Dave Schaeffer, Chairman, CEO, and President of Cogent Communications Holdings ($CCOI), sold shares on the open market thirty-seven times in the last year, totaling $132.3 million. His most recent sale occurred on August 8, 2025. These CCOI insider sales rank 122nd among 11,678 individuals in our database, far exceeding the average of $8.6 million per seller and 6.4 transactions. Schaeffer made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 1, 2026 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | G | common stock | 29333 | $0.00 | 868,133.0000 | 47,928,826 | 3.27% | 0.06% |
| April 1, 2026 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | G | common stock | 29333 | $0.00 | 868,133.0000 | 47,928,826 | 3.50% | 0.06% |
| April 1, 2026 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | D | common stock | 58667 | $0.00 | 897,466.0000 | 47,928,826 | 6.14% | 0.12% |
| Dec. 31, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | A | common stock | 229657 | $0.00 | 1,156,457.0000 | 47,603,287 | 24.78% | 0.48% |
| Dec. 31, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | G | common stock | 229657 | $0.00 | 926,800.0000 | 47,603,287 | 19.86% | 0.48% |
| Dec. 31, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | G | common stock | 229657 | $0.00 | 926,800.0000 | 47,603,287 | 32.94% | 0.48% |
| Aug. 8, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 818909 | $27.50 | 697,143.0000 | 47,592,836 | 54.02% | 1.72% |
| Aug. 7, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 1840669 | $32.60 | 1,516,052.0000 | 47,592,836 | 54.84% | 3.87% |
| June 13, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 10000 | $47.34 | 3,426,721.0000 | 47,676,735 | 0.29% | 0.02% |
| June 16, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 45000 | $47.14 | 3,381,721.0000 | 47,676,735 | 1.31% | 0.09% |
| June 16, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 25000 | $47.05 | 3,356,721.0000 | 47,676,735 | 0.74% | 0.05% |
| June 13, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 45000 | $47.42 | 3,436,721.0000 | 47,676,735 | 1.29% | 0.09% |
| June 12, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 45000 | $47.87 | 3,491,721.0000 | 47,676,735 | 1.27% | 0.09% |
| June 12, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 10000 | $47.83 | 3,481,721.0000 | 47,676,735 | 0.29% | 0.02% |
| June 11, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 45000 | $48.55 | 3,546,721.0000 | 47,676,735 | 1.25% | 0.09% |
| June 11, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 10000 | $48.35 | 3,536,721.0000 | 47,676,735 | 0.28% | 0.02% |
| June 10, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 40000 | $48.70 | 3,606,721.0000 | 47,676,735 | 1.10% | 0.08% |
| June 10, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 15000 | $48.63 | 3,591,721.0000 | 47,676,735 | 0.42% | 0.03% |
| June 9, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 40000 | $48.51 | 3,661,721.0000 | 47,676,735 | 1.08% | 0.08% |
| June 9, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 15000 | $48.99 | 3,646,721.0000 | 47,676,735 | 0.41% | 0.03% |
| June 6, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 50000 | $47.78 | 3,731,721.0000 | 47,676,735 | 1.32% | 0.10% |
| June 6, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 30000 | $47.78 | 3,701,721.0000 | 47,676,735 | 0.80% | 0.06% |
| June 5, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 40000 | $47.29 | 3,816,721.0000 | 47,676,735 | 1.04% | 0.08% |
| June 5, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 35000 | $47.31 | 3,781,721.0000 | 47,676,735 | 0.92% | 0.07% |
| June 4, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 50000 | $47.76 | 3,881,721.0000 | 47,676,735 | 1.27% | 0.10% |
| June 4, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 25000 | $47.76 | 3,856,721.0000 | 47,676,735 | 0.64% | 0.05% |
| June 3, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 50000 | $47.00 | 3,946,721.0000 | 47,676,735 | 1.25% | 0.10% |
| June 3, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 15000 | $46.86 | 3,931,721.0000 | 47,676,735 | 0.38% | 0.03% |
| June 2, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 15000 | $46.13 | 3,996,721.0000 | 47,676,735 | 0.37% | 0.03% |
| June 2, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 50000 | $46.38 | 4,011,721.0000 | 47,676,735 | 1.23% | 0.10% |
| May 30, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 25000 | $45.90 | 4,061,721.0000 | 47,676,735 | 0.61% | 0.05% |
| May 29, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 25000 | $46.90 | 4,086,721.0000 | 47,676,735 | 0.61% | 0.05% |
| May 28, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 20000 | $47.41 | 4,111,721.0000 | 47,676,735 | 0.48% | 0.04% |
| May 27, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 20000 | $48.67 | 4,131,721.0000 | 47,676,735 | 0.48% | 0.04% |
| May 23, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 25000 | $46.93 | 4,151,721.0000 | 47,676,735 | 0.60% | 0.05% |
| May 22, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 25000 | $46.27 | 4,176,721.0000 | 47,676,735 | 0.59% | 0.05% |
| May 21, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 40000 | $46.81 | 4,201,721.0000 | 47,676,735 | 0.94% | 0.08% |
| May 20, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 15000 | $49.96 | 4,241,721.0000 | 47,676,735 | 0.35% | 0.03% |
| May 16, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 15000 | $51.00 | 4,256,721.0000 | 47,676,735 | 0.35% | 0.03% |
| May 15, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 40000 | $50.38 | 4,271,721.0000 | 47,676,735 | 0.93% | 0.08% |
