OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2018

Shares 4,131 Value ($000) $205 Avg Close $39.10 Range $36.10 - $42.66

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	4,131	$205	$39.10	$36.10 - $42.66