X0202 4 2007-04-30 0 0001158324 COGENT COMMUNICATIONS GROUP INC CCOI 0001296418 Harrison R Reed 1015 31ST ST. NW WASHINGTON DC 20007 0 1 0 0 President & COO common stock 2007-04-30 4 A 0 20000 0 A 30000 D common stock 2007-05-01 4 M 0 4000 6.00 A 34000 D common stock 2007-05-01 4 S 0 4000 25.0927 D 30000 D Option to purchase common stock 6 2007-05-01 4 M 0 4000 0 A 2004-07-14 2014-07-14 common stock 4000 250119 D On April 30, 2007 the board of directors made a grant of 20,000 shares of common stock to Mr. Harrison, subject to certain provisions. The stock grant is unvested and is not owned by Mr. Harrison until April 30, 2009 on which date it becomes fully vested and the property of Mr. Harrison. The stock will fully vest on an earlier date if a change of control occurs. This exercise of options to acquire 4,000 shares of common stock at a price of $6.00 per share and the sale of 4,000 shares of common stock was implemented pursuant to Mr. Harrison's structured sale plan (10b5-1 plan). A portion of these securities owned by Mr. Harrison is not vested. R. Reed Harrison, III 2007-05-01