AVISTA CORP

Ticker: AVA CUSIP: 05379B107 Class: Common Stock

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q4 2025

Shares 61,921 Value ($000) $2,386 Avg Close $38.78 Range $36.05 - $41.60

Q3 2025

Shares 77,020 Value ($000) $2,912 Avg Close $36.47 Range $34.98 - $37.71

Q2 2025

Shares 83,984 Value ($000) $3,187 Avg Close $38.22 Range $35.57 - $41.49

Q1 2025

Shares 86,529 Value ($000) $3,623 Avg Close $36.27 Range $33.08 - $40.42

Q4 2024

Shares 96,959 Value ($000) $3,552 Avg Close $35.43 Range $33.54 - $37.30

Q3 2024

Shares 83,528 Value ($000) $3,237 Avg Close $35.26 Range $31.03 - $37.17

Q2 2024

Shares 87,103 Value ($000) $3,015 Avg Close $32.90 Range $30.23 - $35.65

Q1 2024

Shares 95,113 Value ($000) $3,331 Avg Close $30.96 Range $28.83 - $33.10

Q4 2023

Shares 51,789 Value ($000) $1,851 Avg Close $30.40 Range $27.22 - $33.43

Q3 2023

Shares 63,330 Value ($000) $2,050 Avg Close $31.62 Range $28.30 - $35.30

Q2 2023

Shares 89,445 Value ($000) $3,513 Avg Close $37.05 Range $33.57 - $39.26

Q1 2023

Shares 97,145 Value ($000) $4 Avg Close $35.81 Range $33.61 - $38.95

Q4 2022

Shares 92,845 Value ($000) $4 Avg Close $34.22 Range $30.37 - $38.57

Q3 2022

Shares 99,245 Value ($000) $3,687 Avg Close $35.39 Range $31.48 - $38.26

Q2 2022

Shares 88,350 Value ($000) $3,844 Avg Close $35.99 Range $32.85 - $38.84

Q1 2022

Shares 93,150 Value ($000) $4,206 Avg Close $36.52 Range $34.56 - $39.09

Q4 2021

Shares 88,150 Value ($000) $3,919 Avg Close $32.99 Range $30.79 - $35.25

Q3 2021

Shares 97,165 Value ($000) $3,801 Avg Close $34.00 Range $31.82 - $35.77

Q2 2021

Shares 99,165 Value ($000) $4,231 Avg Close $36.84 Range $34.08 - $39.14

Q1 2021

Shares 97,545 Value ($000) $4,658 Avg Close $32.79 Range $29.04 - $39.34

Q4 2020

Shares 104,575 Value ($000) $4,198 Avg Close $28.86 Range $25.27 - $32.25

Q3 2020

Shares 119,310 Value ($000) $4,071 Avg Close $28.20 Range $25.81 - $29.90

Q2 2020

Shares 103,210 Value ($000) $3,756 Avg Close $30.48 Range $25.82 - $35.07

Q1 2020

Shares 111,410 Value ($000) $4,734 Avg Close $36.73 Range $24.60 - $40.62

Q4 2019

Shares 108,560 Value ($000) $5,221 Avg Close $36.05 Range $34.67 - $37.62

Q3 2019

Shares 115,450 Value ($000) $5,592 Avg Close $34.88 Range $32.92 - $37.21

Q2 2019

Shares 111,750 Value ($000) $4,984 Avg Close $31.69 Range $29.92 - $33.70

Q1 2019

Shares 104,950 Value ($000) $4,263 Avg Close $30.30 Range $29.30 - $31.80

Q4 2018

Shares 112,450 Value ($000) $4,777 Avg Close $36.19 Range $30.77 - $38.41

Q3 2018

Shares 117,850 Value ($000) $5,958 Avg Close $37.08 Range $35.90 - $38.29

Q2 2018

Shares 96,650 Value ($000) $5,090 Avg Close $37.64 Range $36.23 - $38.27

Q1 2018

Shares 87,850 Value ($000) $4,410 Avg Close $36.12 Range $34.13 - $37.40

Q4 2017

Shares 83,450 Value ($000) $4,297 Avg Close $36.82 Range $36.30 - $37.16

Q3 2017

Shares 90,692 Value ($000) $4,695 Avg Close $35.25 Range $28.98 - $37.15

Q2 2017

Shares 90,492 Value ($000) $3,852 Avg Close $29.21 Range $26.74 - $31.26

Q1 2017

Shares 138,592 Value ($000) $5,412 Avg Close $27.19 Range $26.10 - $28.15

Q4 2016

Shares 132,622 Value ($000) $5,304 Avg Close $27.83 Range $26.71 - $29.71

Q3 2016

Shares 156,122 Value ($000) $6,524 Avg Close $28.97 Range $27.56 - $30.72

Q2 2016

Shares 158,122 Value ($000) $7,084 Avg Close $27.70 Range $25.92 - $30.44

