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COGENT COMMUNICATIONS HOLDINGS, INC.

For the period ended Mar 31, 2026. Filed May 4, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 4, 2026

CCOI$4.45+11.8%Stored close · as of Nov 9, 2026

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Item 6. Exhibits

(a)Exhibits
Exhibit Number​ ​ ​Description
31.1​Certification of Chief Executive Officer (filed herewith)
31.2​Certification of Chief Financial Officer (filed herewith)
32.1​Certification of Chief Executive Officer (furnished herewith)
32.2​Certification of Chief Financial Officer (furnished herewith)
101.1​The following materials from the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2026, formatted in Inline Extensible Business Reporting Language (XBRL), include: (i) the Condensed Consolidated Statements of Comprehensive Loss, (ii) the Condensed Consolidated Balance Sheets, (iii) the Condensed Consolidated Statements of Cash Flows, and (iv) related notes (filed herewith).
104​Cover Page Interactive Data File (the cover page XBRL tags are embedded within the iXBRL document).
#Indicates a management contract or compensatory plan or arrangement in which directors or executive officers are eligible to participate.
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.