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Stock Trading History of Weingarten Tim

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Weingarten Tim since year 2005. The trader's CIK number is 1268677. At the time of this reporting, Weingarten Tim is the Director of Cogent Communications Group Inc . (stock ticker symbol COI). See this page for all insider trading activities at Cogent Communications Group Inc .

Stock purchases, sales, and option exercises reported by insider *Weingarten Tim* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2009-01-05	CCOI	Cogent Communications Group Inc	Purchase	11,227	6.69	75,108
2007-03-23	COI	Cogent Communications Group Inc	Sale	1,403,152	23.41	32,847,788
2006-11-14	COI	Cogent Communications Group Inc	Sale	1,400,000	14.64	20,496,000
2006-06-06	COI	Cogent Communications Group Inc	Sale	657,101	8.53	5,603,428

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Weingarten Tim (Director of Cogent Communications Group Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.