OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

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

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

Q4 2017

Shares 6 Value ($000) $0 Avg Close $36.46 Range $34.36 - $38.83

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	6	$0	$36.46	$34.36 - $38.83