CCOI - Company ID 0001158324
COGENT COMMUNICATIONS HOLDINGS, INC. has filed 2,511 public company documents between 2001 and 2026. The most frequent type is insider trade (1,647 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| 4 | Insider trade | 19y ago2006-12-21 | 2006-12-20 | View filing |
| 4 | Insider trade | 19y ago2006-12-18 | 2006-12-15 | View filing |
| 4 | Insider trade | 19y ago2006-12-15 | 2006-12-15 | View filing |
| 4 | Insider trade | 19y ago2006-12-15 | 2006-12-15 | View filing |
| 4 | Insider trade | 19y ago2006-12-15 | 2006-12-15 | View filing |
| 4 | Insider trade | 19y ago2006-12-11 | 2006-12-11 | View filing |
| SC 13G | Passive ownership stake | 19y ago2006-12-11 | - | View filing |
| 4 | Insider trade | 19y ago2006-12-04 | 2006-12-01 | View filing |
| 4 | Insider trade | 19y ago2006-12-01 | 2006-12-01 | View filing |
| 4 | Insider trade | 19y ago2006-12-01 | 2006-11-29 | View filing |
| SC 13D/A | Activist ownership stake (update) | 19y ago2006-11-29 | - | View filing |
| 4 | Insider trade | 19y ago2006-11-28 | 2006-11-24 | View filing |
| 8-K | Major company event | 19y ago2006-11-22 | 2006-11-22 | View filing |
| 3 | New insider ownership | 19y ago2006-11-22 | 2006-11-22 | View filing |
| SC 13D/A | Activist ownership stake (update) | 19y ago2006-11-20 | - | View filing |
| SC 13D/A | Activist ownership stake (update) | 19y ago2006-11-20 | - | View filing |
| 4 | Insider trade | 19y ago2006-11-17 | 2006-11-14 | View filing |
| 4 | Insider trade | 19y ago2006-11-16 | 2006-11-14 | View filing |
| 4 | Insider trade | 19y ago2006-11-16 | 2006-11-14 | View filing |
| 4 | Insider trade | 19y ago2006-11-16 | 2006-11-14 | View filing |
| 4 | Insider trade | 19y ago2006-11-16 | 2006-11-15 | View filing |
| 4 | Insider trade | 19y ago2006-11-15 | 2006-11-14 | View filing |
| 4 | Insider trade | 19y ago2006-11-15 | 2006-11-15 | View filing |
| 4 | Insider trade | 19y ago2006-11-14 | 2006-11-14 | View filing |
| 8-K | Major company event | 19y ago2006-11-13 | 2006-11-09 | View filing |
| 4 | Insider trade | 19y ago2006-11-13 | 2006-11-09 | View filing |
| 424B5 | Prospectus supplement | 19y ago2006-11-09 | - | View filing |
| 424B3 | 424B3 | 19y ago2006-11-09 | - | View filing |
| 10-Q | Quarterly report | 19y ago2006-11-07 | 2006-09-30 | View filing |
| 4 | Insider trade | 19y ago2006-11-07 | 2006-11-06 | View filing |
| 8-K | Major company event | 19y ago2006-11-06 | 2006-11-06 | View filing |
| 4 | Insider trade | 19y ago2006-11-02 | 2006-11-01 | View filing |
| 4 | Insider trade | 19y ago2006-10-18 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-18 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-18 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-18 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-18 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-18 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-18 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-17 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-17 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-17 | 2006-10-16 | View filing |
| 4 | Insider trade | 19y ago2006-10-06 | 2006-10-05 | View filing |
| 4 | Insider trade | 19y ago2006-10-06 | 2006-10-05 | View filing |
| 4 | Insider trade | 19y ago2006-10-05 | 2006-10-05 | View filing |
| 4 | Insider trade | 19y ago2006-09-26 | 2006-09-25 | View filing |
| SC 13D/A | Activist ownership stake (update) | 19y ago2006-09-19 | - | View filing |
| 4 | Insider trade | 19y ago2006-09-15 | 2006-09-15 | View filing |
| 4/A | Insider trade (amended) | 19y ago2006-09-14 | 2006-09-12 | View filing |
| 4 | Insider trade | 19y ago2006-09-14 | 2006-09-12 | View filing |