NEW YORK, Aug. 20, 2026 /PRNewswire/ -- 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 newaction@pomlaw.com 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. 

SAN FRANCISCO, Aug. 20, 2026 /PRNewswire/ -- Hagens Berman Sobol Shapiro LLP alerts investors in Cogent Communications Holdings (NASDAQ: CCOI) that a securities class action has been filed after questions arose about a key metric's indication about actual growth prospects. The lawsuit seeks to represent investors who purchased or otherwise acquired Cogent common stock between February 29, 2024 and May 1, 2026.

SAN DIEGO, Aug. 19, 2026 /PRNewswire/ -- Robbins Geller Rudman & Dowd LLP announces that purchasers of Cogent Communications Holdings, Inc. (NASDAQ: CCOI) common stock between February 29, 2024 and May 1, 2026 (the "Class Period"), have until September 21, 2026 to seek appointment as lead plaintiff of the Cogent class action lawsuit.  Captioned City of Southfield Fire and Police Retirement System v. Cogent Communications Holdings, Inc., No. 26-cv-02609 (D.D.C.), the Cogent class action lawsuit charges Cogent and certain of Cogent's executive officers with violations of the Securities Exchange Act of 1934.

SAN FRANCISCO, Aug. 18, 2026 /PRNewswire/ -- Hagens Berman Sobol Shapiro LLP alerts investors in Cogent Communications Holdings (NASDAQ: CCOI) that a securities class action has been filed after questions arose about a key metric's indication about actual growth prospects. The lawsuit seeks to represent investors who purchased or otherwise acquired Cogent common stock between February 29, 2024 and May 1, 2026.

LOS ANGELES, Aug. 17, 2026 /PRNewswire/ -- The DJS Law Group reminds investors of a class action lawsuit against Cogent Communications Holdings, Inc. ("Cogent" or "the Company") (NASDAQ: CCOI) violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission.