| 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. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2026-09-02 | Sell | 4,850 | 9.37 | 45,445 | 2026-09-03 09:45:23 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2026-06-16 | Sell | 4,850 | 16.79 | 81,434 | 2026-06-16 16:25:54 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2026-06-15 | Sell | 2,400 | 17.01 | 40,824 | 2026-06-15 16:24:08 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2026-05-28 | Sell | 2,800 | 20.36 | 57,008 | 2026-05-28 16:01:47 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2026-05-14 | Sell | 3,300 | 16.22 | 53,518 | 2026-05-18 16:12:00 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2026-03-06 | Sell | 2,400 | 23.35 | 56,040 | 2026-03-09 08:52:46 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2026-03-05 | Sell | 2,206 | 23.03 | 50,804 | 2026-03-05 16:57:50 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2026-03-05 | Sell | 3,300 | 22.99 | 75,867 | 2026-03-05 16:42:31 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2026-03-05 | Sell | 4,850 | 22.63 | 109,756 | 2026-03-05 16:20:48 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2025-12-11 | Sell | 7,300 | 23.99 | 175,127 | 2025-12-12 16:21:03 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2025-12-08 | Sell | 4,800 | 19.79 | 94,992 | 2025-12-08 16:12:03 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2025-12-02 | Sell | 4,000 | 20.34 | 81,341 | 2025-12-02 19:48:26 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2025-12-01 | Sell | 2,400 | 0.00 | 0 | 2025-12-02 16:25:54 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2025-11-11 | Sell | 2,400 | 21.34 | 51,221 | 2025-11-12 13:45:32 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2025-09-05 | Sell | 2,400 | 36.99 | 88,776 | 2025-09-05 16:33:59 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2025-09-02 | Sell | 4,900 | 36.98 | 181,202 | 2025-09-02 16:23:31 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2025-08-21 | Sell | 2,000 | 36.35 | 72,700 | 2025-08-21 16:54:58 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-08-08 | Sell | 818,909 | 27.50 | 22,519,998 | 2025-08-11 17:11:55 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-08-08 | Sell | 818,909 | 27.50 | 22,519,998 | 2025-08-11 17:11:55 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-08-07 | Sell | 1,840,669 | 32.60 | 60,005,808 | 2025-08-08 17:03:29 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-08-07 | Sell | 1,840,669 | 32.60 | 60,005,808 | 2025-08-08 17:03:29 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-16 | Sell | 70,000 | 47.11 | 3,297,609 | 2025-06-16 16:53:17 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-13 | Sell | 55,000 | 47.40 | 2,607,204 | 2025-06-16 10:03:22 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-12 | Sell | 55,000 | 47.86 | 2,632,372 | 2025-06-12 17:29:08 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-11 | Sell | 55,000 | 48.51 | 2,668,135 | 2025-06-12 10:11:07 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-10 | Sell | 55,000 | 48.68 | 2,677,490 | 2025-06-10 18:15:38 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-09 | Sell | 55,000 | 48.64 | 2,675,347 | 2025-06-09 18:23:12 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2025-06-09 | Sell | 4,900 | 48.04 | 235,396 | 2025-06-09 16:51:18 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2025-06-06 | Sell | 2,400 | 47.95 | 115,080 | 2025-06-09 16:49:28 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-06 | Sell | 80,000 | 47.78 | 3,822,124 | 2025-06-09 16:48:07 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-05 | Sell | 75,000 | 47.30 | 3,547,316 | 2025-06-09 09:09:57 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2025-06-04 | Sell | 2,000 | 47.50 | 94,999 | 2025-06-06 09:16:12 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-04 | Sell | 75,000 | 47.76 | 3,581,983 | 2025-06-05 17:08:36 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-03 | Sell | 65,000 | 46.97 | 3,052,867 | 2025-06-04 16:06:40 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-06-02 | Sell | 65,000 | 46.33 | 3,011,141 | 2025-06-03 16:28:59 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-30 | Sell | 25,000 | 45.90 | 1,147,425 | 2025-06-02 16:08:04 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-29 | Sell | 25,000 | 46.90 | 1,172,593 | 2025-05-30 16:03:18 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-28 | Sell | 20,000 | 47.41 | 948,174 | 2025-05-29 16:30:50 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2025-05-28 | Sell | 100 | 47.66 | 4,767 | 2025-05-29 16:05:16 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2025-05-28 | Sell | 1,100 | 47.57 | 52,327 | 2025-05-29 16:04:23 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-27 | Sell | 20,000 | 48.67 | 973,322 | 2025-05-28 