| Date | Time | Source | Headline | Symbol | Company |
| 04/24/2006 | 4:47PM | PR Newswire (US) | Cogent Communications to Host First Quarter 2006 Earnings Call on May 11, 2006 | AMEX:COI | Cogent Comm Grp. |
| 03/02/2006 | 11:30AM | PR Newswire (US) | Cogent Communications Approved for Listing on NASDAQ | AMEX:COI | Cogent Comm Grp. |
| 02/28/2006 | 2:37PM | PR Newswire (US) | Cogent Communications to Present at Thomas Weisel Partners Conference, March 8th | AMEX:COI | Cogent Comm Grp. |
| 02/16/2006 | 4:30PM | PR Newswire (US) | Cogent Communications to Host Fiscal Year 2005 Earnings Call on March 7, 2006 | AMEX:COI | Cogent Comm Grp. |
| 11/14/2005 | 5:29PM | PR Newswire (US) | Cogent CEO to Speak at Lehman Brothers 2nd Annual Small Cap Conference in Carlsbad, California | AMEX:COI | Cogent Comm Grp. |
| 11/11/2005 | 7:00AM | PR Newswire (US) | Cogent Communications Reports Third Quarter Results | AMEX:COI | Cogent Comm Grp. |
| 11/07/2005 | 9:00AM | PR Newswire (US) | The Russian Federal University Network Selects Cogent as its High-Bandwidth Service Provider | AMEX:COI | Cogent Comm Grp. |
| 10/28/2005 | 8:00AM | PR Newswire (US) | Level 3 and Cogent Reach Agreement on Equitable Peering Terms | AMEX:COI | Cogent Comm Grp. |
| 10/19/2005 | 11:06AM | PR Newswire (US) | Cogent Communications to Host Third Quarter Earnings Call on November 11th, 2005 | AMEX:COI | Cogent Comm Grp. |
| 10/07/2005 | 2:29PM | PR Newswire (US) | Cogent's Standing Offer to Level 3: Turn the Connection Back On, Then Negotiate | AMEX:COI | Cogent Comm Grp. |
| 10/05/2005 | 8:00AM | PR Newswire (US) | SECU, COI and MDRX Update the Investment Community in Exclusive Interviews With WallSt.net | AMEX:COI | Cogent Comm Grp. |
| 09/14/2005 | 5:05PM | PR Newswire (US) | Cogent CEO, Dave Schaeffer, to Speak at Merriman Curhan Ford & Co. Investor Summit 2005 in San Francisco | AMEX:COI | Cogent Comm Grp. |
| 08/12/2005 | 8:00AM | PR Newswire (US) | Cogent Communications Reports Second Quarter Results | AMEX:COI | Cogent Comm Grp. |
| 08/10/2005 | 5:27PM | PR Newswire (US) | Finkelstein, Thompson, and Loughran Announces Investigation of Cogent Communications Group, Inc. | AMEX:COI | Cogent Comm Grp. |
| 07/25/2005 | 5:31PM | PR Newswire (US) | Cogent Communications to Host Second Quarter Earnings Call on August 12, 2005 | AMEX:COI | Cogent Comm Grp. |
| 07/20/2005 | 10:00AM | PR Newswire (US) | Cogent Communications Launches Special Pricing Program for Cable Companies | AMEX:COI | Cogent Comm Grp. |
| 07/15/2005 | 11:09AM | PR Newswire (US) | Cogent Communications Selects Hibernia Atlantic's Wavelength Service | AMEX:COI | Cogent Comm Grp. |
| 07/15/2005 | 10:34AM | PR Newswire (US) | Cogent Communications Selects Hibernia Atlantic's Wavelength Service | AMEX:COI | Cogent Comm Grp. |
| 07/11/2005 | 10:01AM | PR Newswire (US) | Cogent Communications Adds Additional On-Net Markets While Expanding its Transatlantic Capacity | AMEX:COI | Cogent Comm Grp. |
| 07/06/2005 | 9:00AM | PR Newswire (US) | Cogent Communications Ranked by Ovum-RHK as the Largest Ethernet Service Provider in the United States | AMEX:COI | Cogent Comm Grp. |
| 06/14/2005 | 7:43PM | PR Newswire (US) | Cogent Communications Group, Inc. Sells $69 Million of Stock in Public Offering | AMEX:COI | Cogent Comm Grp. |
| 06/07/2005 | 7:04PM | PR Newswire (US) | Cogent Communications Group, Inc. Announces Pricing of Common Stock Offering | AMEX:COI | Cogent Comm Grp. |
| 05/23/2005 | 10:28AM | PR Newswire (US) | Cogent Communications Group, Inc. Announces Proposed Common Stock Offering | AMEX:COI | Cogent Comm Grp. |
| 04/27/2005 | 5:31PM | PR Newswire (US) | Cogent Selects Herakles Data as New Point of Presence in Sacramento | AMEX:COI | Cogent Comm Grp. |
| 03/22/2005 | 5:57PM | PR Newswire (US) | Cogent Communications Announces Effective Date for 1-for-20 Reverse Stock Split | AMEX:COI | Cogent Comm Grp. |
| 02/18/2005 | 4:15PM | PR Newswire (US) | Cogent Communications Announces 1-for-20 Reverse Stock Split | AMEX:COI | Cogent Comm Grp. |
| 02/15/2005 | 8:40AM | PR Newswire (US) | Cogent Communications Completes Conversion of Preferred Shares Into Common Shares | AMEX:COI | Cogent Comm Grp. |
| 02/15/2005 | 8:40AM | PR Newswire (US) | Cogent Communications to Start Providing Earnings Guidance | AMEX:COI | Cogent Comm Grp. |
| 02/14/2005 | 6:16PM | PR Newswire (US) | Cogent Communications Files Registration for Public Offering | AMEX:COI | Cogent Comm Grp. |
| 01/27/2005 | 10:09AM | PR Newswire (US) | Cogent Communications Announces Conversion of Preferred Shares into Common Shares | AMEX:COI | Cogent Comm Grp. |