https://www.developersdigest.tech/markets/ccoi/filings Latest company filings for COGENT COMMUNICATIONS HOLDINGS, INC. (CCOI) - annual reports, quarterly reports, major events, and insider trades, newest first. en Fri, 10 Jul 2026 00:00:10 GMT https://www.sec.gov/Archives/edgar/data/1158324/000110465926066279/tm2615510d1_8k.htm 0001104659-26-066279 Tue, 26 May 2026 12:00:00 GMT 8-K https://www.sec.gov/Archives/edgar/data/1158324/000149315226025027/xslSCHEDULE_13G_X02/primary_doc.xml 0001493152-26-025027 Fri, 22 May 2026 12:00:00 GMT SCHEDULE 13G https://www.sec.gov/Archives/edgar/data/1158324/000179069526000012/xslF345X06/form4-05182026_080556.xml 0001790695-26-000012 Mon, 18 May 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000179069526000010/xsl144X01/primary_doc.xml 0001790695-26-000010 Mon, 18 May 2026 12:00:00 GMT 144 https://www.sec.gov/Archives/edgar/data/1158324/000116697626000011/xslF345X06/form4-05042026_080527.xml 0001166976-26-000011 Mon, 04 May 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000110465926054817/tm2613224d2_8k.htm 0001104659-26-054817 Mon, 04 May 2026 12:00:00 GMT 8-K https://www.sec.gov/Archives/edgar/data/1158324/000110465926054797/tm2613224d1_s8.htm 0001104659-26-054797 Mon, 04 May 2026 12:00:00 GMT S-8 https://www.sec.gov/Archives/edgar/data/1158324/000110465926054611/ccoi-20260331x10q.htm 0001104659-26-054611 Mon, 04 May 2026 12:00:00 GMT 10-Q https://www.sec.gov/Archives/edgar/data/1158324/000110465926054436/tm2613224d3_8k.htm 0001104659-26-054436 Mon, 04 May 2026 12:00:00 GMT 8-K https://www.sec.gov/Archives/edgar/data/1158324/000210012126000232/xslSCHEDULE_13G_X02/primary_doc.xml 0002100121-26-000232 Wed, 29 Apr 2026 12:00:00 GMT SCHEDULE 13G https://www.sec.gov/Archives/edgar/data/1158324/000116697626000009/xslF345X06/form4-04022026_080455.xml 0001166976-26-000009 Thu, 02 Apr 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000193369426000005/xslF345X06/form4-03312026_090305.xml 0001933694-26-000005 Tue, 31 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000192383026000004/xslF345X06/form4-03312026_090344.xml 0001923830-26-000004 Tue, 31 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000190142026000004/xslF345X06/form4-03312026_090319.xml 0001901420-26-000004 Tue, 31 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000179069526000008/xslF345X06/form4-03312026_090339.xml 0001790695-26-000008 Tue, 31 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000145682326000006/xslF345X06/form4-03312026_090350.xml 0001456823-26-000006 Tue, 31 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000139564326000009/xslF345X06/form4-03312026_090333.xml 0001395643-26-000009 Tue, 31 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000122788226000004/xslF345X06/form4-03312026_090328.xml 0001227882-26-000004 Tue, 31 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000010290926000967/xslSCHEDULE_13G_X02/primary_doc.xml 0000102909-26-000967 Thu, 26 Mar 2026 12:00:00 GMT SCHEDULE 13G/A https://www.sec.gov/Archives/edgar/data/1158324/000110465926032752/tm262988d2_ars.pdf 0001104659-26-032752 Fri, 20 Mar 2026 12:00:00 GMT ARS https://www.sec.gov/Archives/edgar/data/1158324/000110465926032744/tm261415-1_def14a.htm 0001104659-26-032744 Fri, 20 Mar 2026 12:00:00 GMT DEF 14A https://www.sec.gov/Archives/edgar/data/1158324/000159981226000004/xslF345X05/form4-03092026_120343.xml 0001599812-26-000004 Mon, 09 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000195004726002272/xsl144X01/primary_doc.xml 0001950047-26-002272 Thu, 05 Mar 2026 12:00:00 GMT 144 https://www.sec.gov/Archives/edgar/data/1158324/000194984626000146/xsl144X01/primary_doc.xml 