COGENT COMMUNICATIONS HLDGS

Ticker: CCOI CUSIP: 19239V302 Class: Common Stock

Summit Trail Advisors, LLC's Holding History (CIK: 0001698478)

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

Q4 2017

Shares 16 Value ($000) $1 Avg Close $31.42 Range $27.83 - $36.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	16	$1	$31.42	$27.83 - $36.00