COGENT COMMUNICATIONS HOLDINGS, INC. reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Washington, DC
SEC filing record 1 source field available
Fiscal year end
31 December
COGENT COMMUNICATIONS HOLDINGS, INC. has filed 2,534 SEC EDGAR filings since 29 Aug 2001

SEC filing history

Showing 1-25 of 1,000 matching filings.

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1
4

4 filing

Filing date
15 Sep 2026
Reporting date
15 Sep 2026
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4

4 filing

Filing date
03 Sep 2026
Reporting date
02 Sep 2026
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144 File 000-51829

144 filing

Filing date
02 Sep 2026
Reporting date
Not listed
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SCHEDULE 13G File 005-78106

SCHEDULE 13G filing

Filing date
07 Aug 2026
Reporting date
Not listed
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SCHEDULE 13G/A File 005-78106

SCHEDULE 13G/A filing

Filing date
31 Jul 2026
Reporting date
Not listed
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4

4 filing

Filing date
01 Jul 2026
Reporting date
30 Jun 2026
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4

4 filing

Filing date
01 Jul 2026
Reporting date
30 Jun 2026
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4

4 filing

Filing date
01 Jul 2026
Reporting date
30 Jun 2026
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4

4 filing

Filing date
01 Jul 2026
Reporting date
30 Jun 2026
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4

4 filing

Filing date
30 Jun 2026
Reporting date
30 Jun 2026
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4

4 filing

Filing date
30 Jun 2026
Reporting date
30 Jun 2026
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4

4 filing

Filing date
30 Jun 2026
Reporting date
30 Jun 2026
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SCHEDULE 13G/A File 005-78106

SCHEDULE 13G/A filing

Filing date
17 Jun 2026
Reporting date
Not listed
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4

4 filing

Filing date
16 Jun 2026
Reporting date
16 Jun 2026
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144 File 000-51829

144 filing

Filing date
16 Jun 2026
Reporting date
Not listed
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4

4 filing

Filing date
15 Jun 2026
Reporting date
15 Jun 2026
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144 File 000-51829

144 filing

Filing date
09 Jun 2026
Reporting date
Not listed
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4

4 filing

Filing date
28 May 2026
Reporting date
28 May 2026
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144 File 000-51829

144 filing

Filing date
28 May 2026
Reporting date
Not listed
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SCHEDULE 13G File 005-78106

SCHEDULE 13G filing

Filing date
22 May 2026
Reporting date
Not listed
SEC evidence
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