COGENT COMMUNICATIONS HOLDINGS, INC.

WASHINGTON, D.C. September 1, 2026 – Cogent Communications Holdings, Inc.(“Cogent”) (NASDAQ: CCOI), one of the largest Internet service providers in the world, today announced that Dave Schaeffer, Cogent’s Chief Executive Officer, will present at the following conferences: The Goldman Sachs Communacopia + Technology Conference is being held in San Francisco, CA. Dave Schaeffer will be presenting on Tuesday, September 8th at 2:25 p.m. PT. The 2026 Citi Global TMT Conference is being held at the New York Hilton in New York, NY. Dave Schaeffer will be presenting on Wednesday, September 9th at 3:55 p.m. ET. The 2026 BofA Securities Media, Communications & Entertainment Conference is being at the Bank of America Pavilion in New York, NY. Dave Schaeffer will be presenting on Thursday, September 10th at 9:40 a.m. ET. Investors and other interested parties may access live audio webcasts of the conference presentations by going to the “Events” section of Cogent’s website at www.cogentco.com/events. Replays of the webcasts will be available for 90 days following the presentations. About Cogent Cogent (NASDAQ: CCOI) is a facilities-based provider of low cost, high speed Internet access and private network services to bandwidth intensive businesses. Cogent’s facilities-based, all-optical IP network provides services in 308 markets globally. Cogent is headquartered at 2450 N St, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent can be reached in the United States at (202) 295-4200 or via email at info@cogentco.com. # # # Information in this release may involve expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to Cogent Communications Holdings, Inc. as of the date of the release, and we assume no obligation to update any such forward-looking statement. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Some of the factors and risks associated with our business are discussed in Cogent’s registration statements filed with the Securities and Exchange Commission and in its other reports filed from time to time with the SEC. ###  

WASHINGTON, D.C. September 1, 2026 – Cogent Communications Holdings, Inc.(“Cogent”) (NASDAQ: CCOI), one of the largest Internet service providers in the world, today announced that Dave Schaeffer, Cogent’s Chief Executive Officer, will present at the following conferences: The Goldman Sachs Communacopia + Technology Conference is being held in San Francisco, CA. Dave Schaeffer will be presenting on Tuesday, September 8th at 2:25 p.m. PT. The 2026 Citi Global TMT Conference is being held at the New York Hilton in New York, NY. Dave Schaeffer will be presenting on Wednesday, September 9th at 3:55 p.m. ET. The 2026 BofA Securities Media, Communications & Entertainment Conference is being at the Bank of America Pavilion in New York, NY. Dave Schaeffer will be presenting on Thursday, September 10th at 9:40 a.m. ET. Investors and other interested parties may access live audio webcasts of the conference presentations by going to the “Events” section of Cogent’s website at www.cogentco.com/events. Replays of the webcasts will be available for 90 days following the presentations. About Cogent Cogent (NASDAQ: CCOI) is a facilities-based provider of low cost, high speed Internet access and private network services to bandwidth intensive businesses. Cogent’s facilities-based, all-optical IP network provides services in 308 markets globally. Cogent is headquartered at 2450 N St, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent can be reached in the United States at (202) 295-4200 or via email at info@cogentco.com. # # # Information in this release may involve expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to Cogent Communications Holdings, Inc. as of the date of the release, and we assume no obligation to update any such forward-looking statement. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Some of the factors and risks associated with our business are discussed in Cogent’s registration statements filed with the Securities and Exchange Commission and in its other reports filed from time to time with the SEC. ###  

Download PDF version of the report   Download Excel version of Cogent's Summary of Financial and Operational Results for Q2 2026  

Download PDF version of the report   Download Excel version of Cogent's Summary of Financial and Operational Results for Q2 2026  