16:29:57 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-23 | Sell | 25,000 | 46.93 | 1,173,318 | 2025-05-27 16:13:43 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-22 | Sell | 25,000 | 46.27 | 1,156,768 | 2025-05-23 16:02:52 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-21 | Sell | 40,000 | 46.81 | 1,872,248 | 2025-05-22 16:25:25 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-20 | Sell | 15,000 | 49.96 | 749,348 | 2025-05-21 16:20:31 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-16 | Sell | 15,000 | 50.99 | 764,925 | 2025-05-19 16:21:56 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2025-05-16 | Sell | 100 | 50.41 | 5,041 | 2025-05-16 16:24:48 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-15 | Sell | 40,000 | 50.38 | 2,015,036 | 2025-05-16 16:04:46 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-14 | Sell | 30,000 | 50.64 | 1,519,140 | 2025-05-15 16:12:04 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-05-12 | Sell | 54,000 | 50.37 | 2,720,232 | 2025-05-14 16:17:51 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2025-05-13 | Sell | 1,450 | 50.19 | 72,773 | 2025-05-13 16:11:26 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2025-03-12 | Sell | 956 | 69.36 | 66,313 | 2025-03-13 17:43:50 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2025-03-07 | Sell | 2,400 | 72.57 | 174,168 | 2025-03-10 12:07:43 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2025-03-04 | Sell | 60,000 | 71.77 | 4,305,978 | 2025-03-05 16:40:00 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2025-03-04 | Sell | 2,000 | 71.67 | 143,348 | 2025-03-05 11:42:01 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2025-03-03 | Sell | 4,900 | 72.06 | 353,110 | 2025-03-04 09:22:10 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2025-03-03 | Sell | 1,425 | 72.96 | 103,967 | 2025-03-03 13:58:46 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2024-12-12 | Sell | 4,800 | 75.61 | 362,942 | 2024-12-13 09:19:48 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2024-12-09 | Sell | 1,920 | 76.60 | 147,065 | 2024-12-10 18:00:22 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2024-12-01 | Sell | 2,400 | 0.00 | 0 | 2024-12-04 10:16:45 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2024-12-01 | Sell | 1,920 | 81.42 | 156,329 | 2024-12-03 17:54:05 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2024-12-01 | Sell | 4,800 | 81.58 | 391,584 | 2024-12-03 16:10:13 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | 2024-11-25 | Sell | 60,000 | 83.32 | 4,999,480 | 2024-11-27 16:01:31 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Bath Blake | Directior | 2024-11-21 | Sell | 6,220 | 83.69 | 520,565 | 2024-11-21 16:02:22 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2024-11-18 | Sell | 846 | 81.76 | 69,171 | 2024-11-19 11:27:46 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Howard Eve N | Directior | 2024-11-11 | Sell | 3,500 | 82.02 | 287,070 | 2024-11-14 13:32:44 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | VP & CHIEF LEGAL OFFICER | 2024-11-12 | Sell | 2,280 | 80.41 | 183,328 | 2024-11-12 16:19:28 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2024-11-11 | Sell | 1,350 | 80.58 | 108,777 | 2024-11-12 08:46:48 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Chang John B. | VP & CHIEF LEGAL OFFICER | 2024-09-12 | Sell | 1,400 | 71.67 | 100,338 | 2024-09-13 16:45:33 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2024-06-14 | Sell | 60,000 | 51.78 | 3,106,830 | 2024-06-17 10:22:53 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2024-06-12 | Sell | 60,000 | 54.60 | 3,276,000 | 2024-06-13 11:13:11 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Montagner Marc | Directior | 2024-06-11 | Buy | 10,000 | 52.61 | 526,130 | 2024-06-11 16:38:54 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | WEED THADDEUS GERARD | VICE PRESIDENT, CFO | 2024-06-10 | Sell | 2,400 | 52.60 | 126,252 | 2024-06-10 13:50:05 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | KILMER HENRY W | VP OF NETWORK STRATEGY | 2024-06-06 | Sell | 2,400 | 56.00 | 134,400 | 2024-06-07 10:16:49 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | BUBECK JAMES | CHIEF REVENUE OFFICER | 2024-06-03 | Sell | 1,920 | 58.97 | 113,221 | 2024-06-04 16:16:42 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | Kennedy Sheryl Lynn | Directior | 2024-05-23 | Sell | 1,640 | 57.79 | 94,782 | 2024-05-23 16:58:20 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | FERGUSON Lewis H | Directior | 2024-05-21 | Sell | 2,000 | 58.90 | 117,802 | 2024-05-22 18:11:45 |
| CCOI | COGENT COMMUNICATIONS HOLDINGS, INC. | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT 10% Owner | 2024-05-13 | Sell | 50,000 | 59.44 | 2,972,000 | 2024-05-14 16:42:04 |
| 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 |
