:27AM
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Jan 26, 2016 08:22AM Form SC 13G/A COGENT COMMUNICATIONS Filed by: BlackRock Inc.
Oct 5, 2015 09:38AM

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