| 2024-06-10 | Sale | Cogent Communications Holdings, Inc. CCOI | VICE PRESIDENT, CFO | 2,400 0.005% | $52.60 | $126,252 | +1.04% | |
| 2024-03-12 | Sale | Cogent Communications Holdings, Inc. CCOI | VICE PRESIDENT, CFO | 2,400 0.005% | $68.17 | $163,608 | -8.39% | |
| 2023-12-04 | Sale | Cogent Communications Holdings, Inc. CCOI | VICE PRESIDENT, CFO | 9,700 0.0197% | $65.84 | $638,646 | -1.1% | |
| 2023-09-05 | Sale | Cogent Communications Holdings, Inc. CCOI | VICE PRESIDENT, CFO | 4,850 0.0099% | $69.43 | $336,736 | -6.39% | |
| 2023-06-05 | Sale | Cogent Communications Holdings, Inc. CCOI | VICE PRESIDENT, CFO | 4,850 0.0104% | $62.28 | $302,035 | +6.16% | |
| 2023-05-09 | Sale | Cogent Communications Holdings, Inc. CCOI | VICE PRESIDENT, CFO | 10,000 0.0213% | $64.96 | $649,600 | +1.21% | |
| 2023-03-03 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO, Treasurer | 4,850 0.0103% | $64.30 | $311,855 | +4.5% | |
| 2022-12-02 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO Treasurer | 9,700 0.0203% | $56.51 | $548,163 | +14.07% | |
| 2022-09-09 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO Treasurer | 4,850 0.0101% | $52.35 | $253,880 | +20.04% | |
| 2022-06-02 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO Treasurer | 4,850 0.0103% | $60.49 | $293,377 | -0.77% | |
| 2020-03-03 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 4,850 0.0106% | $81.37 | $394,652 | -16.12% | |
| 2019-12-31 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 4,250 0.0093% | $66.07 | $280,808 | +12.08% | |
| 2019-12-03 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 5,000 0.011% | $61.74 | $308,700 | +19.35% | |
| 2019-09-05 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 5,000 0.011% | $60.00 | $300,000 | +23.84% | |
| 2019-06-13 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 1,400 0.0031% | $60.84 | $85,176 | +6.97% | |
| 2019-06-05 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 5,000 0.0109% | $58.50 | $292,500 | +8.18% | |
| 2019-05-06 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 1,500 0.0033% | $57.11 | $85,663 | +11.47% | |
| 2019-03-12 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 5,000 0.011% | $50.00 | $250,000 | +20.35% | |
| 2018-12-14 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 3,000 0.0066% | $46.89 | $140,658 | +24.42% | |
| 2018-09-05 | Sale | Cogent Communications Holdings, Inc. CCOI | VP, CFO & Treasurer | 4,500 0.0098% | $53.55 | $240,975 | +0.7% |