Cogent Communications Holdings, Inc. SEC filings CCOI
Cogent Communications Holdings, Inc. has 1,002 filings in SEC EDGAR's recent list, going back to May 9, 2018. Its latest annual report, Form ARS, was filed on Mar 20, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 6, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 29, 2026 | Jun 29, 2026 |
| 8-K |
Current report
Material agreement
|
Jun 15, 2026 | Jun 15, 2026 |
| 8-K |
Current report
Material agreement, Other events
|
May 26, 2026 | May 22, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 4, 2026 | May 1, 2026 |
| S-8 | Employee stock plan registration | May 4, 2026 | — |
| 10-Q | Quarterly report | May 4, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 4, 2026 | May 4, 2026 |
| ARS | Annual report to shareholders | Mar 20, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Mar 20, 2026 | May 1, 2026 |
| 10-K | Annual report | Feb 20, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 20, 2026 | Feb 20, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 7, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 17, 2025 | Nov 17, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 15, 2025 | Aug 11, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 17, 2025 | Jun 17, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 3, 2025 | Jun 3, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 2, 2025 | Jun 2, 2025 |
| S-8 | Employee stock plan registration | May 8, 2025 | — |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
May 8, 2025 | May 7, 2025 |
| 10-Q | Quarterly report | May 8, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 8, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 11, 2025 | Apr 11, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 4, 2025 | Apr 4, 2025 |
| ARS | Annual report to shareholders | Mar 26, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Mar 26, 2025 | May 7, 2025 |
| PRE 14A | Preliminary proxy statement | Mar 13, 2025 | May 7, 2025 |
| 8-K |
Current report
Material agreement
|
Mar 12, 2025 | Mar 11, 2025 |
| 10-K | Annual report | Feb 28, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2025 | Feb 27, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 15, 2025 | Jan 9, 2025 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2024 | Aug 8, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 11, 2024 | Jun 11, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 6, 2024 | Jun 6, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 5, 2024 | Jun 5, 2024 |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 9, 2024 | May 9, 2024 |
| 8-K |
Current report
Shareholder vote results
|
May 8, 2024 | May 8, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
May 6, 2024 | May 2, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 25, 2024 | Apr 25, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 19, 2024 | Apr 19, 2024 |
| ARS | Annual report to shareholders | Mar 25, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Mar 25, 2024 | May 8, 2024 |
| 10-K | Annual report | Feb 29, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 29, 2024 | Feb 29, 2024 |
| 8-K |
Current report
Officer or director change
|
Jan 5, 2024 | Jan 3, 2024 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2023 | Nov 9, 2023 |
| 8-K |
Current report
Officer or director change
|
Aug 29, 2023 | Aug 28, 2023 |
| 8-K/A |
Amended current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 10-Q | Quarterly report | Aug 9, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Material agreement
|
Jul 27, 2023 | Jul 25, 2023 |
| 8-K/A | Amended current report | Jul 17, 2023 | May 1, 2023 |
| S-8 | Employee stock plan registration | May 12, 2023 | — |
| 10-Q | Quarterly report | May 5, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 4, 2023 | May 3, 2023 |
| 8-K |
Current report
Results of operations
|
May 4, 2023 | May 4, 2023 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Regulation FD disclosure
|
May 1, 2023 | May 1, 2023 |
| ARS | Annual report to shareholders | Mar 15, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Mar 15, 2023 | — |
| 10-K | Annual report | Feb 24, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 23, 2023 | Feb 23, 2023 |
| 8-K |
Current report
Material agreement
|
Jan 11, 2023 | Jan 6, 2023 |
| 8-K |
Current report
Officer or director change
|
Jan 6, 2023 | Jan 3, 2023 |
| 10-Q | Quarterly report | Nov 4, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2022 | Nov 3, 2022 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Sep 7, 2022 | Sep 6, 2022 |
| 8-K/A |
Amended current report
Officer or director change
|
Aug 8, 2022 | Jun 24, 2022 |
| 10-Q | Quarterly report | Aug 5, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 4, 2022 | Aug 4, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 27, 2022 | Jun 27, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 22, 2022 | Jun 22, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 7, 2022 | Jun 7, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 6, 2022 | Jun 6, 2022 |
| 8-K |
Current report
Officer or director change
|
May 5, 2022 | May 4, 2022 |
| 10-Q | Quarterly report | May 5, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
May 4, 2022 | May 4, 2022 |
| 8-K |
Current report
Officer or director change
|
Apr 29, 2022 | Apr 29, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2022 | Apr 29, 2022 |
