ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

MAIRS & POWER INC's Holding History (CIK: 0001070134)

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

Q4 2025

Shares 2,956,947 Value ($000) $192,231 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 2,993,643 Value ($000) $201,801 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 3,042,142 Value ($000) $183,958 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 3,044,638 Value ($000) $195,922 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 3,913,967 Value ($000) $231,472 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 4,095,219 Value ($000) $248,539 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 3,831,399 Value ($000) $195,018 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 3,321,368 Value ($000) $167,397 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 3,173,484 Value ($000) $162,800 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 3,105,934 Value ($000) $150,483 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 2,717,431 Value ($000) $142,611 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 1,087,797 Value ($000) $58,088 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 681,800 Value ($000) $37,642 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 726,317 Value ($000) $38,488 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 770,745 Value ($000) $45,173 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 773,831 Value ($000) $48,349 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 774,984 Value ($000) $47,638 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 776,895 Value ($000) $43,491 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 772,081 Value ($000) $43,051 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 743,958 Value ($000) $40,293 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 515,221 Value ($000) $26,549 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 224,924 Value ($000) $11,617 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 5,618 Value ($000) $269 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 5,618 Value ($000) $271 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 5,618 Value ($000) $307 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 5,618 Value ($000) $303 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 5,618 Value ($000) $276 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 7,228 Value ($000) $341 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 7,228 Value ($000) $305 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 7,228 Value ($000) $308 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 7,597 Value ($000) $322 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 7,228 Value ($000) $295 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 7,228 Value ($000) $308 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 7,228 Value ($000) $300 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 8,728 Value ($000) $351 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 8,728 Value ($000) $346 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 8,728 Value ($000) $331 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 8,728 Value ($000) $334 Avg Close $29.26 Range $27.72 - $30.41

Q2 2016

Shares 8,728 Value ($000) $347 Avg Close $27.46 Range $25.25 - $29.85

Q1 2016

Shares 4,364 Value ($000) $324 Avg Close $24.74 Range $22.13 - $27.34

Q4 2015

Shares 4,364 Value ($000) $273 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 4,364 Value ($000) $255 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 4,364 Value ($000) $252 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 4,364 Value ($000) $275 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 4,497 Value ($000) $299 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 4,497 Value ($000) $249 Avg Close $20.07 Range $19.08 - $21.06

Q2 2014

Shares 4,564 Value ($000) $278 Avg Close $19.98 Range $19.02 - $21.06

Q1 2014

Shares 4,564 Value ($000) $259 Avg Close $18.07 Range $16.97 - $19.54

Q4 2013

Shares 3,955 Value ($000) $204 Avg Close $17.48 Range $16.43 - $18.23

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,956,947	$192,231	$66.83	$64.30 - $69.59
Q3 2025	2,993,643	$201,801	$63.88	$59.07 - $67.04
Q2 2025	3,042,142	$183,958	$60.10	$55.76 - $64.19
Q1 2025	3,044,638	$195,922	$59.57	$54.52 - $64.99
Q4 2024	3,913,967	$231,472	$58.37	$54.30 - $62.16
Q3 2024	4,095,219	$248,539	$54.38	$48.12 - $58.63
Q2 2024	3,831,399	$195,018	$47.71	$44.54 - $49.81
Q1 2024	3,321,368	$167,397	$46.11	$44.14 - $48.90
Q4 2023	3,173,484	$162,800	$46.45	$41.77 - $50.29
Q3 2023	3,105,934	$150,483	$47.84	$44.23 - $51.62
Q2 2023	2,717,431	$142,611	$49.05	$46.13 - $51.23
Q1 2023	1,087,797	$58,088	$48.28	$45.19 - $50.77
Q4 2022	681,800	$37,642	$48.07	$42.22 - $51.90
Q3 2022	726,317	$38,488	$53.87	$47.25 - $57.82
Q2 2022	770,745	$45,173	$53.50	$48.14 - $57.66
Q1 2022	773,831	$48,349	$52.37	$48.33 - $55.78
Q4 2021	774,984	$47,638	$50.05	$47.35 - $54.07
Q3 2021	776,895	$43,491	$51.28	$47.64 - $54.21
Q2 2021	772,081	$43,051	$48.83	$45.94 - $51.03
Q1 2021	743,958	$40,293	$42.55	$39.42 - $47.06
Q4 2020	515,221	$26,549	$45.61	$40.48 - $49.39
Q3 2020	224,924	$11,617	$44.02	$39.84 - $46.94
Q2 2020	5,618	$269	$40.72	$36.29 - $45.31
Q1 2020	5,618	$271	$45.48	$31.34 - $50.16
Q4 2019	5,618	$307	$43.82	$42.11 - $45.80
Q3 2019	5,618	$303	$42.08	$39.53 - $44.83
Q2 2019	5,618	$276	$38.79	$37.00 - $40.91
Q1 2019	7,228	$341	$36.14	$32.70 - $38.77
Q4 2018	7,228	$305	$35.19	$32.65 - $37.38
Q3 2018	7,228	$308	$34.13	$32.72 - $35.18
Q2 2018	7,597	$322	$32.46	$30.20 - $34.35
Q1 2018	7,228	$295	$30.84	$28.88 - $33.21
Q4 2017	7,228	$308	$33.80	$31.68 - $35.41
Q3 2017	7,228	$300	$32.04	$30.14 - $33.72
Q2 2017	8,728	$351	$30.93	$29.83 - $32.31
Q1 2017	8,728	$346	$29.08	$27.58 - $30.63
Q4 2016	8,728	$331	$27.74	$26.27 - $29.13
Q3 2016	8,728	$334	$29.26	$27.72 - $30.41
Q2 2016	8,728	$347	$27.46	$25.25 - $29.85
Q1 2016	4,364	$324	$24.74	$22.13 - $27.34
Q4 2015	4,364	$273	$21.84	$20.45 - $23.41
Q3 2015	4,364	$255	$21.20	$19.59 - $22.72
Q2 2015	4,364	$252	$21.63	$20.41 - $22.74
Q1 2015	4,364	$275	$23.04	$21.25 - $25.01
Q4 2014	4,497	$299	$21.73	$19.32 - $24.55
Q3 2014	4,497	$249	$20.07	$19.08 - $21.06
Q2 2014	4,564	$278	$19.98	$19.02 - $21.06
Q1 2014	4,564	$259	$18.07	$16.97 - $19.54
Q4 2013	3,955	$204	$17.48	$16.43 - $18.23