COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

OSTERWEIS CAPITAL MANAGEMENT INC's Holding History (CIK: 0001007524)

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

Q2 2017

Shares 72,120 Value ($000) $2,892 Avg Close $26.76 Range $24.58 - $29.07

Q1 2017

Shares 32,625 Value ($000) $1,405 Avg Close $26.58 Range $24.73 - $28.22

Q4 2016

Shares 63,130 Value ($000) $2,610 Avg Close $24.11 Range $21.53 - $26.92

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	72,120	$2,892	$26.76	$24.58 - $29.07
Q1 2017	32,625	$1,405	$26.58	$24.73 - $28.22
Q4 2016	63,130	$2,610	$24.11	$21.53 - $26.92