0001949846-26-000146 Thu, 05 Mar 2026 12:00:00 GMT 144 https://www.sec.gov/Archives/edgar/data/1158324/000179069526000007/xslF345X05/form4-03052026_090327.xml 0001790695-26-000007 Thu, 05 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000179069526000006/xsl144X01/primary_doc.xml 0001790695-26-000006 Thu, 05 Mar 2026 12:00:00 GMT 144 https://www.sec.gov/Archives/edgar/data/1158324/000139564326000007/xslF345X05/form4-03052026_090346.xml 0001395643-26-000007 Thu, 05 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000139564326000006/xsl144X01/primary_doc.xml 0001395643-26-000006 Thu, 05 Mar 2026 12:00:00 GMT 144 https://www.sec.gov/Archives/edgar/data/1158324/000116697826000005/xslF345X05/form4-03052026_090344.xml 0001166978-26-000005 Thu, 05 Mar 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000110465926017968/ccoi-20251231x10k.htm 0001104659-26-017968 Fri, 20 Feb 2026 12:00:00 GMT 10-K https://www.sec.gov/Archives/edgar/data/1158324/000110465926017862/tm266769d1_8k.htm 0001104659-26-017862 Fri, 20 Feb 2026 12:00:00 GMT 8-K https://www.sec.gov/Archives/edgar/data/1158324/000090514826000888/xslSCHEDULE_13G_X01/primary_doc.xml 0000905148-26-000888 Tue, 17 Feb 2026 12:00:00 GMT SCHEDULE 13G/A https://www.sec.gov/Archives/edgar/data/1158324/000201238326000838/xslSCHEDULE_13G_X01/primary_doc.xml 0002012383-26-000838 Fri, 23 Jan 2026 12:00:00 GMT SCHEDULE 13G/A https://www.sec.gov/Archives/edgar/data/1158324/000110465926001748/tm262269d1_8k.htm 0001104659-26-001748 Wed, 07 Jan 2026 12:00:00 GMT 8-K https://www.sec.gov/Archives/edgar/data/1158324/000208305026000003/xslF345X05/form4-01052026_090112.xml 0002083050-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000193369426000003/xslF345X05/form4-01052026_090135.xml 0001933694-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000192383026000003/xslF345X05/form4-01052026_090111.xml 0001923830-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000190142026000003/xslF345X05/form4-01052026_090122.xml 0001901420-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000179069526000003/xslF345X05/form4-01052026_090148.xml 0001790695-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000177567226000003/xslF345X05/form4-01052026_090126.xml 0001775672-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000159981226000003/xslF345X05/form4-01052026_090124.xml 0001599812-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000145682326000003/xslF345X05/form4-01052026_090116.xml 0001456823-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000139564326000003/xslF345X05/form4-01052026_090102.xml 0001395643-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000122788226000003/xslF345X05/form4-01052026_090137.xml 0001227882-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000116697826000003/xslF345X05/form4-01052026_090102.xml 0001166978-26-000003 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000116697626000007/xslF345X05/form4-01052026_090106.xml 0001166976-26-000007 Mon, 05 Jan 2026 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000116697825000007/xslF345X05/form4-12122025_091259.xml 0001166978-25-000007 Fri, 12 Dec 2025 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000195004725010136/xsl144X01/primary_doc.xml 0001950047-25-010136 Thu, 11 Dec 2025 12:00:00 GMT 144 https://www.sec.gov/Archives/edgar/data/1158324/000159981225000007/xslF345X05/form4-12082025_091259.xml 0001599812-25-000007 Mon, 08 Dec 2025 12:00:00 GMT 4 https://www.sec.gov/Archives/edgar/data/1158324/000194984625000657/xsl144X01/primary_doc.xml 0001949846-25-000657 Wed, 03 Dec 2025 12:00:00 GMT 144