| 2023-08-11 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & CHIEF TECHNICAL OFFICER | 4,000 0.0082% | $69.07 | $276,295 | -5.45% | |
| 2023-08-10 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & CHIEF TECHNICAL OFFICER | 5,000 0.0103% | $65.32 | $326,603 | -0.11% | |
| 2022-11-22 | Sale | Cogent Communications Holdings, Inc. CCOI | VP & Chief Technical Officer | 600 0.0013% | $58.50 | $35,100 | +11.94% |