{"url_path":"/sec/ccoi/8-k/2026-06-15/item-9-01","section_key":"item-9-01","section_title":"Item 9.01 Financial Statements and Exhibits.**","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":107,"has_tables":true,"body_markdown":"**Item 9.01.  Financial Statements and Exhibits.**\n\n \n\n(d) Exhibits:\n\n \n\n**Exhibit**\n \n \n\n**Number**\n \n**Description**\n\n \n \n \n\n[4.1](tm2617890d1_ex4-1.htm)\n \n[First Supplemental Indenture, dated as of June 15, 2026, among Cogent Communications Group, LLC, Cogent Finance, Inc., the guarantors named therein and Wilmington Trust, National Association, as trustee and collateral agent.](tm2617890d1_ex4-1.htm)\n\n104\n \nCover Page Interactive Data File (embedded within the Inline XBRL document).\n\n \n\n \n\n \n\n \n\n**SIGNATURES**\n\n \n\nPursuant to the requirements of the Securities\nExchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.\n\n \n\nDated: June 15, 2026\n\n \n\n \nCogent Communications Holdings, Inc.\n\n \n \n \n\n \nBy:\n/s/ David Schaeffer\n\n \n \nName: David Schaeffer\n\n \n \nTitle:   President and Chief Executive Officer"}