SEPTEMBER 21, 2026 INVESTOR DEADLINE: Robbins Geller Rudman & Dowd LLP Files Class Action Lawsuit Against Cogent Communications Holdings, Inc. and Announces that Investors with Substantial Losses Have Opportunity to Lead Class Action Lawsuit - CCOI

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SAN DIEGO, Aug. 28, 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 Monday, September 21, 2026 to seek appointment...