COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

Note: Option positions (PUT/CALL) are excluded.

Q1 2014

Shares 20,973 Value ($000) $745 Avg Close $22.15 Range $17.84 - $24.59

Q4 2013

Shares 12,800 Value ($000) $517 Avg Close $20.46 Range $17.72 - $23.32

Q2 2013

Shares 127,293 Value ($000) $3,583 Avg Close $15.51 Range $14.03 - $16.52

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	20,973	$745	$22.15	$17.84 - $24.59
Q4 2013	12,800	$517	$20.46	$17.72 - $23.32
Q2 2013	127,293	$3,583	$15.51	$14.03 - $16.52