| 2024-06-14 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 60,000 0.1215% | $51.78 | $3.11M | +0.39% | |
| 2024-06-12 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 60,000 0.1281% | $54.60 | $3.28M | -3.88% | |
| 2024-05-13 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 50,000 0.1026% | $59.44 | $2.97M | -3.96% | |
| 2024-03-15 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 26,174 0.0546% | $64.21 | $1.68M | -3.33% | |
| 2024-03-13 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 30,000 0.0635% | $67.52 | $2.03M | -6.76% | |
| 2024-03-12 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 50,000 0.1048% | $68.12 | $3.41M | -8.39% | |
| 2024-03-11 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 35,000 0.0734% | $67.93 | $2.38M | -7.95% | |
| 2024-03-06 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 8,826 0.019% | $72.55 | $640,326 | -12.22% | |
| 2023-12-13 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 20,000 0.0408% | $69.99 | $1.4M | -8.35% | |
| 2023-12-01 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 36,604 0.0748% | $65.18 | $2.39M | +0.44% | |
| 2023-11-30 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 3,396 0.0071% | $64.31 | $218,409 | +3.74% | |
| 2023-11-14 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 40,000 0.081% | $66.37 | $2.65M | -1.57% | |
| 2023-09-15 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 18,191 0.0374% | $65.82 | $1.2M | -0.68% | |
| 2023-09-13 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 16,753 0.0343% | $66.70 | $1.12M | -2.08% | |
| 2023-09-12 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 28,247 0.0581% | $66.97 | $1.89M | -2.01% | |
| 2023-09-11 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 3,309 0.0068% | $67.16 | $222,239 | -1.63% | |
| 2023-09-08 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 41,691 0.0856% | $67.72 | $2.82M | -3.19% | |
| 2023-06-08 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 7,061 0.0149% | $62.44 | $440,878 | +4.28% | |
| 2023-06-07 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 42,334 0.0901% | $62.30 | $2.64M | +5.19% | |
| 2023-06-06 | Sale | Cogent Communications Holdings, Inc. CCOI | CHAIRMAN, CEO, AND PRESIDENT | 25,605 0.0548% | $62.25 | $1.59M | +5.95% |