ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

State of Alaska, Department of Revenue's Holding History (CIK: 0001370102)

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

Q4 2025

Shares 25,634 Value ($000) $2 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 27,434 Value ($000) $2 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 28,833 Value ($000) $2 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 30,063 Value ($000) $2 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 29,263 Value ($000) $2 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 36,907 Value ($000) $2 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 43,302 Value ($000) $2 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 38,347 Value ($000) $2 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 41,522 Value ($000) $2 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 43,362 Value ($000) $2 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 44,487 Value ($000) $2 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 43,472 Value ($000) $2 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 44,037 Value ($000) $2 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 44,297 Value ($000) $2,347 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 46,887 Value ($000) $2,747 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 76,172 Value ($000) $4,758 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 81,752 Value ($000) $5,024 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 89,564 Value ($000) $5,013 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 91,431 Value ($000) $5,097 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 64,128 Value ($000) $3,472 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 67,449 Value ($000) $3,475 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 69,016 Value ($000) $3,564 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 158,211 Value ($000) $7,567 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 165,215 Value ($000) $7,977 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 152,175 Value ($000) $8,326 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 160,541 Value ($000) $8,657 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 130,309 Value ($000) $6,394 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 141,171 Value ($000) $6,651 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 138,099 Value ($000) $5,833 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 158,114 Value ($000) $6,728 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 178,637 Value ($000) $7,559 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 85,307 Value ($000) $3,484 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 69,657 Value ($000) $2,966 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 48,087 Value ($000) $1,998 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 24,317 Value ($000) $976 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 22,861 Value ($000) $904 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 4,891 Value ($000) $185 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 4,565 Value ($000) $174 Avg Close $29.26 Range $27.72 - $30.41

Q4 2015

Shares 6,670 Value ($000) $416 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 3,520 Value ($000) $205 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 3,520 Value ($000) $203 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 3,520 Value ($000) $221 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 3,520 Value ($000) $233 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 3,520 Value ($000) $195 Avg Close $20.07 Range $19.08 - $21.06

Q2 2014

Shares 3,520 Value ($000) $214 Avg Close $19.98 Range $19.02 - $21.06

Q1 2014

Shares 3,520 Value ($000) $199 Avg Close $18.07 Range $16.97 - $19.54

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	25,634	$2	$66.83	$64.30 - $69.59
Q3 2025	27,434	$2	$63.88	$59.07 - $67.04
Q2 2025	28,833	$2	$60.10	$55.76 - $64.19
Q1 2025	30,063	$2	$59.57	$54.52 - $64.99
Q4 2024	29,263	$2	$58.37	$54.30 - $62.16
Q3 2024	36,907	$2	$54.38	$48.12 - $58.63
Q2 2024	43,302	$2	$47.71	$44.54 - $49.81
Q1 2024	38,347	$2	$46.11	$44.14 - $48.90
Q4 2023	41,522	$2	$46.45	$41.77 - $50.29
Q3 2023	43,362	$2	$47.84	$44.23 - $51.62
Q2 2023	44,487	$2	$49.05	$46.13 - $51.23
Q1 2023	43,472	$2	$48.28	$45.19 - $50.77
Q4 2022	44,037	$2	$48.07	$42.22 - $51.90
Q3 2022	44,297	$2,347	$53.87	$47.25 - $57.82
Q2 2022	46,887	$2,747	$53.50	$48.14 - $57.66
Q1 2022	76,172	$4,758	$52.37	$48.33 - $55.78
Q4 2021	81,752	$5,024	$50.05	$47.35 - $54.07
Q3 2021	89,564	$5,013	$51.28	$47.64 - $54.21
Q2 2021	91,431	$5,097	$48.83	$45.94 - $51.03
Q1 2021	64,128	$3,472	$42.55	$39.42 - $47.06
Q4 2020	67,449	$3,475	$45.61	$40.48 - $49.39
Q3 2020	69,016	$3,564	$44.02	$39.84 - $46.94
Q2 2020	158,211	$7,567	$40.72	$36.29 - $45.31
Q1 2020	165,215	$7,977	$45.48	$31.34 - $50.16
Q4 2019	152,175	$8,326	$43.82	$42.11 - $45.80
Q3 2019	160,541	$8,657	$42.08	$39.53 - $44.83
Q2 2019	130,309	$6,394	$38.79	$37.00 - $40.91
Q1 2019	141,171	$6,651	$36.14	$32.70 - $38.77
Q4 2018	138,099	$5,833	$35.19	$32.65 - $37.38
Q3 2018	158,114	$6,728	$34.13	$32.72 - $35.18
Q2 2018	178,637	$7,559	$32.46	$30.20 - $34.35
Q1 2018	85,307	$3,484	$30.84	$28.88 - $33.21
Q4 2017	69,657	$2,966	$33.80	$31.68 - $35.41
Q3 2017	48,087	$1,998	$32.04	$30.14 - $33.72
Q2 2017	24,317	$976	$30.93	$29.83 - $32.31
Q1 2017	22,861	$904	$29.08	$27.58 - $30.63
Q4 2016	4,891	$185	$27.74	$26.27 - $29.13
Q3 2016	4,565	$174	$29.26	$27.72 - $30.41
Q4 2015	6,670	$416	$21.84	$20.45 - $23.41
Q3 2015	3,520	$205	$21.20	$19.59 - $22.72
Q2 2015	3,520	$203	$21.63	$20.41 - $22.74
Q1 2015	3,520	$221	$23.04	$21.25 - $25.01
Q4 2014	3,520	$233	$21.73	$19.32 - $24.55
Q3 2014	3,520	$195	$20.07	$19.08 - $21.06
Q2 2014	3,520	$214	$19.98	$19.02 - $21.06
Q1 2014	3,520	$199	$18.07	$16.97 - $19.54