ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

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

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

Q4 2025

Shares 199,794 Value ($000) $12,989 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 197,576 Value ($000) $13,319 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 197,193 Value ($000) $11,924 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 196,942 Value ($000) $12,673 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 200,545 Value ($000) $11,860 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 203,170 Value ($000) $12,330 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 201,764 Value ($000) $10,270 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 198,148 Value ($000) $9,987 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 202,067 Value ($000) $10,366 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 201,690 Value ($000) $9,772 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 211,465 Value ($000) $11,098 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 209,621 Value ($000) $11 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 207,412 Value ($000) $11 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 219,786 Value ($000) $11,646 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 229,257 Value ($000) $13,437 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 228,457 Value ($000) $14,274 Avg Close $52.37 Range $48.33 - $55.78

Q3 2021

Shares 227,230 Value ($000) $12,720 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 228,730 Value ($000) $12,754 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 245,530 Value ($000) $13,298 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 252,330 Value ($000) $13,003 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 252,140 Value ($000) $13,023 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 253,640 Value ($000) $12,134 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 263,540 Value ($000) $12,726 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 257,940 Value ($000) $14,114 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 288,440 Value ($000) $15,556 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 296,740 Value ($000) $14,564 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 287,440 Value ($000) $13,547 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 285,940 Value ($000) $12,081 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 283,940 Value ($000) $12,087 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 287,390 Value ($000) $12,162 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 283,550 Value ($000) $11,472 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 291,850 Value ($000) $12,436 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 286,000 Value ($000) $11,889 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 289,050 Value ($000) $11,684 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 289,650 Value ($000) $11,473 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 291,350 Value ($000) $11,039 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 294,020 Value ($000) $11,264 Avg Close $29.26 Range $27.72 - $30.41

Q2 2016

Shares 287,120 Value ($000) $11,399 Avg Close $27.46 Range $25.25 - $29.85

Q1 2016

Shares 141,310 Value ($000) $10,497 Avg Close $24.74 Range $22.13 - $27.34

Q4 2015

Shares 146,310 Value ($000) $9,137 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 162,610 Value ($000) $9,496 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 146,110 Value ($000) $8,433 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 140,710 Value ($000) $8,865 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 137,810 Value ($000) $9,153 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 122,110 Value ($000) $6,766 Avg Close $20.07 Range $19.08 - $21.06

Q2 2014

Shares 128,660 Value ($000) $7,830 Avg Close $19.98 Range $19.02 - $21.06

Q1 2014

Shares 106,660 Value ($000) $6,059 Avg Close $18.07 Range $16.97 - $19.54

Q4 2013

Shares 103,610 Value ($000) $5,346 Avg Close $17.48 Range $16.43 - $18.23

Q3 2013

Shares 109,710 Value ($000) $5,436 Avg Close $17.15 Range $16.21 - $18.15

Q2 2013

Shares 105,510 Value ($000) $5,320 Avg Close $16.89 Range $15.60 - $17.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	199,794	$12,989	$66.83	$64.30 - $69.59
Q3 2025	197,576	$13,319	$63.88	$59.07 - $67.04
Q2 2025	197,193	$11,924	$60.10	$55.76 - $64.19
Q1 2025	196,942	$12,673	$59.57	$54.52 - $64.99
Q4 2024	200,545	$11,860	$58.37	$54.30 - $62.16
Q3 2024	203,170	$12,330	$54.38	$48.12 - $58.63
Q2 2024	201,764	$10,270	$47.71	$44.54 - $49.81
Q1 2024	198,148	$9,987	$46.11	$44.14 - $48.90
Q4 2023	202,067	$10,366	$46.45	$41.77 - $50.29
Q3 2023	201,690	$9,772	$47.84	$44.23 - $51.62
Q2 2023	211,465	$11,098	$49.05	$46.13 - $51.23
Q1 2023	209,621	$11	$48.28	$45.19 - $50.77
Q4 2022	207,412	$11	$48.07	$42.22 - $51.90
Q3 2022	219,786	$11,646	$53.87	$47.25 - $57.82
Q2 2022	229,257	$13,437	$53.50	$48.14 - $57.66
Q1 2022	228,457	$14,274	$52.37	$48.33 - $55.78
Q3 2021	227,230	$12,720	$51.28	$47.64 - $54.21
Q2 2021	228,730	$12,754	$48.83	$45.94 - $51.03
Q1 2021	245,530	$13,298	$42.55	$39.42 - $47.06
Q4 2020	252,330	$13,003	$45.61	$40.48 - $49.39
Q3 2020	252,140	$13,023	$44.02	$39.84 - $46.94
Q2 2020	253,640	$12,134	$40.72	$36.29 - $45.31
Q1 2020	263,540	$12,726	$45.48	$31.34 - $50.16
Q4 2019	257,940	$14,114	$43.82	$42.11 - $45.80
Q3 2019	288,440	$15,556	$42.08	$39.53 - $44.83
Q2 2019	296,740	$14,564	$38.79	$37.00 - $40.91
Q1 2019	287,440	$13,547	$36.14	$32.70 - $38.77
Q4 2018	285,940	$12,081	$35.19	$32.65 - $37.38
Q3 2018	283,940	$12,087	$34.13	$32.72 - $35.18
Q2 2018	287,390	$12,162	$32.46	$30.20 - $34.35
Q1 2018	283,550	$11,472	$30.84	$28.88 - $33.21
Q4 2017	291,850	$12,436	$33.80	$31.68 - $35.41
Q3 2017	286,000	$11,889	$32.04	$30.14 - $33.72
Q2 2017	289,050	$11,684	$30.93	$29.83 - $32.31
Q1 2017	289,650	$11,473	$29.08	$27.58 - $30.63
Q4 2016	291,350	$11,039	$27.74	$26.27 - $29.13
Q3 2016	294,020	$11,264	$29.26	$27.72 - $30.41
Q2 2016	287,120	$11,399	$27.46	$25.25 - $29.85
Q1 2016	141,310	$10,497	$24.74	$22.13 - $27.34
Q4 2015	146,310	$9,137	$21.84	$20.45 - $23.41
Q3 2015	162,610	$9,496	$21.20	$19.59 - $22.72
Q2 2015	146,110	$8,433	$21.63	$20.41 - $22.74
Q1 2015	140,710	$8,865	$23.04	$21.25 - $25.01
Q4 2014	137,810	$9,153	$21.73	$19.32 - $24.55
Q3 2014	122,110	$6,766	$20.07	$19.08 - $21.06
Q2 2014	128,660	$7,830	$19.98	$19.02 - $21.06
Q1 2014	106,660	$6,059	$18.07	$16.97 - $19.54
Q4 2013	103,610	$5,346	$17.48	$16.43 - $18.23
Q3 2013	109,710	$5,436	$17.15	$16.21 - $18.15
Q2 2013	105,510	$5,320	$16.89	$15.60 - $17.85