AVISTA CORP

Ticker: AVA CUSIP: 05379B107 Class: Common Stock

BOKF, NA's Holding History (CIK: 0000009634)

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

Q2 2017

Shares 5,489 Value ($000) $233 Avg Close $29.21 Range $26.74 - $31.26

Q1 2017

Shares 5,655 Value ($000) $221 Avg Close $27.19 Range $26.10 - $28.15

Q4 2016

Shares 5,358 Value ($000) $214 Avg Close $27.83 Range $26.71 - $29.71

Q3 2016

Shares 5,176 Value ($000) $216 Avg Close $28.97 Range $27.56 - $30.72

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2017	5,489	$233	$29.21	$26.74 - $31.26
Q1 2017	5,655	$221	$27.19	$26.10 - $28.15
Q4 2016	5,358	$214	$27.83	$26.71 - $29.71
Q3 2016	5,176	$216	$28.97	$27.56 - $30.72