ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

GRACE & WHITE INC /NY's Holding History (CIK: 0000903064)

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

Q4 2025

Shares 37,262 Value ($000) $2,422 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 52,262 Value ($000) $3,523 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 60,401 Value ($000) $3,652 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 61,725 Value ($000) $3,972 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 68,350 Value ($000) $4,042 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 68,350 Value ($000) $4,148 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 68,350 Value ($000) $3,479 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 68,350 Value ($000) $3,445 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 65,998 Value ($000) $3,386 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 66,993 Value ($000) $3,246 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 69,013 Value ($000) $3,622 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 69,013 Value ($000) $3,685 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 69,013 Value ($000) $3,810 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 72,345 Value ($000) $3,834 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 72,345 Value ($000) $4,241 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 77,673 Value ($000) $4,853 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 88,333 Value ($000) $5,430 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 96,033 Value ($000) $5,376 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 101,633 Value ($000) $5,667 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 102,133 Value ($000) $5,531 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 102,133 Value ($000) $5,263 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 103,108 Value ($000) $5,325 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 103,708 Value ($000) $4,961 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 103,708 Value ($000) $5,009 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 84,034 Value ($000) $4,598 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 84,034 Value ($000) $4,532 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 84,034 Value ($000) $4,124 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 84,034 Value ($000) $3,961 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 84,034 Value ($000) $3,550 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 92,634 Value ($000) $3,943 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 92,634 Value ($000) $3,920 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 130,840 Value ($000) $5,346 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 131,640 Value ($000) $5,609 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 152,240 Value ($000) $6,329 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 168,574 Value ($000) $6,772 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 179,374 Value ($000) $7,105 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 188,364 Value ($000) $7,137 Avg Close $27.74 Range $26.27 - $29.13

Q1 2016

Shares 115,775 Value ($000) $8,600 Avg Close $24.74 Range $22.13 - $27.34

Q4 2015

Shares 144,019 Value ($000) $8,994 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 156,519 Value ($000) $9,155 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 176,619 Value ($000) $10,194 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 176,219 Value ($000) $11,102 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 192,348 Value ($000) $12,775 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 225,664 Value ($000) $12,504 Avg Close $20.07 Range $19.08 - $21.06

Q2 2014

Shares 225,664 Value ($000) $13,734 Avg Close $19.98 Range $19.02 - $21.06

Q1 2014

Shares 228,938 Value ($000) $13,006 Avg Close $18.07 Range $16.97 - $19.54

Q4 2013

Shares 233,993 Value ($000) $12,074 Avg Close $17.48 Range $16.43 - $18.23

Q3 2013

Shares 234,293 Value ($000) $11,609 Avg Close $17.15 Range $16.21 - $18.15

Q2 2013

Shares 241,593 Value ($000) $12,181 Avg Close $16.89 Range $15.60 - $17.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	37,262	$2,422	$66.83	$64.30 - $69.59
Q3 2025	52,262	$3,523	$63.88	$59.07 - $67.04
Q2 2025	60,401	$3,652	$60.10	$55.76 - $64.19
Q1 2025	61,725	$3,972	$59.57	$54.52 - $64.99
Q4 2024	68,350	$4,042	$58.37	$54.30 - $62.16
Q3 2024	68,350	$4,148	$54.38	$48.12 - $58.63
Q2 2024	68,350	$3,479	$47.71	$44.54 - $49.81
Q1 2024	68,350	$3,445	$46.11	$44.14 - $48.90
Q4 2023	65,998	$3,386	$46.45	$41.77 - $50.29
Q3 2023	66,993	$3,246	$47.84	$44.23 - $51.62
Q2 2023	69,013	$3,622	$49.05	$46.13 - $51.23
Q1 2023	69,013	$3,685	$48.28	$45.19 - $50.77
Q4 2022	69,013	$3,810	$48.07	$42.22 - $51.90
Q3 2022	72,345	$3,834	$53.87	$47.25 - $57.82
Q2 2022	72,345	$4,241	$53.50	$48.14 - $57.66
Q1 2022	77,673	$4,853	$52.37	$48.33 - $55.78
Q4 2021	88,333	$5,430	$50.05	$47.35 - $54.07
Q3 2021	96,033	$5,376	$51.28	$47.64 - $54.21
Q2 2021	101,633	$5,667	$48.83	$45.94 - $51.03
Q1 2021	102,133	$5,531	$42.55	$39.42 - $47.06
Q4 2020	102,133	$5,263	$45.61	$40.48 - $49.39
Q3 2020	103,108	$5,325	$44.02	$39.84 - $46.94
Q2 2020	103,708	$4,961	$40.72	$36.29 - $45.31
Q1 2020	103,708	$5,009	$45.48	$31.34 - $50.16
Q4 2019	84,034	$4,598	$43.82	$42.11 - $45.80
Q3 2019	84,034	$4,532	$42.08	$39.53 - $44.83
Q2 2019	84,034	$4,124	$38.79	$37.00 - $40.91
Q1 2019	84,034	$3,961	$36.14	$32.70 - $38.77
Q4 2018	84,034	$3,550	$35.19	$32.65 - $37.38
Q3 2018	92,634	$3,943	$34.13	$32.72 - $35.18
Q2 2018	92,634	$3,920	$32.46	$30.20 - $34.35
Q1 2018	130,840	$5,346	$30.84	$28.88 - $33.21
Q4 2017	131,640	$5,609	$33.80	$31.68 - $35.41
Q3 2017	152,240	$6,329	$32.04	$30.14 - $33.72
Q2 2017	168,574	$6,772	$30.93	$29.83 - $32.31
Q1 2017	179,374	$7,105	$29.08	$27.58 - $30.63
Q4 2016	188,364	$7,137	$27.74	$26.27 - $29.13
Q1 2016	115,775	$8,600	$24.74	$22.13 - $27.34
Q4 2015	144,019	$8,994	$21.84	$20.45 - $23.41
Q3 2015	156,519	$9,155	$21.20	$19.59 - $22.72
Q2 2015	176,619	$10,194	$21.63	$20.41 - $22.74
Q1 2015	176,219	$11,102	$23.04	$21.25 - $25.01
Q4 2014	192,348	$12,775	$21.73	$19.32 - $24.55
Q3 2014	225,664	$12,504	$20.07	$19.08 - $21.06
Q2 2014	225,664	$13,734	$19.98	$19.02 - $21.06
Q1 2014	228,938	$13,006	$18.07	$16.97 - $19.54
Q4 2013	233,993	$12,074	$17.48	$16.43 - $18.23
Q3 2013	234,293	$11,609	$17.15	$16.21 - $18.15
Q2 2013	241,593	$12,181	$16.89	$15.60 - $17.85