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Cogent Communications Holdings stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−84.0% to $3.98
Cogent Communications Holdings (CCOI) stock fell 84% over the last 252 sessions, to $3.98. On the way it reported 5 quarters, its insiders filed 14 open-market trades and 1 Form 144 notice of planned sales, and the company filed 4 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Nov 5, 2026 | Earnings | Earnings: beat the EPS estimate by 45.6% | −37.0% (−32.5% vs SPY) | — | — |
| Sep 15, 2026 | Insider sale | Kilmer Henry W sold $22K | −0.8% (−0.3% vs SPY) | −0.3% (−2.2% vs SPY) | −8.4% (−10.9% vs SPY) |
| Sep 2, 2026 | Form 144 | Form 144: Thaddeus Weed plans to sell $45K | +12.6% (+12.2% vs SPY) | +3.5% (+3.4% vs SPY) | −9.1% (−9.6% vs SPY) |
| Sep 2, 2026 | Insider sale | Weed Thaddeus Gerard sold $45K | +12.6% (+12.2% vs SPY) | +3.5% (+3.4% vs SPY) | −9.1% (−9.6% vs SPY) |
| Aug 6, 2026 | Earnings | Earnings: beat the EPS estimate by 52.6% | −16.5% (−16.4% vs SPY) | −22.8% (−23.1% vs SPY) | −25.2% (−25.7% vs SPY) |
| Jun 16, 2026 | Insider sale | Weed Thaddeus Gerard sold $81K | −2.5% (−1.9% vs SPY) | −15.0% (−12.4% vs SPY) | −34.0% (−33.7% vs SPY) |
| Jun 15, 2026 | 8-K | Material definitive agreement | −2.5% (−1.9% vs SPY) | −15.0% (−12.4% vs SPY) | −34.0% (−33.7% vs SPY) |
| Jun 15, 2026 | Insider sale | Kilmer Henry W sold $41K | +3.6% (+1.9% vs SPY) | −7.9% (−8.5% vs SPY) | −23.6% (−25.6% vs SPY) |
| May 28, 2026 | Insider sale | FERGUSON Lewis H sold $57K | −8.7% (−9.2% vs SPY) | −27.7% (−28.2% vs SPY) | −47.7% (−45.1% vs SPY) |
| May 26, 2026 | 8-K | Material definitive agreement | +8.0% (+8.0% vs SPY) | −13.7% (−14.9% vs SPY) | −41.6% (−39.7% vs SPY) |
| May 14, 2026 | Insider sale | Kennedy Sheryl Lynn sold $54K | +2.1% (+1.3% vs SPY) | +12.1% (+12.2% vs SPY) | +0.7% (+0.8% vs SPY) |
| May 4, 2026 | 8-K | Directors and officers: departures, appointments, pay | −34.7% (−34.3% vs SPY) | −33.0% (−35.3% vs SPY) | −28.5% (−33.7% vs SPY) |
| May 4, 2026 | Earnings | Earnings: beat the EPS estimate by 52.1% | −34.7% (−34.3% vs SPY) | −33.0% (−35.3% vs SPY) | −28.5% (−33.7% vs SPY) |
| Mar 6, 2026 | Insider sale | Kilmer Henry W sold $56K | +1.4% (+2.7% vs SPY) | −14.7% (−12.5% vs SPY) | −16.8% (−13.8% vs SPY) |
| Mar 5, 2026 | Insider sale | Weed Thaddeus Gerard sold $110K | −1.4% (−0.8% vs SPY) | −7.8% (−6.5% vs SPY) | −19.4% (−15.3% vs SPY) |
| Mar 5, 2026 | Insider sale | Kennedy Sheryl Lynn sold $76K | −1.4% (−0.8% vs SPY) | −7.8% (−6.5% vs SPY) | −19.4% (−15.3% vs SPY) |
| Mar 5, 2026 | Insider sale | FERGUSON Lewis H sold $51K | −1.4% (−0.8% vs SPY) | −7.8% (−6.5% vs SPY) | −19.4% (−15.3% vs SPY) |
| Feb 20, 2026 | Earnings | Earnings: beat the EPS estimate by 71.5% | −34.7% (−35.5% vs SPY) | −34.9% (−35.6% vs SPY) | −37.6% (−32.4% vs SPY) |
| Jan 7, 2026 | 8-K | Directors and officers: departures, appointments, pay | +0.9% (+0.9% vs SPY) | +5.8% (+5.7% vs SPY) | +9.3% (+9.2% vs SPY) |
| Dec 11, 2025 | Insider sale | Weed Thaddeus Gerard sold $175K | +2.1% (+1.9% vs SPY) | −4.9% (−2.5% vs SPY) | −2.3% (−3.7% vs SPY) |
| Dec 8, 2025 | Insider sale | Kilmer Henry W sold $95K | +7.7% (+8.0% vs SPY) | +17.1% (+17.7% vs SPY) | +12.0% (+11.2% vs SPY) |
| Dec 2, 2025 | Insider sale | FERGUSON Lewis H sold $81K | +2.6% (+2.4% vs SPY) | +8.5% (+8.0% vs SPY) | +10.2% (+9.7% vs SPY) |
| Nov 11, 2025 | Insider sale | Kennedy Sheryl Lynn sold $51K | −7.0% (−7.3% vs SPY) | −17.9% (−15.5% vs SPY) | +7.5% (+6.6% vs SPY) |
| Nov 6, 2025 | Earnings | Earnings: beat the EPS estimate by 28.7% | −42.9% (−41.8% vs SPY) | −72.8% (−73.7% vs SPY) | −66.8% (−68.0% vs SPY) |
Insiders’ record here
In the year on the chart, Cogent Communications Holdings' insiders reported 0 open-market buys ($0) and 14 sales ($996K). Of the 12 old enough to score, 9 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was — and after a sale −35.2%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Cogent Communications Holdings: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.