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 |
|---|---|---|---|---|
| 10-Q | Quarterly report | 22y ago2003-11-14 | 2003-09-30 | View filing |
| 3 | New insider ownership | 22y ago2003-10-31 | 2003-10-21 | View filing |
| 4/A | Insider trade (amended) | 22y ago2003-10-31 | 2003-10-10 | View filing |
| 3 | New insider ownership | 22y ago2003-10-30 | 2003-10-21 | View filing |
| S-1 | IPO registration | 22y ago2003-10-23 | - | View filing |
| SC TO-I/A | SC TO-I/A | 22y ago2003-10-17 | - | View filing |
| SC TO-T/A | SC TO-T/A | 22y ago2003-10-14 | - | View filing |
| 4 | Insider trade | 22y ago2003-10-14 | 2003-10-10 | View filing |
| 4 | Insider trade | 22y ago2003-10-14 | 2003-10-10 | View filing |
| 4 | Insider trade | 22y ago2003-10-14 | 2003-10-10 | View filing |
| 4 | Insider trade | 22y ago2003-10-10 | 2003-10-10 | View filing |
| 4 | Insider trade | 22y ago2003-10-10 | 2003-10-10 | View filing |
| 4 | Insider trade | 22y ago2003-10-10 | 2003-10-10 | View filing |
| 4 | Insider trade | 22y ago2003-10-10 | 2003-10-10 | View filing |
| 4 | Insider trade | 22y ago2003-10-10 | 2003-10-10 | View filing |
| SC TO-I/A | SC TO-I/A | 22y ago2003-10-02 | - | View filing |
| SC TO-I | SC TO-I | 22y ago2003-09-11 | - | View filing |
| S-8 | Employee stock plan | 22y ago2003-09-11 | - | View filing |
| 4 | Insider trade | 22y ago2003-08-28 | 2003-08-28 | View filing |
| SC TO-T | SC TO-T | 22y ago2003-08-15 | - | View filing |
| 10-Q | Quarterly report | 22y ago2003-08-14 | 2003-06-30 | View filing |
| 4 | Insider trade | 22y ago2003-08-13 | 2003-07-31 | View filing |
| SC 13D | Activist ownership stake | 22y ago2003-08-11 | - | View filing |
| SC 13D | Activist ownership stake | 22y ago2003-08-11 | - | View filing |
| SC 13D | Activist ownership stake | 22y ago2003-08-11 | - | View filing |
| SC 13D | Activist ownership stake | 22y ago2003-08-08 | - | View filing |
| 8-K | Major company event | 22y ago2003-08-07 | 2003-07-31 | View filing |
| 4 | Insider trade | 22y ago2003-08-05 | 2003-07-31 | View filing |
| 4 | Insider trade | 22y ago2003-08-05 | 2003-07-31 | View filing |
| 4 | Insider trade | 22y ago2003-08-05 | 2003-07-31 | View filing |
| 4 | Insider trade | 22y ago2003-08-05 | 2003-08-05 | View filing |
| 4 | Insider trade | 22y ago2003-08-04 | 2003-07-31 | View filing |
| 4 | Insider trade | 22y ago2003-08-04 | 2003-07-31 | View filing |
| 4 | Insider trade | 22y ago2003-08-04 | 2003-07-31 | View filing |
| 4 | Insider trade | 22y ago2003-08-04 | 2003-07-31 | View filing |
| 4 | Insider trade | 22y ago2003-08-01 | 2003-07-31 | View filing |
| SC 14D9/A | SC 14D9/A | 22y ago2003-07-24 | - | View filing |
| SC 14D9 | SC 14D9 | 22y ago2003-07-21 | - | View filing |
| DEF 14C | DEF 14C | 23y ago2003-07-11 | 2003-07-11 | View filing |
| PRER14C | PRER14C | 23y ago2003-07-09 | - | View filing |
| 8-K | Major company event | 23y ago2003-06-23 | 2003-06-19 | View filing |
| PRE 14C | PRE 14C | 23y ago2003-06-20 | 2003-06-20 | View filing |
| 10-Q/A | Quarterly report (amended) | 23y ago2003-05-15 | 2003-03-31 | View filing |
| 10-Q | Quarterly report | 23y ago2003-05-15 | 2003-03-31 | View filing |
| DEF 14C | DEF 14C | 23y ago2003-04-24 | 2003-06-12 | View filing |
| 10-K | Annual report | 23y ago2003-03-31 | 2002-12-31 | View filing |
| 8-K | Major company event | 23y ago2003-03-03 | 2003-02-28 | View filing |
| SC 13G/A | Passive ownership stake (update) | 23y ago2003-02-14 | - | View filing |
| SC 13G | Passive ownership stake | 23y ago2003-02-14 | - | View filing |
| DEF 14C | DEF 14C | 23y ago2003-02-12 | 2003-02-12 | View filing |