| 2024-06-11 | Cogent Communications Holdings, Inc. CCOI | director | 10,000 0.0206% | $52.61 | $526,130 | +0.4% | ||
| 2023-11-14 | Sale | Cogent Communications Holdings, Inc. CCOI | director | 10,550 0.0212% | $65.83 | $694,518 | -1.57% | |
| 2022-11-09 | Cogent Communications Holdings, Inc. CCOI | director | 10,000 0.0213% | $54.88 | $548,750 | +20.21% | ||
| 2020-05-26 | Sale | Cogent Communications Holdings, Inc. CCOI | director | 3,000 0.0066% | $77.06 | $231,191 | -14.36% | |
| 2020-03-03 | Sale | Cogent Communications Holdings, Inc. CCOI | director | 1,350 0.0029% | $79.40 | $107,190 | -16.12% | |
| 2019-03-12 | Sale | Cogent Communications Holdings, Inc. CCOI | director | 2,000 0.0044% | $50.00 | $100,000 | +20.35% | |
| 2018-05-18 | Sale | Cogent Communications Holdings, Inc. CCOI | director | 2,000 0.0045% | $50.00 | $100,000 | +4.76% | |
| 2017-12-15 | Sale | Cogent Communications Holdings, Inc. CCOI | director | 5,000 0.0113% | $47.00 | $235,000 | +10.38% | |
| 2016-05-09 | Sale | Cogent Communications Holdings, Inc. CCOI | director | 10,000 0.0226% | $39.23 | $392,302 | +5.55% | |
| 2014-11-25 | Sale | Cogent Communications Holdings, Inc. CCOI | director | 7,500 0.0165% | $34.70 | $260,250 | -2.16% | |
| 2011-01-06 | Cogent Communications Holdings, Inc. CCOI | director | 5,500 0.0124% | $13.98 | $76,890 | +5.86% |