ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

CHATHAM CAPITAL GROUP, INC.'s Holding History (CIK: 0001108969)

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

Q4 2025

Shares 9,750 Value ($000) $634 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 10,850 Value ($000) $731 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 13,510 Value ($000) $817 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 13,510 Value ($000) $869 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 13,810 Value ($000) $817 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 13,810 Value ($000) $838 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 14,050 Value ($000) $715 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 15,350 Value ($000) $774 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 17,090 Value ($000) $877 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 17,390 Value ($000) $843 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 17,390 Value ($000) $913 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 17,440 Value ($000) $931 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 17,440 Value ($000) $963 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 17,440 Value ($000) $924 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 17,440 Value ($000) $1,022 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 17,440 Value ($000) $1,090 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 17,440 Value ($000) $1,072 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 18,240 Value ($000) $1,021 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 18,240 Value ($000) $1,017 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 18,240 Value ($000) $988 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 18,240 Value ($000) $940 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 18,240 Value ($000) $942 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 18,240 Value ($000) $873 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 18,240 Value ($000) $881 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 18,640 Value ($000) $1,020 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 18,640 Value ($000) $1,005 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 18,640 Value ($000) $915 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 18,640 Value ($000) $879 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 19,340 Value ($000) $817 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 19,640 Value ($000) $836 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 20,340 Value ($000) $861 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 20,840 Value ($000) $852 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 20,340 Value ($000) $867 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 20,340 Value ($000) $846 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 20,340 Value ($000) $817 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 20,740 Value ($000) $821 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 20,340 Value ($000) $771 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 20,340 Value ($000) $779 Avg Close $29.26 Range $27.72 - $30.41

Q2 2016

Shares 20,340 Value ($000) $807 Avg Close $27.46 Range $25.25 - $29.85

Q1 2016

Shares 10,170 Value ($000) $755 Avg Close $24.74 Range $22.13 - $27.34

Q4 2015

Shares 10,170 Value ($000) $635 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 10,320 Value ($000) $604 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 10,320 Value ($000) $596 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 10,770 Value ($000) $679 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 10,970 Value ($000) $729 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 10,970 Value ($000) $608 Avg Close $20.07 Range $19.08 - $21.06

Q2 2014

Shares 11,270 Value ($000) $686 Avg Close $19.98 Range $19.02 - $21.06

Q1 2014

Shares 11,270 Value ($000) $640 Avg Close $18.07 Range $16.97 - $19.54

Q4 2013

Shares 11,270 Value ($000) $582 Avg Close $17.48 Range $16.43 - $18.23

Q3 2013

Shares 11,270 Value ($000) $558 Avg Close $17.15 Range $16.21 - $18.15

Q2 2013

Shares 11,270 Value ($000) $568 Avg Close $16.89 Range $15.60 - $17.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	9,750	$634	$66.83	$64.30 - $69.59
Q3 2025	10,850	$731	$63.88	$59.07 - $67.04
Q2 2025	13,510	$817	$60.10	$55.76 - $64.19
Q1 2025	13,510	$869	$59.57	$54.52 - $64.99
Q4 2024	13,810	$817	$58.37	$54.30 - $62.16
Q3 2024	13,810	$838	$54.38	$48.12 - $58.63
Q2 2024	14,050	$715	$47.71	$44.54 - $49.81
Q1 2024	15,350	$774	$46.11	$44.14 - $48.90
Q4 2023	17,090	$877	$46.45	$41.77 - $50.29
Q3 2023	17,390	$843	$47.84	$44.23 - $51.62
Q2 2023	17,390	$913	$49.05	$46.13 - $51.23
Q1 2023	17,440	$931	$48.28	$45.19 - $50.77
Q4 2022	17,440	$963	$48.07	$42.22 - $51.90
Q3 2022	17,440	$924	$53.87	$47.25 - $57.82
Q2 2022	17,440	$1,022	$53.50	$48.14 - $57.66
Q1 2022	17,440	$1,090	$52.37	$48.33 - $55.78
Q4 2021	17,440	$1,072	$50.05	$47.35 - $54.07
Q3 2021	18,240	$1,021	$51.28	$47.64 - $54.21
Q2 2021	18,240	$1,017	$48.83	$45.94 - $51.03
Q1 2021	18,240	$988	$42.55	$39.42 - $47.06
Q4 2020	18,240	$940	$45.61	$40.48 - $49.39
Q3 2020	18,240	$942	$44.02	$39.84 - $46.94
Q2 2020	18,240	$873	$40.72	$36.29 - $45.31
Q1 2020	18,240	$881	$45.48	$31.34 - $50.16
Q4 2019	18,640	$1,020	$43.82	$42.11 - $45.80
Q3 2019	18,640	$1,005	$42.08	$39.53 - $44.83
Q2 2019	18,640	$915	$38.79	$37.00 - $40.91
Q1 2019	18,640	$879	$36.14	$32.70 - $38.77
Q4 2018	19,340	$817	$35.19	$32.65 - $37.38
Q3 2018	19,640	$836	$34.13	$32.72 - $35.18
Q2 2018	20,340	$861	$32.46	$30.20 - $34.35
Q1 2018	20,840	$852	$30.84	$28.88 - $33.21
Q4 2017	20,340	$867	$33.80	$31.68 - $35.41
Q3 2017	20,340	$846	$32.04	$30.14 - $33.72
Q2 2017	20,340	$817	$30.93	$29.83 - $32.31
Q1 2017	20,740	$821	$29.08	$27.58 - $30.63
Q4 2016	20,340	$771	$27.74	$26.27 - $29.13
Q3 2016	20,340	$779	$29.26	$27.72 - $30.41
Q2 2016	20,340	$807	$27.46	$25.25 - $29.85
Q1 2016	10,170	$755	$24.74	$22.13 - $27.34
Q4 2015	10,170	$635	$21.84	$20.45 - $23.41
Q3 2015	10,320	$604	$21.20	$19.59 - $22.72
Q2 2015	10,320	$596	$21.63	$20.41 - $22.74
Q1 2015	10,770	$679	$23.04	$21.25 - $25.01
Q4 2014	10,970	$729	$21.73	$19.32 - $24.55
Q3 2014	10,970	$608	$20.07	$19.08 - $21.06
Q2 2014	11,270	$686	$19.98	$19.02 - $21.06
Q1 2014	11,270	$640	$18.07	$16.97 - $19.54
Q4 2013	11,270	$582	$17.48	$16.43 - $18.23
Q3 2013	11,270	$558	$17.15	$16.21 - $18.15
Q2 2013	11,270	$568	$16.89	$15.60 - $17.85