Q1 2016

Shares 155,922 Value ($000) $6,358 Avg Close $25.24 Range $22.90 - $27.82

Q4 2015

Shares 162,742 Value ($000) $5,756 Avg Close $22.74 Range $21.53 - $25.21

Q3 2015

Shares 199,642 Value ($000) $6,637 Avg Close $20.96 Range $19.68 - $22.33

Q2 2015

Shares 165,527 Value ($000) $5,073 Avg Close $20.96 Range $19.69 - $22.33

Q1 2015

Shares 165,327 Value ($000) $5,651 Avg Close $22.48 Range $20.78 - $24.58

Q4 2014

Shares 179,177 Value ($000) $6,334 Avg Close $21.73 Range $19.40 - $23.96

Q3 2014

Shares 164,677 Value ($000) $5,028 Avg Close $20.15 Range $19.08 - $21.13

Q2 2014

Shares 176,007 Value ($000) $5,900 Avg Close $19.80 Range $18.69 - $21.12

Q1 2014

Shares 155,907 Value ($000) $4,779 Avg Close $18.00 Range $17.07 - $19.19

Q4 2013

Shares 156,107 Value ($000) $4,401 Avg Close $16.79 Range $15.77 - $17.52

Q3 2013

Shares 153,507 Value ($000) $4,053 Avg Close $16.58 Range $15.56 - $17.59

Q2 2013

Shares 153,507 Value ($000) $4,148 Avg Close $16.44 Range $15.47 - $17.44

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	61,921	$2,386	$38.78	$36.05 - $41.60
Q3 2025	77,020	$2,912	$36.47	$34.98 - $37.71
Q2 2025	83,984	$3,187	$38.22	$35.57 - $41.49
Q1 2025	86,529	$3,623	$36.27	$33.08 - $40.42
Q4 2024	96,959	$3,552	$35.43	$33.54 - $37.30
Q3 2024	83,528	$3,237	$35.26	$31.03 - $37.17
Q2 2024	87,103	$3,015	$32.90	$30.23 - $35.65
Q1 2024	95,113	$3,331	$30.96	$28.83 - $33.10
Q4 2023	51,789	$1,851	$30.40	$27.22 - $33.43
Q3 2023	63,330	$2,050	$31.62	$28.30 - $35.30
Q2 2023	89,445	$3,513	$37.05	$33.57 - $39.26
Q1 2023	97,145	$4	$35.81	$33.61 - $38.95
Q4 2022	92,845	$4	$34.22	$30.37 - $38.57
Q3 2022	99,245	$3,687	$35.39	$31.48 - $38.26
Q2 2022	88,350	$3,844	$35.99	$32.85 - $38.84
Q1 2022	93,150	$4,206	$36.52	$34.56 - $39.09
Q4 2021	88,150	$3,919	$32.99	$30.79 - $35.25
Q3 2021	97,165	$3,801	$34.00	$31.82 - $35.77
Q2 2021	99,165	$4,231	$36.84	$34.08 - $39.14
Q1 2021	97,545	$4,658	$32.79	$29.04 - $39.34
Q4 2020	104,575	$4,198	$28.86	$25.27 - $32.25
Q3 2020	119,310	$4,071	$28.20	$25.81 - $29.90
Q2 2020	103,210	$3,756	$30.48	$25.82 - $35.07
Q1 2020	111,410	$4,734	$36.73	$24.60 - $40.62
Q4 2019	108,560	$5,221	$36.05	$34.67 - $37.62
Q3 2019	115,450	$5,592	$34.88	$32.92 - $37.21
Q2 2019	111,750	$4,984	$31.69	$29.92 - $33.70
Q1 2019	104,950	$4,263	$30.30	$29.30 - $31.80
Q4 2018	112,450	$4,777	$36.19	$30.77 - $38.41
Q3 2018	117,850	$5,958	$37.08	$35.90 - $38.29
Q2 2018	96,650	$5,090	$37.64	$36.23 - $38.27
Q1 2018	87,850	$4,410	$36.12	$34.13 - $37.40
Q4 2017	83,450	$4,297	$36.82	$36.30 - $37.16
Q3 2017	90,692	$4,695	$35.25	$28.98 - $37.15
Q2 2017	90,492	$3,852	$29.21	$26.74 - $31.26
Q1 2017	138,592	$5,412	$27.19	$26.10 - $28.15
Q4 2016	132,622	$5,304	$27.83	$26.71 - $29.71
Q3 2016	156,122	$6,524	$28.97	$27.56 - $30.72
Q2 2016	158,122	$7,084	$27.70	$25.92 - $30.44
Q1 2016	155,922	$6,358	$25.24	$22.90 - $27.82
Q4 2015	162,742	$5,756	$22.74	$21.53 - $25.21
Q3 2015	199,642	$6,637	$20.96	$19.68 - $22.33
Q2 2015	165,527	$5,073	$20.96	$19.69 - $22.33
Q1 2015	165,327	$5,651	$22.48	$20.78 - $24.58
Q4 2014	179,177	$6,334	$21.73	$19.40 - $23.96
Q3 2014	164,677	$5,028	$20.15	$19.08 - $21.13
Q2 2014	176,007	$5,900	$19.80	$18.69 - $21.12
Q1 2014	155,907	$4,779	$18.00	$17.07 - $19.19
Q4 2013	156,107	$4,401	$16.79	$15.77 - $17.52
Q3 2013	153,507	$4,053	$16.58	$15.56 - $17.59
Q2 2013	153,507	$4,148	$16.44	$15.47 - $17.44