WASHINGTON, D.C. July 29, 2026 – Cogent Communications Holdings, Inc.(“Cogent”) (NASDAQ: CCOI), one of the largest Internet service providers in the world, today announced that Dave Schaeffer, Cogent’s Chief Executive Officer, will present at the following conferences: The KeyBanc Technology Leadership Forum is being held at The Montage in Deer Valley, UT. Dave Schaeffer will be presenting on Monday, August 10th at 11:30 a.m. MT. The TD Cowen 12th Annual Communications Infrastructure Summit is being held at the St. Julien Hotel & Spa in Boulder, CO. Dave Schaeffer will be presenting on Tuesday, August 11th at 3:45 p.m. MT. The Oppenheimer 29th Annual Technology, Internet & Communications Conference is being held virtually. Dave Schaeffer will be presenting on Wednesday, August 12th at 11:35 a.m. ET. Investors and other interested parties may access live audio webcasts of the conference presentations by going to the “Events” section of Cogent’s website at www.cogentco.com/events. Replays of the webcasts will be available for 90 days following the presentations. About Cogent Cogent (NASDAQ: CCOI) is a facilities-based provider of low cost, high speed Internet access and private network services to bandwidth intensive businesses. Cogent’s facilities-based, all-optical IP network provides services in 306 markets globally. Cogent is headquartered at 2450 N St, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent can be reached in the United States at (202) 295-4200 or via email at info@cogentco.com. # # # Information in this release may involve expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to Cogent Communications Holdings, Inc. as of the date of the release, and we assume no obligation to update any such forward-looking statement. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Some of the factors and risks associated with our business are discussed in Cogent’s registration statements filed with the Securities and Exchange Commission and in its other reports filed from time to time with the SEC. ###  

WASHINGTON, D.C. July 29, 2026 – Cogent Communications Holdings, Inc.(“Cogent”) (NASDAQ: CCOI), one of the largest Internet service providers in the world, today announced that Dave Schaeffer, Cogent’s Chief Executive Officer, will present at the following conferences: The KeyBanc Technology Leadership Forum is being held at The Montage in Deer Valley, UT. Dave Schaeffer will be presenting on Monday, August 10th at 11:30 a.m. MT. The TD Cowen 12th Annual Communications Infrastructure Summit is being held at the St. Julien Hotel & Spa in Boulder, CO. Dave Schaeffer will be presenting on Tuesday, August 11th at 3:45 p.m. MT. The Oppenheimer 29th Annual Technology, Internet & Communications Conference is being held virtually. Dave Schaeffer will be presenting on Wednesday, August 12th at 11:35 a.m. ET. Investors and other interested parties may access live audio webcasts of the conference presentations by going to the “Events” section of Cogent’s website at www.cogentco.com/events. Replays of the webcasts will be available for 90 days following the presentations. About Cogent Cogent (NASDAQ: CCOI) is a facilities-based provider of low cost, high speed Internet access and private network services to bandwidth intensive businesses. Cogent’s facilities-based, all-optical IP network provides services in 306 markets globally. Cogent is headquartered at 2450 N St, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent can be reached in the United States at (202) 295-4200 or via email at info@cogentco.com. # # # Information in this release may involve expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to Cogent Communications Holdings, Inc. as of the date of the release, and we assume no obligation to update any such forward-looking statement. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Some of the factors and risks associated with our business are discussed in Cogent’s registration statements filed with the Securities and Exchange Commission and in its other reports filed from time to time with the SEC. ###  

WASHINGTON, D.C. July 15, 2025 – Cogent Communications Holdings, Inc. (“Cogent”) (NASDAQ: CCOI) will host a conference call at 8:30 a.m. (ET) on August 6, 2026 to present Cogent’s operating results for the second quarter of 2026 and answer questions. Cogent will issue a press release announcing the operating results at 7:00 a.m. (ET) on August 6, 2026. Participation is open to all parties and this call may be accessed as follows: Dial-in Numbers: 1-888-596-4144 for U.S. and Canadian callers1-646-968-2525 for international callersConference ID 6641307We recommend callers dial in 15 minutes prior to the start of the call to ensure you are connected. Internet: An audio webcast is accessible under "Events" in the "News" section of Cogent's website at www.cogentco.com/events and will remain available through August 20, 2026. A printed transcript will be posted on the website when it becomes available.   About Cogent Cogent (NASDAQ: CCOI) is a facilities-based provider of low cost, high speed Internet access and private network services to bandwidth intensive businesses. Cogent’s facilities-based, all-optical IP network provides services in 306 markets globally. Cogent is headquartered at 2450 N Street, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent can be reached in the United States at (202) 295-4200 or via email at info@cogentco.com. # # # Information in this release may involve expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to Cogent Communications Holdings, Inc. as of the date of the release, and we assume no obligation to update any such forward-looking statement. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Some of the factors and risks associated with our business are discussed in Cogent’s registration statements filed with the Securities and Exchange Commission and in its other reports filed from time to time with the SEC. ###

