Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File No. 000-51829 COGENT COMMUNICATIONS HOLDINGS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 46-5706863 (State of Incorporation) (I.R.S. Employe ...

Cogent Communications Holdings, Inc. (NASDAQ:CCOI) Q4 2020 Results Earnings Conference Call February 25, 2021 8:30 AM ET Company Participants Dave Schaeffer - Chairman and CEO Sean Wallace - Chief Financial Officer Conference Call Participants Walter Piecyk - LightShed Frank Louthan - Raymond James James Breen - William Blair Mike Funk - Bank of America Michael Srour - MoffettNathanson Evan Young - KeyBanc Capital Markets Michael Bunyaner - Tlf Capital Amir Razban - JPMorgan Operator Good morning. And welco ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the fiscal year ended December 31, 2020 OR ☐ 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 000-51829 COGENT COMMUNICATIONS HOLDINGS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State ...

Start Time: 08:00 January 1, 0000 9:24 AM ET Cogent Communications Holdings, Inc. (NASDAQ:CCOI) Q3 2020 Earnings Conference Call November 05, 2020, 08:30 AM ET Company Participants Dave Schaeffer - Founder and CEO Sean Wallace - CFO Conference Call Participants Philip Cusick - JPMorgan Frank Louthan - Raymond James Colby Synesael - Cowen & Company Walter Piecyk - LightShed Partners Michael Rollins - Citi Nick Del Deo - MoffettNathanson Timothy Horan - Oppenheimer Operator Good morning, and welcome to the Co ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File No. 000-51829 COGENT COMMUNICATIONS HOLDINGS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 46-5706863 (State of Incorporation) (I.R.S. Emp ...

Cogent Communications Holdings, Inc. (NASDAQ:CCOI) Q2 2020 Earnings Conference Call August 6, 2020 8:00 AM ET Company Participants David Schaeffer - Chairman, CEO & President Sean Wallace - CFO & Treasurer Conference Call Participants George Engroff - Credit Suisse Colby Synesael - Cowen & Company Michael Rollins - Citigroup Frank Louthan - Raymond James Nicholas Del Deo - MoffettNathanson Walter Piecyk - LightShed Partners Brandon Nispel - KeyBanc Capital Markets Bora Lee - RBC Capital Markets Philip Cusic ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File No. 000-51829 COGENT COMMUNICATIONS HOLDINGS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 46-5706863 (State of Incorporation) (I.R.S. Employer ...

Cogent Communications Holdings, Inc. (NASDAQ:CCOI) Q1 2020 Earnings Conference Call May 7, 2020 8:30 AM ET Company Participants Dave Schaeffer – Chairman and Chief Executive Officer Jean-Michel Slagmuylder – Acting Chief Financial Officer Conference Call Participants Philip Cusick – JPMorgan George Engroff – Crédit Suisse Frank Louthan – Raymond James Walter Piecyk – LightShed Colby Synesael – Cowen Nick Del Deo – MoffettNathanson Brandon Nispel – KeyBanc Tim Horan – Oppenheimer Bora Lee – RBC Capital Marke ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File No. 000-51829 COGENT COMMUNICATIONS HOLDINGS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware 46-5706863 (State of Incorporation) (I.R.S. Employe ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the fiscal year ended December 31, 2019 OR ☐ 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 000-51829 COGENT COMMUNICATIONS HOLDINGS, INC. (Exact Name of Registrant as Specified in Its Charter) Delaware (State ...