Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Cogent Communications Holdings, Inc. (CCOI) since 2014 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Cogent Communications Holdings, Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 1158324.
Total stock buying since 2014: $1,106,589.
Total stock sales since 2014: $224,986,741.
Total stock option exercises since 2014: $18,544.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 0 | $0 | 3,603,209 | $127,911,718 | 0 | $0 |
| 2024 | 10,000 | $526,130 | 472,031 | $31,438,419 | 0 | $0 |
| 2023 | 0 | $0 | 432,000 | $28,445,709 | 0 | $0 |
| 2022 | 10,000 | $548,750 | 53,087 | $3,077,876 | 0 | $0 |
| 2021 | 0 | $0 | 65,257 | $4,781,778 | 0 | $0 |
| 2020 | 0 | $0 | 65,396 | $4,803,582 | 0 | $0 |
| 2019 | 0 | $0 | 127,330 | $7,316,631 | 0 | $0 |
| 2018 | 0 | $0 | 105,400 | $5,389,555 | 0 | $0 |
| 2017 | 700 | $31,709 | 127,493 | $5,538,607 | 0 | $0 |
| 2016 | 0 | $0 | 91,355 | $3,487,303 | 0 | $0 |
| 2015 | 0 | $0 | 79,500 | $2,725,563 | 3,800 | $18,544 |
| 2014 | 0 | $0 | 2,000 | $70,000 | 0 | $0 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-09 | 0 | $0 | 4,900 | $181,201 | 0 | $0 |
| 2025-08 | 0 | $0 | 2,665,578 | $82,743,906 | 0 | $0 |
| 2025-06 | 0 | $0 | 649,300 | $30,960,696 | 0 | $0 |
| 2025-05 | 0 | $0 | 271,750 | $13,185,013 | 0 | $0 |
| 2025-03 | 0 | $0 | 11,681 | $840,902 | 0 | $0 |
| 2024-12 | 0 | $0 | 15,840 | $1,057,920 | 0 | $0 |
| 2024-11 | 0 | $0 | 74,196 | $6,168,386 | 0 | $0 |
| 2024-09 | 0 | $0 | 72,270 | $5,175,211 | 0 | $0 |
| 2024-08 | 0 | $0 | 63,605 | $4,633,584 | 0 | $0 |
| 2024-06 | 10,000 | $526,130 | 124,800 | $6,643,511 | 0 | $0 |
| 2024-05 | 0 | $0 | 52,000 | $3,089,802 | 0 | $0 |
| 2024-03 | 0 | $0 | 69,320 | $4,670,005 | 0 | $0 |
| 2023-12 | 0 | $0 | 79,994 | $5,379,335 | 0 | $0 |
| 2023-11 | 0 | $0 | 64,275 | $4,258,736 | 0 | $0 |
| 2023-09 | 0 | $0 | 117,361 | $7,890,853 | 0 | $0 |
| 2023-08 | 0 | $0 | 10,200 | $686,031 | 0 | $0 |
| 2023-06 | 0 | $0 | 88,372 | $5,514,007 | 0 | $0 |
| 2023-05 | 0 | $0 | 55,538 | $3,659,762 | 0 | $0 |
| 2023-04 | 0 | $0 | 500 | $35,000 | 0 | $0 |
| 2023-03 | 0 | $0 | 10,760 | $685,985 | 0 | $0 |
| 2023-02 | 0 | $0 | 2,000 | $140,000 | 0 | $0 |
| 2023-01 | 0 | $0 | 3,000 | $196,000 | 0 | $0 |
| 2022-12 | 0 | $0 | 18,340 | $1,045,446 | 0 | $0 |
| 2022-11 | 10,000 | $548,750 | 7,412 | $429,548 | 0 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-09-02 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 4,900 | 36.98 | 181,201 |
| 2025-08-21 | Kennedy Sheryl Lynn | Sale | 4,000 | 36.35 | 145,400 |
| 2025-08-08 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 818,909 | 27.50 | 22,519,997 |
| 2025-08-07 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 1,840,669 | 32.60 | 60,005,809 |
| 2025-06-16 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 70,000 | 47.10 | 3,296,790 |
| 2025-06-13 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 55,000 | 47.38 | 2,605,735 |
| 2025-06-12 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 55,000 | 47.85 | 2,631,805 |
| 2025-06-11 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 55,000 | 48.45 | 2,664,695 |
