| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Sep 30, 2025 | 1 | $0 | 4 | Oct 1, 2025 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jun 30, 2025 | 1 | $0 | 4 | Jul 1, 2025 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Mar 31, 2025 | 1 | $0 | 4 | Mar 31, 2025 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jan 21, 2025 | 1 | $0 | 4 | Jan 22, 2025 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jan 1, 2025 | 1 | $0 | 4 | Jan 3, 2025 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Oct 1, 2024 | 1 | $0 | 4/A | Oct 22, 2024 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jul 1, 2024 | 1 | $0 | 4 | Jul 2, 2024 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Apr 1, 2024 | 1 | $0 | 4 | Apr 1, 2024 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Mar 22, 2024 | 1 | $0 | 4 | Apr 2, 2024 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jan 1, 2024 | 1 | $0 | 4/A | Jan 3, 2024 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jan 1, 2024 | 1 | $0 | 4 | Jan 3, 2024 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Oct 1, 2023 | 1 | $0 | 4 | Oct 3, 2023 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jul 1, 2023 | 1 | $0 | 4 | Jul 5, 2023 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jun 14, 2023 | 1 | -$273K | 4 | Jun 16, 2023 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | May 11, 2023 | 1 | -$247K | 4 | May 12, 2023 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Apr 1, 2023 | 1 | $0 | 4 | Apr 5, 2023 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jan 3, 2023 | 1 | $0 | 4/A | Oct 2, 2023 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Oct 1, 2022 | 1 | $0 | 4 | Oct 3, 2022 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jul 1, 2022 | 1 | $0 | 4 | Jul 5, 2022 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Apr 1, 2022 | 1 | $0 | 4 | Apr 1, 2022 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Oct 1, 2021 | 1 | $0 | 4 | Oct 1, 2021 | Director | 
        
          | CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Jul 1, 2021 | 1 | $0 | 4 | Jul 2, 2021 | Director |