Legal Insider Trading Data | Free and Professional Subscription Services | Insider Insights urn:uuid:5214c635-81b3-ec9e-cad1-af78ccf8c326 2026-06-13T18:47:32-04:00 Jonathan Moreland Profit from legal insider trading. InsiderInsights.com provides free insider trading data tools and resources, and professional grade subscription based real time Form 4 data, analysis and services CCOI: FERGUSON LEWIS H (DIR) Sold (S) 2,800 Shares of COGENT COMMUNICATIONS HOLDINGS INC for $20.36 on 5/28 urn:uuid:7559c2cf-7c6f-fee1-3ce1-12c0cb6ded2c 2026-05-28T16:01:47-04:00 CCOI: KENNEDY SHERYL LYNN (DIR) Sold (S) 3,300 Shares of COGENT COMMUNICATIONS HOLDINGS INC for $16.22 on 5/14 urn:uuid:7d1d76a4-1ee3-38eb-9717-36eb8c29bd6e 2026-05-18T16:12:00-04:00 CCOI: SCHAEFFER DAVE (CB,CEO,PR,DIR) Acquired (JB) 1mm Shares of COGENT COMMUNICATIONS HOLDINGS INC for $0.00 on 5/4 urn:uuid:3476e657-f53d-461e-5b6b-74c491d33985 2026-05-04T16:22:31-04:00 CCOI: SCHAEFFER DAVE (CB,CEO,PR,DIR) Acquired (JB) 1mm Shares of COGENT COMMUNICATIONS HOLDINGS INC for $0.00 on 5/4 urn:uuid:ac1faa4a-c42c-ffba-24e4-301a3e9f5198 2026-05-04T16:22:31-04:00 CCOI: SCHAEFFER DAVE (CB,CEO,PR,DIR) Disposed (JS) 1mm Shares of COGENT COMMUNICATIONS HOLDINGS INC for $0.00 on 5/4 urn:uuid:c2b2f20c-17f8-d46d-c365-8148a79f1119 2026-05-04T16:22:31-04:00 CCOI: SCHAEFFER DAVE (CB,CEO,PR,DIR) Acquired (JB) 29,333 Shares of COGENT COMMUNICATIONS HOLDINGS INC for $0.00 on 4/1 urn:uuid:df9bc64a-7397-3aae-d3f3-62c358bdaff8 2026-04-02T16:26:00-04:00 CCOI: SCHAEFFER DAVE (CB,CEO,PR,DIR) Disposed (JS) 88k Shares of COGENT COMMUNICATIONS HOLDINGS INC for $0.00 on 4/1 urn:uuid:a9ba2d15-ffc1-e4b6-0286-f140a765a66b 2026-04-02T16:26:00-04:00 CCOI: MONTAGNER MARC (DIR) Acquired (JB) 3,445 Shares of COGENT COMMUNICATIONS HOLDINGS INC for $0.00 on 3/31 urn:uuid:d85b0d38-2942-d009-09c7-446e61aaf96c 2026-03-31T17:39:55-04:00 CCOI: KENNEDY SHERYL LYNN (DIR) Acquired (JB) 3,445 Shares of COGENT COMMUNICATIONS HOLDINGS INC for $0.00 on 3/31 urn:uuid:36e53757-1d7e-0372-792d-5609dab4c49c 2026-03-31T17:38:44-04:00 CCOI: HOWELL DENEEN C (DIR) Acquired (JB) 3,445 Shares of COGENT COMMUNICATIONS HOLDINGS INC for $0.00 on 3/31 urn:uuid:1cf0f469-5691-b28c-bae5-0dc1b5cb33ce 2026-03-31T17:37:48-04:00