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COGENT COMMUNICATIONS HOLDINGS, INC.
SC 13D/A
18 filings
All SC 13D/A Filings
Complete history of SC 13D/A filings with the SEC
| Date Filed | View on EDGAR |
|---|---|
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27
Jun
Jun 27, 2007
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29
Nov
Nov 29, 2006
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20
Nov
Nov 20, 2006
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20
Nov
Nov 20, 2006
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19
Sep
Sep 19, 2006
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03
Jul
Jul 03, 2006
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23
Jun
Jun 23, 2006
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16
Jun
Jun 16, 2006
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27
Jun
Jun 27, 2005
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14
Apr
Apr 14, 2005
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16
Mar
Mar 16, 2005
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23
Feb
Feb 23, 2005
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17
Dec
Dec 17, 2004
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05
Aug
Aug 05, 2004
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21
Apr
Apr 21, 2004
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09
Apr
Apr 09, 2004
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09
Apr
Apr 09, 2004
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06
Apr
Apr 06, 2004
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