Cogent Communications Holdings, Inc. CCOI) Q1 2019 Earnings Conference Call May 2, 2019 8:30 AM ET Company Participants Dave Schaeffer – Chairman and Chief Executive Officer Tad Weed – Chief Financial Officer Conference Call Participants Philip Cusick – JPMorgan Walter Piecyk – BTIG Matthew Niknam – Deutsche Bank Tim Horan – Oppenheimer Nick Del Deo – MoffettNathanson Colby Synesael – Cowen and Company Michael Rollins – Citi Mike McCormack – Guggenheim Partners Michael Funk – Bank of America Brett Feldman ...

Table of Contents Title of Each Class Trading Symbol Name of Each Exchange on which Registered Common Stock, par value $0.001 per share CCOI NASDAQ Global Select Market UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2019 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File No. 000-51829 C ...

Cogent Communications Group, Inc (NASDAQ:CCOI) Q4 2018 Earnings Conference Call February 21, 2019 8:30 AM ET Company Participants Dave Schaeffer - Chairman and Chief Executive Officer Tad Weed - Chief Financial Officer Conference Call Participants Frank Louthan - Raymond James Nick Del Deo - MoffettNathanson Operator Good morning and welcome to the Cogent Communications Holdings Fourth Quarter and Full Year 2018 Earnings Conference Call. As a reminder, this conference call is being recorded and it will be a ...

Use these links to rapidly review the document TABLE OF CONTENTS ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the fiscal year ended December 31, 2018 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to Commission file number ...