| 2025-06-10 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 55,000 | 48.67 | 2,676,630 |
| 2025-06-09 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 4,900 | 48.04 | 235,396 |
| 2025-06-09 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 55,000 | 48.75 | 2,681,360 |
| 2025-06-06 | Kilmer Henry W (VP OF NETWORK STRATEGY) | Sale | 2,400 | 47.95 | 115,080 |
| 2025-06-06 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 80,000 | 47.78 | 3,822,160 |
| 2025-06-05 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 75,000 | 47.30 | 3,547,350 |
| 2025-06-04 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 2,000 | 47.50 | 95,000 |
| 2025-06-04 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 75,000 | 47.76 | 3,581,925 |
| 2025-06-02 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 65,000 | 46.26 | 3,006,770 |
| 2025-05-29 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 25,000 | 46.90 | 1,172,600 |
| 2025-05-28 | Ferguson Lewis H | Sale | 1,100 | 47.57 | 52,327 |
| 2025-05-28 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 100 | 47.66 | 4,766 |
| 2025-05-28 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 20,000 | 47.41 | 948,180 |
| 2025-05-27 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 20,000 | 48.67 | 973,319 |
| 2025-05-23 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 25,000 | 46.93 | 1,173,325 |
| 2025-05-22 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 25,000 | 46.27 | 1,156,775 |
| 2025-05-21 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 40,000 | 46.81 | 1,872,240 |
| 2025-05-20 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 15,000 | 49.96 | 749,355 |
| 2025-05-16 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 100 | 50.41 | 5,041 |
| 2025-05-16 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 15,000 | 50.99 | 764,925 |
| 2025-05-14 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 30,000 | 50.64 | 1,519,140 |
| 2025-05-13 | Kennedy Sheryl Lynn | Sale | 1,450 | 50.19 | 72,772 |
| 2025-05-13 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 42,628 | 50.45 | 2,150,454 |
| 2025-05-12 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 11,372 | 50.10 | 569,794 |
| 2025-03-12 | Ferguson Lewis H | Sale | 956 | 69.36 | 66,312 |
| 2025-03-07 | Kilmer Henry W (VP OF NETWORK STRATEGY) | Sale | 2,400 | 72.57 | 174,167 |
| 2025-03-04 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 2,000 | 71.67 | 143,348 |
| 2025-03-03 | Kennedy Sheryl Lynn | Sale | 1,425 | 72.96 | 103,967 |
| 2025-03-03 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 4,900 | 72.06 | 353,108 |
| 2024-12-12 | Kilmer Henry W (VP OF NETWORK STRATEGY) | Sale | 4,800 | 75.61 | 362,942 |
| 2024-12-09 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 1,920 | 76.60 | 147,066 |
| 2024-12-02 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 1,920 | 81.42 | 156,328 |
| 2024-12-02 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 4,800 | 81.58 | 391,584 |
| 2024-12-01 | Kilmer Henry W (VP OF NETWORK STRATEGY) | Sale | 2,400 | .00 | 0 |
