CCOI SHAREHOLDER NOTICE: Faruqi & Faruqi, LLP Reminds Cogent Investors of Securities Class Action Lawsuit Deadline on September 21, 2026

Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson  Encourages Investors Who Suffered Losses In Cogent To Contact Him Directly To Discuss Their Options If you purchased or acquired securities in Cogent  between February 29, 2024 and May 1, 2026 and would like to discuss your legal rights, call Faruqi & Faruqi partner Josh Wilson directly at 877-247-4292 or 212-983-9330 (Ext. 1310). [You may also click here for additional information] NEW YORK, Sept.

PRNewsWire • 11 hours ago

CCOI Shareholder Alert: Investors With Losses May Seek to Lead the Class Action in COGENT COMMUNICATIONS HOLDINGS, INC. Securities Lawsuit - Contact Levi & Korsinsky

Time-Sensitive: Allegations Focus on Dividend Cut, Investor Losses, and Forced-Sale Risk. The securities action asserts that Cogent investors were exposed to an allegedly unsustainable dividend policy and insider pledging risk before CCOI suffered steep losses.

PRNewsWire • 10 hours ago

CCOI 5-DAY DEADLINE ALERT: Hagens Berman Alerts CCOI Investors to September 21, 2026 Lead Plaintiff Deadline in Securities Class Action

SAN FRANCISCO--(BUSINESS WIRE)---- $ccoi #ccoi--Hagens Berman is investigating claims in a class action complaint filed on behalf of investors in Cogent Communications (CCOI) against the Company.

Business Wire • 11 hours ago

Bronstein, Gewirtz & Grossman LLC Urges Cogent Communications Holdings, Inc. Investors to Act: Class Action Filed Alleging Investor Harm

NEW YORK, Sept. 16, 2026 (GLOBE NEWSWIRE) -- Bronstein, Gewirtz & Grossman, LLC, a nationally recognized investor-rights law firm, announces that a class action lawsuit has been filed against Cogent Communications Holdings, Inc. (NASDAQ: CCOI) and certain of its officers.

GlobeNewsWire • 8 hours ago

Kaplan Fox & Kilsheimer LLP Announces the Filing of a Securities Class Action Against Cogent Communications Holdings, Inc. (CCOI) - Deadline is September 21, 2026

New York, New York--(Newsfile Corp. - September 16, 2026) - Kaplan Fox & Kilsheimer LLP announces that a class action lawsuit has been filed against Cogent Communications Holdings, Inc. ("Cogent" or the "Company") (NASDAQ: CCOI) on behalf of investors that purchased or otherwise acquired Cogent securities between February 29, 2024 and May 1, 2026 (the "Class Period"). CLICK HERE TO JOIN THE CASE If you are an investor in Cogent and have suffered losses, you may CLICK HERE to contact us.

Newsfile Corp • 4 hours ago

Kaplan Fox Urges Investors of Cogent Communications Holdings, Inc. (NASDAQ: CCOI) to Seek a Leadership Role Before September 21, 2026

NEW YORK, Sept. 16, 2026 (GLOBE NEWSWIRE) -- Kaplan Fox & Kilsheimer LLP announces that a class action lawsuit has been filed against Cogent Communications Holdings, Inc. (“Cogent” or the “Company”) (NASDAQ: CCOI) on behalf of investors that purchased or otherwise acquired Cogent securities between February 29, 2024 and May 1, 2026 (the “Class Period”).

GlobeNewsWire • 9 hours ago

CCOI Shareholder Alert: September 21, 2026 Lead Plaintiff Deadline in COGENT COMMUNICATIONS HOLDINGS, INC. Securities Class Action - Contact SueWallSt

Alert: Claims focus on alleged operational difficulties in converting the former Sprint voice network into a wavelength-optimized platform, including extended provisioning cycles. Alert: Claims focus on alleged operational difficulties in converting the former Sprint voice network into a wavelength-optimized platform, including extended provisioning cycles.

GlobeNewsWire • Sep 15, 2026

INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Cogent Communications Holdings, Inc. of Class Action Lawsuit and Upcoming Deadlines – CCOI

NEW YORK, Sept. 15, 2026 (GLOBE NEWSWIRE) -- Pomerantz LLP announces that a class action lawsuit has been filed against Cogent Communications Holdings, Inc. (“Cogent” or the “Company”) (NASDAQ: CCOI). Such investors are advised to contact Danielle Peyton at  [email protected] or 646-581-9980, (or 888.4-POMLAW), toll-free, Ext. 7980. Those who inquire by e-mail are encouraged to include their mailing address, telephone number, and the number of shares purchased.

GlobeNewsWire • Sep 15, 2026

CCOI 6-DAY DEADLINE ALERT: Cogent Communications Holdings, Inc. Investors Alerted to September 21, 2026 Lead Plaintiff Deadline in Securities Fraud Class Action

SAN FRANCISCO, Sept. 15, 2026 /PRNewswire/ -- Hagens Berman Sobol Shapiro LLP —a national plaintiffs' rights law firm with a premier securities practice group—notifies investors in Cogent Communications Holdings, Inc. (NASDAQ: CCOI) of the upcoming September 21, 2026 lead plaintiff deadline in the ongoing securities class action.

PRNewsWire • Sep 15, 2026

COGENT COMMUNICATIONS HOLDINGS, INC. INVESTORS WITH LOSSES HAVE UNTIL SEPTEMBER 21, 2026 TO JOIN SECURITIES CLASS ACTION – Bernstein Liebhard LLP Announces Deadline

NEW YORK, Sept. 15, 2026 (GLOBE NEWSWIRE) -- Bernstein Liebhard LLP, a nationally acclaimed investor rights law firm, reminds Cogent Communications Holdings, Inc. (“Cogent” or the “Company”) (NASDAQ: CCOI) of the  September 21, 2026 deadline involving a securities fraud class action lawsuit commenced against the Company.

GlobeNewsWire • Sep 15, 2026