| Lastest Insider Transactions Of COGENT COMMUNICATIONS HOLDINGS, INC. ( CCOI ) |
| Symbol | Company Name | Insider Name | Title | Date | Transation | Share | Price | Amount | File Date |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2024-03-15 | Sell | 26,174 | 64.21 | 1,680,633 | 2024-03-18 11:12:26 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2024-03-14 | Sell | 30,000 | 67.52 | 2,025,600 | 2024-03-15 09:19:20 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2024-03-12 | Sell | 2,400 | 68.17 | 163,608 | 2024-03-14 11:03:24 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2024-03-12 | Sell | 50,000 | 68.12 | 3,406,000 | 2024-03-14 10:58:05 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2024-03-11 | Sell | 35,000 | 67.93 | 2,377,550 | 2024-03-14 10:53:42 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2024-03-06 | Sell | 8,826 | 72.55 | 640,326 | 2024-03-08 12:00:01 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2024-03-05 | Sell | 2,400 | 73.47 | 176,339 | 2024-03-06 09:38:29 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2024-03-01 | Sell | 1,920 | 76.62 | 147,108 | 2024-03-04 17:29:24 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | VP & CHIEF LEGAL OFFICER | 2023-12-26 | Sell | 3,550 | 76.00 | 269,800 | 2023-12-28 09:37:30 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | VP & CHIEF LEGAL OFFICER | 2023-12-21 | Sell | 1,000 | 74.00 | 74,000 | 2023-12-22 16:26:41 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | VP & CHIEF LEGAL OFFICER | 2023-12-14 | Sell | 500 | 72.00 | 36,000 | 2023-12-15 10:23:11 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-12-13 | Sell | 20,000 | 69.99 | 1,399,800 | 2023-12-14 10:14:20 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2023-12-07 | Sell | 4,800 | 67.94 | 326,132 | 2023-12-08 15:56:14 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2023-12-05 | Sell | 1,920 | 66.12 | 126,957 | 2023-12-06 13:49:19 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2023-12-01 | Sell | 1,920 | 63.70 | 122,297 | 2023-12-04 13:46:27 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2023-12-04 | Sell | 9,700 | 65.84 | 638,646 | 2023-12-04 11:59:42 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-12-01 | Sell | 36,604 | 65.18 | 2,385,691 | 2023-12-01 16:47:31 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-11-30 | Sell | 3,396 | 64.31 | 218,409 | 2023-12-01 09:41:30 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2023-11-30 | Sell | 950 | 64.59 | 61,365 | 2023-11-30 15:04:25 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2023-11-27 | Sell | 925 | 65.77 | 60,841 | 2023-11-27 16:30:07 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Bath Blake | Directior | 2023-11-20 | Sell | 9,000 | 67.14 | 604,251 | 2023-11-21 11:01:47 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Bath Blake | Directior | 2023-11-17 | Sell | 8,621 | 67.17 | 579,032 | 2023-11-17 16:59:44 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Bath Blake | Directior | 2023-11-16 | Sell | 379 | 67.00 | 25,393 | 2023-11-17 11:37:37 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-11-14 | Sell | 40,000 | 66.37 | 2,654,800 | 2023-11-16 16:27:00 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Montagner Marc | Directior | 2023-11-14 | Sell | 10,550 | 65.83 | 694,518 | 2023-11-15 15:20:00 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-09-15 | Sell | 18,191 | 65.82 | 1,197,364 | 2023-09-18 16:51:29 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-09-12 | Sell | 45,000 | 66.87 | 3,009,039 | 2023-09-14 09:53:35 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-09-08 | Sell | 45,000 | 67.68 | 3,045,470 | 2023-09-12 13:24:21 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2023-09-07 | Sell | 2,400 | 69.16 | 165,984 | 2023-09-08 12:57:11 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2023-09-05 | Sell | 4,850 | 69.43 | 336,736 | 2023-09-05 14:33:54 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2023-09-01 | Sell | 1,920 | 70.96 | 136,242 | 2023-09-05 12:57:20 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2023-08-29 | Sell | 650 | 69.64 | 45,266 | 2023-08-29 15:12:02 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2023-08-24 | Sell | 550 | 68.85 | 37,865 | 2023-08-25 12:01:07 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kapp David Allen | VP & CHIEF TECHNICAL OFFICER | 2023-08-10 | Sell | 9,000 | 66.99 | 602,898 | 2023-08-14 16:15:09 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BROOKS STEVEN D | Directior | 2023-06-14 | Sell | 4,202 | 65.00 | 273,130 | 2023-06-16 15:57:15 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-06-08 | Sell | 7,061 | 62.44 | 440,878 | 2023-06-08 17:57:17 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-06-06 | Sell | 67,939 | 62.28 | 4,231,373 | 2023-06-08 16:27:54 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF IP ENGINEERING | 2023-06-06 | Sell | 2,400 | 62.23 | 149,352 | 2023-06-07 16:42:36 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2023-06-05 | Sell | 4,850 | 62.28 | 302,035 | 2023-06-05 16:28:28 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2023-06-01 | Sell | 1,920 | 61.07 | 117,250 | 2023-06-02 14:19:40 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2023-05-30 | Sell | 1,100 | 63.14 | 69,451 | 2023-06-01 14:14:18 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2023-05-30 | Sell | 640 | 63.23 | 40,470 | 2023-05-31 14:19:41 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BROOKS STEVEN D | Directior | 2023-05-11 | Sell | 3,798 | 65.00 | 246,875 | 2023-05-12 16:16:15 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2023-05-10 | Sell | 35,000 | 65.38 | 2,288,370 | 2023-05-12 16:15:41 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2023-05-09 | Sell | 10,000 | 64.96 | 649,600 | 2023-05-10 13:10:36 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | VP & CHIEF LEGAL OFFICER | 2023-05-03 | Sell | 5,000 | 73.00 | 365,000 | 2023-05-04 12:08:15 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | VP & CHIEF LEGAL OFFICER | 2023-04-17 | Sell | 500 | 70.00 | 35,000 | 2023-04-18 14:41:29 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2023-03-13 | Sell | 600 | 61.66 | 36,998 | 2023-03-13 14:53:35 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2023-03-13 | Sell | 990 | 61.49 | 60,880 | 2023-03-13 14:23:32 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP of IP Engineering | 2023-03-07 | Sell | 2,400 | 63.51 | 152,436 | 2023-03-08 10:35:17 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VP, CFO, Treasurer | 2023-03-03 | Sell | 4,850 | 64.30 | 311,855 | 2023-03-06 12:23:45 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | Chief Revenue Officer | 2023-03-01 | Sell | 1,920 | 64.49 | 123,818 | 2023-03-03 10:20:42 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | Chief Legal Officer | 2023-02-01 | Sell | 2,000 | 70.00 | 140,000 | 2023-02-02 09:31:15 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | Chief Legal Officer | 2023-02-01 | Sell | 2,000 | 70.00 | 140,000 | 2023-02-02 09:31:15 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | Chief Legal Officer | 2023-01-26 | Sell | 500 | 68.00 | 34,000 | 2023-01-27 09:12:49 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | Chief Legal Officer | 2023-01-17 | Sell | 1,000 | 66.00 | 66,000 | 2023-01-18 10:30:08 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | Chief Legal Officer | 2023-01-12 | Sell | 1,500 | 64.00 | 96,000 | 2023-01-13 10:25:20 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | Chief Revenue Officer | 2022-12-05 | Sell | 1,920 | 57.45 | 110,303 | 2022-12-09 10:47:48 |