| DEF 14A | Proxy statement | Mar 14, 2022 | May 4, 2022 |
| PRE 14A | Preliminary proxy statement | Mar 4, 2022 | May 4, 2022 |
| 10-K | Annual report | Feb 25, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 24, 2022 | Feb 24, 2022 |
| 8-K |
Current report
Officer or director change
|
Jan 5, 2022 | Jan 3, 2022 |
| 8-K |
Current report
Officer or director change
|
Dec 30, 2021 | Dec 23, 2021 |
| 10-Q | Quarterly report | Nov 4, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2021 | Nov 4, 2021 |
| 10-Q | Quarterly report | Aug 5, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2021 | Aug 5, 2021 |
| 8-K |
Current report
Officer or director change
|
Jun 4, 2021 | Jun 4, 2021 |
| 8-K |
Current report
Material agreement, New debt
|
May 11, 2021 | May 7, 2021 |
| S-8 | Employee stock plan registration | May 3, 2021 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 30, 2021 | Apr 30, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Apr 29, 2021 | Apr 29, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 29, 2021 | Apr 29, 2021 |
| 10-Q | Quarterly report | Apr 28, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2021 | Apr 28, 2021 |
| 8-K |
Current report
Other events
|
Apr 28, 2021 | Apr 28, 2021 |
| DEFA14A | Additional proxy material | Apr 15, 2021 | — |
| DEFA14A | Additional proxy material | Apr 15, 2021 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 6, 2021 | Apr 6, 2021 |
| 8-K |
Current report
Other events
|
Mar 26, 2021 | Mar 23, 2021 |
| 8-K/A |
Amended current report
Results of operations
|
Mar 16, 2021 | Feb 25, 2021 |
| DEF 14A | Proxy statement | Mar 5, 2021 | Apr 28, 2021 |
| 8-K |
Current report
Officer or director change
|
Feb 26, 2021 | Feb 24, 2021 |
| 10-K | Annual report | Feb 26, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 25, 2021 | Feb 25, 2021 |
| 10-Q | Quarterly report | Nov 5, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2020 | Nov 5, 2020 |
| 10-Q | Quarterly report | Aug 6, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2020 | Aug 6, 2020 |
| 8-K |
Current report
New debt
|
Jun 10, 2020 | Jun 9, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 9, 2020 | Jun 3, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
May 19, 2020 | May 19, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
May 19, 2020 | May 19, 2020 |
| 8-K |
Current report
Officer or director change
|
May 11, 2020 | May 11, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
May 8, 2020 | May 8, 2020 |
| 10-Q | Quarterly report | May 7, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 7, 2020 | May 7, 2020 |
| 8-K |
Current report
Shareholder vote results
|
May 6, 2020 | May 6, 2020 |
| 8-K |
Current report
Officer or director change
|
Mar 18, 2020 | Mar 17, 2020 |
| DEF 14A | Proxy statement | Mar 12, 2020 | May 6, 2020 |
| 8-K |
Current report
Material agreement
|
Mar 2, 2020 | Feb 28, 2020 |
| 10-K | Annual report | Feb 28, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
Feb 27, 2020 | Feb 27, 2020 |
| 8-K |
Current report
Officer or director change, Other events
|
Feb 19, 2020 | Feb 14, 2020 |
| 10-Q | Quarterly report | Nov 7, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Nov 7, 2019 | Nov 4, 2019 |
| 10-Q | Quarterly report | Aug 8, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2019 | Aug 8, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 25, 2019 | Jun 25, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 20, 2019 | Jun 20, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 18, 2019 | Jun 18, 2019 |
| 10-Q | Quarterly report | May 2, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
May 2, 2019 | May 2, 2019 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 1, 2019 | May 1, 2019 |
| S-8 | Employee stock plan registration | May 1, 2019 | — |
| DEFA14A | Additional proxy material | Apr 12, 2019 | — |
| DEF 14A | Proxy statement | Mar 15, 2019 | May 1, 2019 |
| 10-K | Annual report | Feb 22, 2019 | Dec 31, 2018 |
| 8-K/A |
Amended current report
Officer or director change
|
Feb 21, 2019 | Sep 14, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 21, 2019 | Feb 21, 2019 |
| 10-Q | Quarterly report | Nov 1, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 1, 2018 | Nov 1, 2018 |
| 8-K |
Current report
Officer or director change
|
Sep 14, 2018 | Sep 14, 2018 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Sep 10, 2018 | Sep 10, 2018 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 20, 2018 | Aug 20, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 15, 2018 | Aug 14, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 14, 2018 | Aug 14, 2018 |
| 10-Q | Quarterly report | Aug 2, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2018 | Aug 2, 2018 |
| DEF 14A | Proxy statement | Jul 19, 2018 | Sep 10, 2018 |
| PRE 14A | Preliminary proxy statement | Jun 27, 2018 | Sep 10, 2018 |
| UPLOAD | Letter from the SEC | May 23, 2018 | — |
| CORRESP | Letter to the SEC | May 17, 2018 | — |
| UPLOAD | Letter from the SEC | May 9, 2018 | — |
Showing 165 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Communications Services, NEC (SIC 4899)
- Listed as
- CCOI (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Washington, DC
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1158324
- Former names
- COGENT COMMUNICATIONS GROUP INC (until Jun 26, 2014)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.