| 2024-11-26 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 24,364 | 82.69 | 2,014,537 |
| 2024-11-25 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 35,636 | 83.76 | 2,984,942 |
| 2024-11-21 | Bath Blake | Sale | 6,220 | 83.69 | 520,564 |
| 2024-11-18 | Ferguson Lewis H | Sale | 846 | 81.76 | 69,170 |
| 2024-11-12 | Chang John B. (VP & CHIEF LEGAL OFFICER) | Sale | 2,280 | 80.41 | 183,327 |
| 2024-11-11 | Howard Eve N | Sale | 3,500 | 82.02 | 287,070 |
| 2024-11-11 | Kennedy Sheryl Lynn | Sale | 1,350 | 80.58 | 108,776 |
| 2024-09-12 | Chang John B. (VP & CHIEF LEGAL OFFICER) | Sale | 1,400 | 71.67 | 100,338 |
| 2024-09-10 | Kennedy Sheryl Lynn | Sale | 1,550 | 71.06 | 110,138 |
| 2024-09-10 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 65,000 | 71.75 | 4,663,555 |
| 2024-09-04 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 1,920 | 69.77 | 133,958 |
| 2024-09-03 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 2,400 | 69.68 | 167,222 |
| 2024-08-27 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 60,000 | 72.82 | 4,368,960 |
| 2024-08-23 | Chang John B. (VP & CHIEF LEGAL OFFICER) | Sale | 2,055 | 74.00 | 152,070 |
| 2024-08-22 | Ferguson Lewis H | Sale | 1,550 | 72.62 | 112,554 |
| 2024-06-14 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 60,000 | 51.78 | 3,106,860 |
| 2024-06-12 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 60,000 | 54.60 | 3,276,000 |
| 2024-06-11 | Montagner Marc | Buy | 10,000 | 52.61 | 526,130 |
| 2024-06-10 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 2,400 | 52.60 | 126,251 |
| 2024-06-06 | Kilmer Henry W (VP OF NETWORK STRATEGY) | Sale | 2,400 | 56.00 | 134,400 |
| 2024-05-21 | Ferguson Lewis H | Sale | 2,000 | 58.90 | 117,802 |
| 2024-05-13 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 50,000 | 59.44 | 2,972,000 |
| 2024-03-15 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 26,174 | 64.21 | 1,680,632 |
| 2024-03-13 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 30,000 | 67.52 | 2,025,599 |
| 2024-03-06 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 8,826 | 72.55 | 640,326 |
| 2024-03-05 | Kilmer Henry W (VP OF NETWORK STRATEGY) | Sale | 2,400 | 73.47 | 176,340 |
| 2024-03-01 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 1,920 | 76.62 | 147,108 |
| 2023-12-26 | Chang John B. (VP & CHIEF LEGAL OFFICER) | Sale | 3,550 | 76.00 | 269,800 |
| 2023-12-21 | Chang John B. (VP & CHIEF LEGAL OFFICER) | Sale | 1,000 | 74.00 | 74,000 |
| 2023-12-14 | Chang John B. (VP & CHIEF LEGAL OFFICER) | Sale | 500 | 72.00 | 36,000 |
| 2023-12-13 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 20,000 | 69.99 | 1,399,800 |
| 2023-12-07 | Kilmer Henry W (VP OF NETWORK STRATEGY) | Sale | 4,800 | 67.94 | 326,131 |
| 2023-12-05 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 1,920 | 66.12 | 126,958 |
| 2023-12-04 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 9,700 | 65.84 | 638,648 |
| 2023-12-01 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 1,920 | 63.70 | 122,296 |
| 2023-12-01 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 36,604 | 65.18 | 2,385,702 |