WASHINGTON, D.C. July 15, 2025 – Cogent Communications Holdings, Inc. (“Cogent”) (NASDAQ: CCOI) will host a conference call at 8:30 a.m. (ET) on August 6, 2026 to present Cogent’s operating results for the second quarter of 2026 and answer questions. Cogent will issue a press release announcing the operating results at 7:00 a.m. (ET) on August 6, 2026. Participation is open to all parties and this call may be accessed as follows: Dial-in Numbers: 1-888-596-4144 for U.S. and Canadian callers1-646-968-2525 for international callersConference ID 6641307We recommend callers dial in 15 minutes prior to the start of the call to ensure you are connected. Internet: An audio webcast is accessible under "Events" in the "News" section of Cogent's website at www.cogentco.com/events and will remain available through August 20, 2026. A printed transcript will be posted on the website when it becomes available.   About Cogent Cogent (NASDAQ: CCOI) is a facilities-based provider of low cost, high speed Internet access and private network services to bandwidth intensive businesses. Cogent’s facilities-based, all-optical IP network provides services in 306 markets globally. Cogent is headquartered at 2450 N Street, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent can be reached in the United States at (202) 295-4200 or via email at info@cogentco.com. # # # Information in this release may involve expectations, beliefs, plans, intentions or strategies regarding the future. These forward-looking statements involve risks and uncertainties. All forward-looking statements included in this release are based upon information available to Cogent Communications Holdings, Inc. as of the date of the release, and we assume no obligation to update any such forward-looking statement. The statements in this release are not guarantees of future performance and actual results could differ materially from our current expectations. Numerous factors could cause or contribute to such differences. Some of the factors and risks associated with our business are discussed in Cogent’s registration statements filed with the Securities and Exchange Commission and in its other reports filed from time to time with the SEC. ###

WASHINGTON, D.C. June 29, 2026 – Cogent Communications Holdings, Inc. (“Cogent”) (NASDAQ: CCOI) today announced that its indirect wholly owned subsidiary, Cogent Fiber, LLC, has closed the previously announced sale of 10 data center facilities for an aggregate purchase price of $225 million in cash to a newly formed entity sponsored by I Squared Capital. The 10 facilities are located in Phoenix, AZ, Anaheim, CA, Burbank, CA, Stockton, CA, Atlanta, GA, Chicago, IL, Elkridge, MD, Kansas City, MO, Nashville, TN and Houston, TX. About Cogent Cogent (NASDAQ: CCOI) is a facilities-based provider of low cost, high speed Internet access and private network services to bandwidth intensive businesses. Cogent’s facilities-based, all-optical IP network provides services in 306 markets globally. Cogent is headquartered at 2450 N St, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent can be reached in the United States at (202) 295-4200 or via email at info@cogentco.com. # # #  

WASHINGTON, D.C. June 29, 2026 – Cogent Communications Holdings, Inc. (“Cogent”) (NASDAQ: CCOI) today announced that its indirect wholly owned subsidiary, Cogent Fiber, LLC, has closed the previously announced sale of 10 data center facilities for an aggregate purchase price of $225 million in cash to a newly formed entity sponsored by I Squared Capital. The 10 facilities are located in Phoenix, AZ, Anaheim, CA, Burbank, CA, Stockton, CA, Atlanta, GA, Chicago, IL, Elkridge, MD, Kansas City, MO, Nashville, TN and Houston, TX. About Cogent Cogent (NASDAQ: CCOI) is a facilities-based provider of low cost, high speed Internet access and private network services to bandwidth intensive businesses. Cogent’s facilities-based, all-optical IP network provides services in 306 markets globally. Cogent is headquartered at 2450 N St, NW, Washington, D.C. 20037. For more information, visit www.cogentco.com. Cogent can be reached in the United States at (202) 295-4200 or via email at info@cogentco.com. # # #