Cogent Communications Holdings, Inc. Securities Fraud Class Action Lawsuit Filed; September 21, 2026, Lead Plaintiff Deadline – Contact Kessler Topaz Meltzer & Check, LLP

Did you buy CCOI common stock between February 29, 2024 and May 1, 2026 ? Affected CCOI Investor Summary Who: Cogent Communications Holdings, Inc. (NASDAQ: CCOI) What: Securities fraud class action lawsuit filed Class Period: February 29, 2024 through May 1, 2026 Deadline to Seek Lead Plaintiff Status: September 21, 2026 Key Lawsuit Allegations: Material misstatements and/or omissions concerning the company's optical wavelength services and the nature of its purported “backlog” of wavelength orders.