| 2023-11-30 | Ferguson Lewis H | Sale | 950 | 64.59 | 61,365 |
| 2023-11-30 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 3,396 | 64.31 | 218,410 |
| 2023-11-20 | Bath Blake | Sale | 9,000 | 67.14 | 604,251 |
| 2023-11-16 | Bath Blake | Sale | 379 | 67.00 | 25,393 |
| 2023-11-14 | Montagner Marc | Sale | 10,550 | 65.83 | 694,517 |
| 2023-11-14 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 40,000 | 66.37 | 2,654,800 |
| 2023-09-15 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 18,191 | 65.82 | 1,197,368 |
| 2023-09-13 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 16,753 | 66.70 | 1,117,408 |
| 2023-09-12 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 28,247 | 66.97 | 1,891,645 |
| 2023-09-11 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 3,309 | 67.16 | 222,239 |
| 2023-09-08 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 41,691 | 67.72 | 2,823,231 |
| 2023-09-07 | Kilmer Henry W (VP OF NETWORK STRATEGY) | Sale | 2,400 | 69.16 | 165,984 |
| 2023-09-05 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 4,850 | 69.43 | 336,735 |
| 2023-09-01 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 1,920 | 70.96 | 136,243 |
| 2023-08-29 | Ferguson Lewis H | Sale | 650 | 69.64 | 45,266 |
| 2023-08-24 | Kennedy Sheryl Lynn | Sale | 550 | 68.84 | 37,864 |
| 2023-08-11 | Kapp David Allen (VP & CHIEF TECHNICAL OFFICER) | Sale | 4,000 | 69.07 | 276,296 |
| 2023-08-10 | Kapp David Allen (VP & CHIEF TECHNICAL OFFICER) | Sale | 5,000 | 65.32 | 326,605 |
| 2023-06-14 | Brooks Steven D | Sale | 4,202 | 65.00 | 273,130 |
| 2023-06-08 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 7,061 | 62.44 | 440,881 |
| 2023-06-07 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 42,334 | 62.30 | 2,637,450 |
| 2023-06-06 | Kilmer Henry W (VP OF IP ENGINEERING) | Sale | 2,400 | 62.23 | 149,352 |
| 2023-06-06 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 25,605 | 62.25 | 1,593,911 |
| 2023-06-05 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 4,850 | 62.27 | 302,033 |
| 2023-06-01 | Bubeck James (CHIEF REVENUE OFFICER) | Sale | 1,920 | 61.07 | 117,250 |
| 2023-05-30 | Kennedy Sheryl Lynn | Sale | 1,100 | 63.14 | 69,450 |
| 2023-05-30 | Ferguson Lewis H | Sale | 640 | 63.23 | 40,470 |
| 2023-05-11 | Brooks Steven D | Sale | 3,798 | 65.00 | 246,873 |
| 2023-05-10 | Schaeffer Dave (CHAIRMAN, CEO, AND PRESIDENT) | Sale | 35,000 | 65.38 | 2,288,370 |
| 2023-05-09 | Weed Thaddeus Gerard (VICE PRESIDENT, CFO) | Sale | 10,000 | 64.96 | 649,599 |
| 2023-05-03 | Chang John B. (VP & CHIEF LEGAL OFFICER) | Sale | 5,000 | 73.00 | 365,000 |
| 2023-04-17 | Chang John B. (VP & CHIEF LEGAL OFFICER) | Sale | 500 | 70.00 | 35,000 |
| 2023-03-13 | Kennedy Sheryl Lynn | Sale | 600 | 61.66 | 36,998 |
| 2023-03-13 | Ferguson Lewis H | Sale | 990 | 61.49 | 60,880 |
| 2023-03-07 | Kilmer Henry W (VP of IP Engineering) | Sale | 2,400 | 63.52 | 152,436 |
| 2023-03-03 | Weed Thaddeus Gerard (VP, CFO, Treasurer) | Sale | 4,850 | 64.30 | 311,855 |
| 2023-03-01 | Bubeck James (Chief Revenue Officer) | Sale | 1,920 | 64.49 | 123,816 |
