COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

MARK SHEPTOFF FINANCIAL PLANNING, LLC's Holding History (CIK: 0001607355)

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

Q2 2015

Shares 607 Value ($000) $21 Avg Close $19.88 Range $18.21 - $21.34

Q1 2015

Shares 4,003 Value ($000) $141 Avg Close $21.41 Range $19.59 - $23.64

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	607	$21	$19.88	$18.21 - $21.34
Q1 2015	4,003	$141	$21.41	$19.59 - $23.64