Cogent(CCOI) - 2025 Q2 - Quarterly Results

Exhibit 99.1 FOR IMMEDIATE RELEASE Cogent Contacts: For Public Relations: For Investor Relations: Jocelyn Johnson John Chang + 1 (202) 295-4299 + 1 (202) 295-4212 jajohnson@cogentco.com investor.relations@cogentco.com Cogent Communications Reports Second Quarter Results, Increases its Regular Quarterly Dividend on its Common Stock and Increases its Stock Buyback Program by $100.0 Million Financial and Business Highlights Page 1 of 24 · Service revenue was $246.2 million for Q2 2025 and was $247.0 million fo ...