| 2019-03-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 2,400 0.0053% | $49.00 | $117,596 | +23.29% | |
| 2018-12-03 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 3,000 0.0065% | $49.16 | $147,473 | +16.01% | |
| 2018-09-13 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 4,000 0.0089% | $54.92 | $219,689 | +0.82% | |
| 2018-09-12 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 2,000 0.0044% | $54.95 | $109,910 | +1.04% | |
| 2018-09-04 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 3,000 0.0067% | $53.95 | $161,857 | +2.23% | |
| 2018-06-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 3,000 0.0067% | $51.14 | $153,434 | +3.27% | |
| 2018-03-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 3,000 0.0067% | $43.17 | $129,519 | +19.62% | |
| 2017-12-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 3,000 0.0066% | $46.51 | $139,534 | +8.82% | |
| 2017-09-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 3,000 0.0067% | $46.75 | $140,261 | +3.32% | |
| 2017-06-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 3,000 0.0066% | $40.20 | $120,606 | +12.9% | |
| 2017-03-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 3,000 0.0067% | $42.00 | $125,990 | +6.76% | |
| 2016-12-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0023% | $36.99 | $36,990 | +17.89% | |
| 2016-11-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0022% | $36.40 | $36,400 | +17.02% | |
| 2016-10-03 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0022% | $36.24 | $36,236 | +16.64% | |
| 2016-09-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0023% | $35.40 | $35,404 | +18.93% | |
| 2016-08-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0022% | $43.27 | $43,267 | -3.4% | |
| 2016-07-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0022% | $40.09 | $40,089 | +3.6% | |
| 2016-06-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0022% | $39.69 | $39,685 | +3.4% | |
| 2016-05-02 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0022% | $38.95 | $38,952 | +4.34% | |
| 2016-04-01 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Legal Officer | 1,000 0.0022% | $39.00 | $38,996 | +1% |