Company:  COGENT COMMUNICATIONS GRO ... (CCOI)
Form Type:  4
Filing Date:  4/16/2012 
CIK:  0001158324 
Address:  1015 31ST STREET 
City, State, Zip:  WASHINGTON, District of Columbia 20007 
Telephone:  (202) 295-4200 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$28.97   		Change: 
0.11 (0.38%)  
Trade Time: 
May 21   		Market Cap: 
$1.37B
Description of Business
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  FORM 4
    NAME AND TITLE
    NON DERIVATIVE SECURITIES
    DERIVATIVE SECURITIES
    EXPLANATIONS AND REMARKS
    REPORTING OWNERS
    SIGNATURES
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