| May 14, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 30000 | $50.64 | 4,311,721.0000 | 47,676,735 | 0.69% | 0.06% |
| May 12, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 11372 | $50.10 | 4,384,349.0000 | 47,676,735 | 0.26% | 0.02% |
| May 13, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 42628 | $50.45 | 4,341,721.0000 | 47,676,735 | 0.97% | 0.09% |
| April 4, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | D | common stock | 48317 | $0.00 | 4,395,721.0000 | 47,676,735 | 1.09% | 0.10% |
| March 4, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 60000 | $71.77 | 4,444,038.0000 | 47,627,873 | 1.33% | 0.13% |
| Jan. 14, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | A | common stock | 96000 | $0.00 | 4,504,038.0000 | 47,627,873 | 2.18% | 0.20% |
| Jan. 14, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | A | common stock | 84000 | $0.00 | 4,408,038.0000 | 47,627,873 | 1.94% | 0.18% |
| Dec. 16, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | D | common stock | 20000 | $75.88 | 4,228,038.0000 | 47,426,131 | 0.47% | 0.04% |
| Nov. 25, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 35636 | $83.76 | 4,272,402.0000 | 47,426,131 | 0.83% | 0.08% |
| Nov. 26, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 24364 | $82.69 | 4,248,038.0000 | 47,426,131 | 0.57% | 0.05% |
| Sept. 10, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 65000 | $71.75 | 4,308,038.0000 | 47,511,613 | 1.49% | 0.14% |
| Aug. 27, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 60000 | $72.82 | 4,373,038.0000 | 47,511,613 | 1.35% | 0.13% |
| June 14, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 60000 | $51.78 | 4,433,038.0000 | 47,416,268 | 1.34% | 0.13% |
| June 12, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 60000 | $54.60 | 4,493,038.0000 | 47,416,268 | 1.32% | 0.13% |
| May 13, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 50000 | $59.44 | 4,553,038.0000 | 47,416,268 | 1.09% | 0.11% |
| April 1, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | D | common stock | 50165 | $0.00 | 4,603,038.0000 | 47,416,268 | 1.08% | 0.11% |
| March 15, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 26174 | $64.21 | 4,653,203.0000 | 47,837,512 | 0.56% | 0.05% |
| March 13, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 30000 | $67.52 | 4,679,377.0000 | 47,837,512 | 0.64% | 0.06% |
| March 12, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 50000 | $68.12 | 4,709,377.0000 | 47,837,512 | 1.05% | 0.10% |
| March 11, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 35000 | $67.93 | 4,759,377.0000 | 47,837,512 | 0.73% | 0.07% |
| March 11, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | D | common stock | 35000 | $67.93 | 4,759,377.0000 | 47,837,512 | 0.73% | 0.07% |
| March 12, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | D | common stock | 50000 | $68.12 | 4,709,377.0000 | 47,837,512 | 1.05% | 0.10% |
| March 6, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | D | common stock | 21387 | $0.00 | 4,794,377.0000 | 47,837,512 | 0.44% | 0.04% |
| March 6, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 8826 | $72.55 | 4,815,764.0000 | 47,837,512 | 0.18% | 0.02% |
| Jan. 3, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | A | common stock | 84000 | $0.00 | 4,824,590.0000 | 47,837,512 | 1.77% | 0.18% |
| Jan. 3, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | A | common stock | 96000 | $0.00 | 4,920,590.0000 | 47,837,512 | 1.99% | 0.20% |
| Dec. 13, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 20000 | $69.99 | 4,740,590.0000 | 47,227,338 | 0.42% | 0.04% |
| Dec. 1, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 36604 | $65.18 | 4,760,590.0000 | 47,227,338 | 0.76% | 0.08% |
| Nov. 30, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 3396 | $64.31 | 4,797,194.0000 | 47,227,338 | 0.07% | 0.01% |
| Nov. 14, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 40000 | $66.37 | 4,800,590.0000 | 47,227,338 | 0.83% | 0.08% |
| Sept. 15, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 18191 | $65.82 | 4,840,590.0000 | 47,526,207 | 0.37% | 0.04% |
| Sept. 13, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 16753 | $66.70 | 4,858,781.0000 | 47,526,207 | 0.34% | 0.04% |
| Sept. 12, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 28247 | $66.97 | 4,875,534.0000 | 47,526,207 | 0.58% | 0.06% |
| Sept. 8, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 41691 | $67.72 | 4,907,090.0000 | 47,526,207 | 0.84% | 0.09% |
| Sept. 11, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 3309 | $67.16 | 4,903,781.0000 | 47,526,207 | 0.07% | 0.01% |
| June 6, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 25605 | $62.25 | 4,998,176.0000 | 47,381,226 | 0.51% | 0.05% |
| June 7, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 42334 | $62.30 | 4,955,842.0000 | 47,381,226 | 0.85% | 0.09% |
| June 8, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 7061 | $62.44 | 4,948,781.0000 | 47,381,226 | 0.14% | 0.01% |
| May 10, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | CHAIRMAN, CEO, AND PRESIDENT | S | common stock | 35000 | $65.38 | 5,023,781.0000 | 47,381,226 | 0.69% | 0.07% |
| Jan. 3, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | Chairman, President & CEO | A | common stock | 88000 | $0.00 | 5,058,781.0000 | 47,207,298 | 1.77% | 0.19% |
| Jan. 3, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | SCHAEFFER DAVE | Chairman, President & CEO | A | common stock | 72000 | $0.00 | 4,970,781.0000 | 47,207,298 | 1.47% | 0.15% |