{"url_path":"/sec/ccoi/8-k/2026-06-15/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-15","source_url":"https://www.sec.gov/Archives/edgar/data/1158324/0001104659-26-074046-index.html","accession_number":"0001104659-26-074046","cik":"0001158324","ticker":"CCOI","issuer_name":"COGENT COMMUNICATIONS HOLDINGS, INC.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1158324/0001104659-26-074046-index.html","primary_entity_key":"0001158324","primary_entity_name":"COGENT COMMUNICATIONS HOLDINGS, INC."},"word_count":311,"has_tables":true,"body_markdown":"false\n0001158324\nDC\n\n0001158324\n\n2026-06-15\n2026-06-15\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\n**UNITED STATES\nSECURITIES AND EXCHANGE COMMISSION**\n\n**Washington, D.C. 20549** \n\n \n\n**FORM 8-K**\n\n \n\n**CURRENT REPORT\nPursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**\n\n \n\nDate of Report (Date of Earliest Event Reported):**June 15, 2026**\n\n \n\n**Cogent Communications Holdings, Inc.**\n\n(Exact name of registrant as specified in\nits charter)\n\n \n\n**Delaware**\n \n**000-51829**\n \n**46-5706863**\n\n(State\nor other jurisdiction of\n\nincorporation)\n \n(Commission\nFile Number)\n \n(IRS Employer\nIdentification No.)\n\n \n\n**2450 N St NW,**\n**Washington, D.C.**\n \n**20037**\n\n(Address of principal executive offices)\n \n(Zip Code)\n\n \n\nRegistrant’s telephone number, including\narea code:    **202-295-4200**\n\n \n\n**Not Applicable**\n\n****(Former name or former address, if\nchanged since last report.)\n\n \n\nCheck the appropriate box below if the Form 8-K filing\nis intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n \n\n¨   \nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n\n¨   \nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n\n¨   \nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n\n¨   \nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities registered pursuant to Section 12(b) of\nthe Act:\n\n \n\n**Title of Each Class**\n**Trading Symbol**\n**Name of Each Exchange on which Registered**\n\nCommon Stock, par value $0.001 per share\nCCOI\nNASDAQ Global Select Market\n\n  \n\nIndicate by check mark whether the registrant is an emerging\ngrowth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of\nthe Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth\ncompany   ¨\n\n \n\nIf an emerging\ngrowth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with\nany new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨"}