COGENT COMMUNICATIONS HOLDINGS, INC. reports

Company location: Washington, DC
Fiscal year end: 31 December

COGENT COMMUNICATIONS HOLDINGS, INC. has filed 2,541 SEC EDGAR filings since 29 Aug 2001

Filter by type:
10-K
10-Q
8-K
SC13D
SC13G

SEC filing history

Showing 976-1,000 of 1,000 matching filings.

Per page

25

Current page

40

8-K File 000-51829

8-K

Filing date: 02 Aug 2018
Reporting date: 02 Aug 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 01 Aug 2018
Reporting date: 01 Aug 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 000-51829

DEF 14A

Filing date: 19 Jul 2018
Reporting date: 10 Sep 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 03 Jul 2018
Reporting date: 01 Jul 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 03 Jul 2018
Reporting date: 02 Jul 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 03 Jul 2018
Reporting date: 01 Jul 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 03 Jul 2018
Reporting date: 01 Jul 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 02 Jul 2018
Reporting date: 01 Jul 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 02 Jul 2018
Reporting date: 01 Jul 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

PRE 14A File 000-51829

PRE 14A

Filing date: 27 Jun 2018
Reporting date: 10 Sep 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 20 Jun 2018
Reporting date: 20 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 19 Jun 2018
Reporting date: 19 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 18 Jun 2018
Reporting date: 15 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 06 Jun 2018
Reporting date: 06 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 06 Jun 2018
Reporting date: 06 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 05 Jun 2018
Reporting date: 04 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 01 Jun 2018
Reporting date: 01 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 01 Jun 2018
Reporting date: 01 Jun 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

UPLOAD

UPLOAD filing

Filing date: 23 May 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 18 May 2018
Reporting date: 18 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 17 May 2018
Reporting date: 16 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

CORRESP

CORRESP filing

Filing date: 17 May 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 11 May 2018
Reporting date: 11 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 09 May 2018
Reporting date: 09 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 09 May 2018
Reporting date: 08 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .