Henry W. Kilmer is VP at COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI). They have made 43 open-market trades across 1 company since 2014, most recently 2026-09-15.
CIK 0001599812
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 43 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CCOI | 36,200 | $292K |
Shares reported on the most recent Form 4, priced at the 2026-09-15 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CCOI | SELL | 2026-09-15 | 2026-09-15 | $9.21 | $22K | -16.3% | -9.4% | — |
| CCOI | SELL | 2026-06-15 | 2026-06-15 | $17.01 | $41K | -19.9% | -24.9% | -44.2% |
| CCOI | SELL | 2026-03-06 | 2026-03-09 | $23.35 | $56K | -8.3% | -9.8% | -23.2% |
| CCOI | SELL | 2025-12-08 | 2025-12-08 | $19.79 | $95K | +6.2% | +4.3% | +6.1% |
| CCOI | SELL | 2025-09-05 | 2025-09-05 | $36.99 | $89K | +2.6% | +16.6% | -48.9% |
| CCOI | SELL | 2025-06-06 | 2025-06-09 | $47.95 | $115K | -3.6% | +0.1% | -25.1% |
| CCOI | SELL | 2025-03-07 | 2025-03-10 | $72.57 | $348K | -1.2% | -22.9% | -29.8% |
| CCOI | SELL | 2024-12-12 | 2024-12-13 | $75.61 | $363K | -0.1% | -6.1% | -11.2% |
| CCOI | SELL | 2024-09-04 | 2024-09-05 | $69.51 | $167K | -2.5% | +6.6% | +10.8% |
| CCOI | SELL | 2024-06-06 | 2024-06-07 | $56.00 | $134K | -4.4% | +4.4% | +32.0% |
| CCOI | SELL | 2024-03-05 | 2024-03-06 | $73.47 | $176K | -10.3% | -10.7% | -19.9% |
| CCOI | SELL | 2023-12-07 | 2023-12-08 | $67.94 | $326K | +4.7% | +8.2% | -1.1% |
| CCOI | SELL | 2023-09-07 | 2023-09-08 | $69.16 | $166K | -2.6% | -5.4% | +0.4% |
| CCOI | SELL | 2023-06-06 | 2023-06-07 | $62.23 | $149K | +6.0% | +4.7% | +12.8% |
| CCOI | SELL | 2023-03-07 | 2023-03-08 | $63.51 | $152K | +2.5% | +5.6% | +0.0% |
| CCOI | SELL | 2022-12-06 | 2022-12-08 | $57.36 | $275K | -2.1% | +7.9% | +10.7% |
| CCOI | SELL | 2022-09-07 | 2022-09-08 | $53.85 | $129K | +1.9% | -1.4% | +7.9% |
| CCOI | SELL | 2022-06-07 | 2022-06-07 | $59.20 | $142K | -5.1% | +1.9% | -9.8% |
| CCOI | SELL | 2022-03-08 | 2022-03-09 | $62.72 | $151K | -1.3% | +8.6% | -4.1% |
| CCOI | SELL | 2021-12-13 | 2021-12-13 | $77.26 | $185K | -5.8% | -16.9% | -19.4% |
| CCOI | SELL | 2021-12-07 | 2021-12-07 | $77.90 | $187K | -7.9% | -11.2% | -18.5% |
| CCOI | SELL | 2021-09-07 | 2021-09-07 | $74.13 | $178K | -2.4% | -2.1% | +2.8% |
| CCOI | SELL | 2021-06-07 | 2021-06-07 | $76.09 | $183K | +1.6% | -1.1% | -1.9% |
| CCOI | SELL | 2021-03-05 | 2021-03-05 | $57.64 | $138K | +8.9% | +19.8% | +29.4% |
| CCOI | SELL | 2020-12-07 | 2020-12-08 | $57.93 | $139K | +5.2% | +3.6% | +3.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.