Henry W. Kilmer, VP of Network Strategy at Cogent Communications Holdings ($CCOI), sold shares on the open market five times in the past year for a total of about $355,000. His most recent sale occurred on March 6, 2026. These transactions rank 7,205th among 11,678 insiders, below the average sale amount of $8.6 million across 6.4 transactions per insider. He made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 6, 2026 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $23.35 | 41,000.0000 | 47,928,826 | 5.53% | 0.01% |
| Dec. 31, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | A | common stock | 9600 | $0.00 | 43,400.0000 | 47,603,287 | 28.40% | 0.02% |
| Dec. 8, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 4800 | $19.79 | 33,800.0000 | 47,603,287 | 12.44% | 0.01% |
| Dec. 1, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $0.00 | 38,600.0000 | 47,603,287 | 6.63% | 0.01% |
| Sept. 5, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $36.99 | 36,200.0000 | 47,592,836 | 6.22% | 0.01% |
| Dec. 1, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | A | common stock | 2400 | $0.00 | 38,600.0000 | 47,426,131 | 6.63% | 0.01% |
| June 6, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $47.95 | 38,600.0000 | 47,676,735 | 5.85% | 0.01% |
| March 7, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $72.57 | 41,000.0000 | 47,627,873 | 5.53% | 0.01% |
| Jan. 9, 2025 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | A | common stock | 9600 | $0.00 | 43,400.0000 | 47,627,873 | 28.40% | 0.02% |
| Dec. 12, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 4800 | $75.61 | 33,800.0000 | 47,426,131 | 12.44% | 0.01% |
| Dec. 1, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $0.00 | 38,600.0000 | 47,426,131 | 6.63% | 0.01% |
| Sept. 4, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $69.51 | 36,200.0000 | 47,511,613 | 6.22% | 0.01% |
| June 6, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $56.00 | 38,600.0000 | 47,416,268 | 5.85% | 0.01% |
| March 5, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $73.47 | 41,000.0000 | 47,837,512 | 5.53% | 0.01% |
| Jan. 3, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | A | common stock | 5000 | $0.00 | 43,400.0000 | 47,837,512 | 13.02% | 0.01% |
| Jan. 3, 2024 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | A | common stock | 9600 | $0.00 | 38,400.0000 | 47,837,512 | 33.33% | 0.02% |
| Dec. 7, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 4800 | $67.94 | 28,800.0000 | 47,227,338 | 14.29% | 0.01% |
| Dec. 1, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | A | common stock | 2400 | $0.00 | 33,600.0000 | 47,227,338 | 7.69% | 0.01% |
| Sept. 7, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF NETWORK STRATEGY | S | common stock | 2400 | $69.16 | 31,200.0000 | 47,526,207 | 7.14% | 0.01% |
| June 6, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP OF IP ENGINEERING | S | common stock | 2400 | $62.23 | 33,600.0000 | 47,381,226 | 6.67% | 0.01% |
| March 7, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP of IP Engineering | S | common stock | 2400 | $63.51 | 36,000.0000 | 47,207,298 | 6.25% | 0.01% |
| Jan. 3, 2023 | COGENT COMMUNICATIONS HOLDINGS, INC. | $CCOI | KILMER HENRY W | VP of IP Engineering | A | common stock | 9600 | $0.00 | 38,400.0000 | 47,207,298 | 33.33% | 0.02% |