ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

National Pension Service's Holding History (CIK: 0001608046)

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

Q4 2025

Shares 10,284 Value ($000) $669 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 6,836 Value ($000) $461 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 4,126 Value ($000) $249 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 937 Value ($000) $60 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 380,984 Value ($000) $22,531 Avg Close $58.37 Range $54.30 - $62.16

Q4 2023

Shares 403,011 Value ($000) $20,674 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 403,011 Value ($000) $19,852 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 387,128 Value ($000) $20,049 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 379,236 Value ($000) $20,065 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 382,902 Value ($000) $21,140 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 371,126 Value ($000) $20,241 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 372,352 Value ($000) $21,824 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 371,883 Value ($000) $23,235 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 3,209 Value ($000) $197 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 3,209 Value ($000) $180 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 165 Value ($000) $9 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 144 Value ($000) $8 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 437,133 Value ($000) $22,525 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 410,945 Value ($000) $21,160 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 410,945 Value ($000) $19,660 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 369,105 Value ($000) $17,809 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 369,105 Value ($000) $20,205 Avg Close $43.82 Range $42.11 - $45.80

Q1 2017

Shares 679 Value ($000) $27 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 679 Value ($000) $26 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 232 Value ($000) $9 Avg Close $29.26 Range $27.72 - $30.41

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	10,284	$669	$66.83	$64.30 - $69.59
Q3 2025	6,836	$461	$63.88	$59.07 - $67.04
Q2 2025	4,126	$249	$60.10	$55.76 - $64.19
Q1 2025	937	$60	$59.57	$54.52 - $64.99
Q4 2024	380,984	$22,531	$58.37	$54.30 - $62.16
Q4 2023	403,011	$20,674	$46.45	$41.77 - $50.29
Q3 2023	403,011	$19,852	$47.84	$44.23 - $51.62
Q2 2023	387,128	$20,049	$49.05	$46.13 - $51.23
Q1 2023	379,236	$20,065	$48.28	$45.19 - $50.77
Q4 2022	382,902	$21,140	$48.07	$42.22 - $51.90
Q3 2022	371,126	$20,241	$53.87	$47.25 - $57.82
Q2 2022	372,352	$21,824	$53.50	$48.14 - $57.66
Q1 2022	371,883	$23,235	$52.37	$48.33 - $55.78
Q4 2021	3,209	$197	$50.05	$47.35 - $54.07
Q3 2021	3,209	$180	$51.28	$47.64 - $54.21
Q2 2021	165	$9	$48.83	$45.94 - $51.03
Q1 2021	144	$8	$42.55	$39.42 - $47.06
Q4 2020	437,133	$22,525	$45.61	$40.48 - $49.39
Q3 2020	410,945	$21,160	$44.02	$39.84 - $46.94
Q2 2020	410,945	$19,660	$40.72	$36.29 - $45.31
Q1 2020	369,105	$17,809	$45.48	$31.34 - $50.16
Q4 2019	369,105	$20,205	$43.82	$42.11 - $45.80
Q1 2017	679	$27	$29.08	$27.58 - $30.63
Q4 2016	679	$26	$27.74	$26.27 - $29.13
Q3 2016	232	$9	$29.26	$27.72 - $30.41