COGENT COMMUNICATIONS HOLDINGS, INC. 10-Q

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS ​ Our Board of Directors has authorized a plan to permit the repurchase of our common stock in negotiated and open market transactions through December 31, 2021. We may purchase shares from time to time depending on market, economic, and other factors. There were no purchases of our common stock during the third quarter of 2021. ​ 36 Table of Contents 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 Registrant’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2021, formatted in Inline Extensible Business Reporting Language (XBRL), include: (i) the Condensed Consolidated Statements of Comprehensive Income, (ii) the Condensed Consolidated Balance Sheets, (iii) the Condensed Consolidated Statements of Cash Flows, and (iv) related notes (filed herewith). ​ ​ ​ ​ 37 Table of Contents SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. ​ ​ ​ Date: November 4, 2021 COGENT COMMUNICATIONS HOLDINGS, INC. ​ ​ ​ By: /s/ David Schaeffer ​ ​ Name: David Schaeffer ​ ​ Title: Chief Executive Officer ​ ​ ​ Date: November 4, 2021 By: /s/ Sean Wallace ​ ​ Name: Sean Wallace ​ ​ Title: Chief Financial Officer ​ ​ ​ 38