X0306 4 2015-01-09 0 0000104918 AVISTA CORP AVA 0001194298 THIES MARK T 1411 E. MISSION AVENUE SPOKANE WA 99202 0 1 0 0 Senior Vice President Common Stock - Performance Shares 2015-01-09 4 M 0 6960 A 59198 D Common Stock - Performance Shares 2015-01-09 4 F 0 1904 35.48 D 57294 D Common Stock held by Elizabeth A. Thies 5751 I held by Spouse Conversion of 2012 Performance Shares 2015-01-09 4 M 0 12000 D Common Stock 12000 0 D Each performance share represents a contingent right to receive a share of Avista Common Stock upon achieving a specified performance measure. Shares withheld to pay income tax on Performance Shares acquired 1/09/2015. /s/Mark T. Thies 2015-01-13