Cogent Communications Holdings CCOI SEC Filings

NASDAQ CCOI
$4.35 -0.10 (-2.25%)
At close: Nov 10, 2026 · 4:00 PM EST
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Cogent Communications Holdings, Inc. (CCOI) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
18-KCurrent Report0001104659-26-123047Nov 5, 2026 12:22 PM
210-QQuarterly & Annual Report0001104659-26-123158Nov 5, 2026 10:39 AM
3SCHEDULE 13GBeneficial Ownership Report0002012383-26-003317Oct 5, 2026 7:58 PM
44Insider Transaction0001456823-26-000010Sep 30, 2026 10:29 PM
54Insider Transaction0001790695-26-000016Sep 30, 2026 10:28 PM
64Insider Transaction0001923830-26-000008Sep 30, 2026 10:27 PM
74Insider Transaction0001933694-26-000009Sep 30, 2026 10:26 PM
84Insider Transaction0001395643-26-000018Sep 30, 2026 10:24 PM
94Insider Transaction0001901420-26-000008Sep 30, 2026 10:24 PM
104Insider Transaction0001227882-26-000008Sep 30, 2026 10:22 PM
114Insider Transaction0001599812-26-000008Sep 15, 2026 9:50 PM
124Insider Transaction0001166978-26-000009Sep 3, 2026 1:45 PM
13144Insider Transaction0001950047-26-008992Sep 2, 2026 8:11 PM
14SCHEDULE 13GBeneficial Ownership Report0000093751-26-000438Aug 7, 2026 1:05 PM
1510-QQuarterly & Annual Report0001104659-26-091790Aug 6, 2026 3:21 PM
168-KCurrent Report0001104659-26-091634Aug 6, 2026 11:19 AM
17SCHEDULE 13GBeneficial Ownership Report0002100121-26-000950Jul 31, 2026 3:25 PM
184Insider Transaction0001923830-26-000006Jul 1, 2026 9:17 PM
194Insider Transaction0001227882-26-000006Jul 1, 2026 8:52 PM
204Insider Transaction0001901420-26-000006Jul 1, 2026 3:21 PM
214Insider Transaction0001933694-26-000007Jul 1, 2026 3:21 PM
224Insider Transaction0001395643-26-000016Jun 30, 2026 9:04 PM
234Insider Transaction0001790695-26-000014Jun 30, 2026 9:03 PM
244Insider Transaction0001456823-26-000008Jun 30, 2026 9:03 PM
258-KCurrent Report0001104659-26-078858Jun 29, 2026 8:29 PM
26SCHEDULE 13GBeneficial Ownership Report0001493152-26-029083Jun 17, 2026 8:15 PM
274Insider Transaction0001166978-26-000007Jun 16, 2026 8:25 PM
28144Insider Transaction0001950047-26-006169Jun 16, 2026 8:03 PM
294Insider Transaction0001599812-26-000006Jun 15, 2026 8:24 PM
308-KCurrent Report0001104659-26-074046Jun 15, 2026 8:20 PM
31144Insider Transaction0001949846-26-000363Jun 9, 2026 4:00 PM
324Insider Transaction0001395643-26-000014May 28, 2026 8:01 PM
33144Insider Transaction0001395643-26-000012May 28, 2026 7:59 PM
348-KCurrent Report0001104659-26-066279May 26, 2026 8:15 PM
35SCHEDULE 13GBeneficial Ownership Report0001493152-26-025027May 22, 2026 8:15 PM
364Insider Transaction0001790695-26-000012May 18, 2026 8:12 PM
37144Insider Transaction0001790695-26-000010May 18, 2026 8:10 PM
384Insider Transaction0001166976-26-000011May 4, 2026 8:22 PM
398-KCurrent Report0001104659-26-054817May 4, 2026 7:35 PM
40S-8Prospectus0001104659-26-054797May 4, 2026 7:10 PM
4110-QQuarterly & Annual Report0001104659-26-054611May 4, 2026 3:52 PM
428-KCurrent Report0001104659-26-054436May 4, 2026 11:05 AM
43SCHEDULE 13GBeneficial Ownership Report0002100121-26-000232Apr 29, 2026 4:34 PM
444Insider Transaction0001166976-26-000009Apr 2, 2026 8:26 PM
454Insider Transaction0001456823-26-000006Mar 31, 2026 9:39 PM
464Insider Transaction0001790695-26-000008Mar 31, 2026 9:38 PM
474Insider Transaction0001923830-26-000004Mar 31, 2026 9:37 PM
484Insider Transaction0001933694-26-000005Mar 31, 2026 9:34 PM
494Insider Transaction0001395643-26-000009Mar 31, 2026 9:31 PM
504Insider Transaction0001901420-26-000004Mar 31, 2026 9:30 PM
...

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