Thrasher Warren

Related Filers (1)

Ownership (4)

4
Friday, 10/28/2005
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Thursday, 2/17/2005
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 9/10/2004
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
3
Wednesday, 8/11/2004
COGENT COMMUNICATIONS GROUP INC: Initial statement of beneficial ownership of securities
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