Cite Filings / CCOI / 0001005477-07-002444

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Initial Statement of Ownership

COGENT COMMUNICATIONS HOLDINGS, INC. Filed 2007-04-06 Acc 0001005477-07-002444

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3 Initial Statement of Ownership , xslF345X02/edgar123.xml

Around this filing

2010-03-09 3 Initial Statement of Ownership
2007-04-06 3 Initial Statement of Ownership
2007-04-03 4 Changes in Ownership
2007-04-03 4 Changes in Ownership
2007-04-03 4 Changes in Ownership
2007-03-30 DEF 14A Proxy Statement
2006-11-22 3 Initial Statement of Ownership

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