OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

CoreFirst Bank & Trust's Holding History (CIK: 0001845199)

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

Q3 2021

Shares 500 Value ($000) $28 Avg Close $47.36 Range $42.04 - $52.53

Q2 2021

Shares 500 Value ($000) $24 Avg Close $42.43 Range $40.25 - $44.44

Q1 2021

Shares 500 Value ($000) $23 Avg Close $37.61 Range $34.41 - $41.57

Q4 2020

Shares 500 Value ($000) $21 Avg Close $35.50 Range $31.11 - $38.92

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	500	$28	$47.36	$42.04 - $52.53
Q2 2021	500	$24	$42.43	$40.25 - $44.44
Q1 2021	500	$23	$37.61	$34.41 - $41.57
Q4 2020	500	$21	$35.50	$31.11 - $38.92