| 2023-02-01 | Chang John B. (Chief Legal Officer) | Sale | 2,000 | 70.00 | 140,000 |
| 2023-01-26 | Chang John B. (Chief Legal Officer) | Sale | 500 | 68.00 | 34,000 |
| 2023-01-17 | Chang John B. (Chief Legal Officer) | Sale | 1,000 | 66.00 | 66,000 |
| 2023-01-12 | Chang John B. (Chief Legal Officer) | Sale | 1,500 | 64.00 | 96,000 |
| 2022-12-06 | Kilmer Henry W (VP of IP Engineering) | Sale | 4,800 | 57.36 | 275,332 |
| 2022-12-05 | Bubeck James (Chief Revenue Officer) | Sale | 1,920 | 57.45 | 110,304 |
| 2022-12-02 | Weed Thaddeus Gerard (VP, CFO Treasurer) | Sale | 9,700 | 56.51 | 548,166 |
| 2022-12-01 | Bubeck James (Chief Revenue Officer) | Sale | 1,920 | 58.15 | 111,644 |
| 2022-11-29 | Ferguson Lewis H | Sale | 1,050 | 57.50 | 60,375 |
| 2022-11-22 | Kapp David Allen (VP & Chief Technical Officer) | Sale | 600 | 58.50 | 35,100 |
| 2022-11-21 | Kennedy Sheryl Lynn | Sale | 962 | 57.83 | 55,630 |
| 2022-11-16 | Kummer Raymond B (CTO; VP Optical Transport) | Sale | 4,800 | 58.01 | 278,443 |
| 2022-11-09 | Montagner Marc | Buy | 10,000 | 54.88 | 548,750 |
| 2022-09-09 | Weed Thaddeus Gerard (VP, CFO Treasurer) | Sale | 4,850 | 52.35 | 253,878 |
| 2022-09-07 | Kilmer Henry W (VP of IP Engineering) | Sale | 2,400 | 53.85 | 129,247 |
| 2022-09-01 | Bubeck James (Chief Revenue Officer) | Sale | 1,920 | 53.51 | 102,733 |
| 2022-06-07 | Kilmer Henry W (VP of IP Engineering) | Sale | 2,400 | 59.20 | 142,082 |
| 2022-06-02 | Kennedy Sheryl Lynn | Sale | 1,350 | 60.88 | 82,193 |
| 2022-06-02 | Weed Thaddeus Gerard (VP, CFO Treasurer) | Sale | 4,850 | 60.49 | 293,376 |
| 2022-06-01 | Bubeck James (Chief Revenue Officer) | Sale | 1,920 | 60.02 | 115,248 |
| 2022-05-31 | Ferguson Lewis H | Sale | 950 | 60.72 | 57,684 |
| 2022-04-06 | Chang John B. | Sale | 250 | 72.00 | 18,000 |
| 2022-04-05 | Chang John B. | Sale | 250 | 70.00 | 17,500 |
| 2022-04-01 | Chang John B. | Sale | 150 | 68.00 | 10,200 |
| 2022-03-31 | Chang John B. (VP & Chief Legal Officer) | Sale | 150 | 66.00 | 9,900 |
| 2022-03-17 | Chang John B. (VP & Chief Legal Officer) | Sale | 600 | 62.96 | 37,776 |
| 2022-03-09 | Ferguson Lewis H | Sale | 725 | 63.27 | 45,867 |
| 2022-03-08 | Kilmer Henry W (VP of IP Engineering) | Sale | 2,400 | 62.72 | 150,532 |
| 2022-03-02 | Wallace Sean Robert (VP, CFO & Treasurer) | Sale | 250 | 63.30 | 15,824 |
| 2022-03-01 | Bubeck James (Chief Revenue Officer) | Sale | 1,920 | 62.94 | 120,842 |
| 2021-12-14 | Bubeck James (Chief Revenue Officer) | Sale | 1,920 | 76.77 | 147,398 |
| 2021-12-13 | Kilmer Henry W (VP of IP Engineering) | Sale | 2,400 | 77.26 | 185,431 |
| 2021-12-08 | Ferguson Lewis H | Sale | 900 | 77.31 | 69,579 |
| 2021-12-07 | Kilmer Henry W (VP of IP Engineering) | Sale | 2,400 | 77.90 | 186,955 |
| 2021-12-02 | Wallace Sean Robert (VP, CFO & Treasurer) | Sale | 225 | 75.18 | 16,915 |
Insider trading activities including stock purchases, stock sales, and option exercises of CCOI listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Cogent Communications Holdings, Inc. (symbol CCOI, CIK number 1158324) see the Securities and Exchange Commission (SEC) website.