ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

WELCH & FORBES LLC's Holding History (CIK: 0000105495)

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

Q4 2025

Shares 50,264 Value ($000) $3,268 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 50,264 Value ($000) $3,388 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 50,264 Value ($000) $3,039 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 50,576 Value ($000) $3,255 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 50,264 Value ($000) $2,973 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 50,264 Value ($000) $3,051 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 50,264 Value ($000) $2,597 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 50,264 Value ($000) $2,533 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 50,264 Value ($000) $2,579 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 50,264 Value ($000) $2,435 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 50,899 Value ($000) $2,671 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 50,899 Value ($000) $2,718 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 50,899 Value ($000) $2,810 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 50,899 Value ($000) $2,697 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 50,899 Value ($000) $2,983 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 50,264 Value ($000) $3,140 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 50,264 Value ($000) $3,090 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 50,264 Value ($000) $2,814 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 50,664 Value ($000) $2,825 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 50,664 Value ($000) $2,744 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 50,664 Value ($000) $2,611 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 50,664 Value ($000) $2,617 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 53,164 Value ($000) $2,543 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 56,364 Value ($000) $2,722 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 56,364 Value ($000) $3,084 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 56,900 Value ($000) $3,069 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 56,900 Value ($000) $2,793 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 56,900 Value ($000) $2,682 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 56,900 Value ($000) $2,404 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 56,900 Value ($000) $2,422 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 60,700 Value ($000) $2,569 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 60,700 Value ($000) $2,480 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 60,700 Value ($000) $2,586 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 61,700 Value ($000) $2,565 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 61,700 Value ($000) $2,478 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 61,712 Value ($000) $2,444 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 61,700 Value ($000) $2,338 Avg Close $27.74 Range $26.27 - $29.13

Q2 2016

Shares 61,700 Value ($000) $2,449 Avg Close $27.46 Range $25.25 - $29.85

Q1 2016

Shares 30,850 Value ($000) $2,292 Avg Close $24.74 Range $22.13 - $27.34

Q4 2015

Shares 30,850 Value ($000) $1,927 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 31,450 Value ($000) $1,840 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 31,450 Value ($000) $1,815 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 31,450 Value ($000) $1,981 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 31,950 Value ($000) $2,122 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 32,750 Value ($000) $1,815 Avg Close $20.07 Range $19.08 - $21.06

Q1 2014

Shares 32,750 Value ($000) $1,861 Avg Close $18.07 Range $16.97 - $19.54

Q4 2013

Shares 32,750 Value ($000) $1,690 Avg Close $17.48 Range $16.43 - $18.23

Q3 2013

Shares 32,750 Value ($000) $1,623 Avg Close $17.15 Range $16.21 - $18.15

Q2 2013

Shares 32,750 Value ($000) $1,651 Avg Close $16.89 Range $15.60 - $17.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	50,264	$3,268	$66.83	$64.30 - $69.59
Q3 2025	50,264	$3,388	$63.88	$59.07 - $67.04
Q2 2025	50,264	$3,039	$60.10	$55.76 - $64.19
Q1 2025	50,576	$3,255	$59.57	$54.52 - $64.99
Q4 2024	50,264	$2,973	$58.37	$54.30 - $62.16
Q3 2024	50,264	$3,051	$54.38	$48.12 - $58.63
Q2 2024	50,264	$2,597	$47.71	$44.54 - $49.81
Q1 2024	50,264	$2,533	$46.11	$44.14 - $48.90
Q4 2023	50,264	$2,579	$46.45	$41.77 - $50.29
Q3 2023	50,264	$2,435	$47.84	$44.23 - $51.62
Q2 2023	50,899	$2,671	$49.05	$46.13 - $51.23
Q1 2023	50,899	$2,718	$48.28	$45.19 - $50.77
Q4 2022	50,899	$2,810	$48.07	$42.22 - $51.90
Q3 2022	50,899	$2,697	$53.87	$47.25 - $57.82
Q2 2022	50,899	$2,983	$53.50	$48.14 - $57.66
Q1 2022	50,264	$3,140	$52.37	$48.33 - $55.78
Q4 2021	50,264	$3,090	$50.05	$47.35 - $54.07
Q3 2021	50,264	$2,814	$51.28	$47.64 - $54.21
Q2 2021	50,664	$2,825	$48.83	$45.94 - $51.03
Q1 2021	50,664	$2,744	$42.55	$39.42 - $47.06
Q4 2020	50,664	$2,611	$45.61	$40.48 - $49.39
Q3 2020	50,664	$2,617	$44.02	$39.84 - $46.94
Q2 2020	53,164	$2,543	$40.72	$36.29 - $45.31
Q1 2020	56,364	$2,722	$45.48	$31.34 - $50.16
Q4 2019	56,364	$3,084	$43.82	$42.11 - $45.80
Q3 2019	56,900	$3,069	$42.08	$39.53 - $44.83
Q2 2019	56,900	$2,793	$38.79	$37.00 - $40.91
Q1 2019	56,900	$2,682	$36.14	$32.70 - $38.77
Q4 2018	56,900	$2,404	$35.19	$32.65 - $37.38
Q3 2018	56,900	$2,422	$34.13	$32.72 - $35.18
Q2 2018	60,700	$2,569	$32.46	$30.20 - $34.35
Q1 2018	60,700	$2,480	$30.84	$28.88 - $33.21
Q4 2017	60,700	$2,586	$33.80	$31.68 - $35.41
Q3 2017	61,700	$2,565	$32.04	$30.14 - $33.72
Q2 2017	61,700	$2,478	$30.93	$29.83 - $32.31
Q1 2017	61,712	$2,444	$29.08	$27.58 - $30.63
Q4 2016	61,700	$2,338	$27.74	$26.27 - $29.13
Q2 2016	61,700	$2,449	$27.46	$25.25 - $29.85
Q1 2016	30,850	$2,292	$24.74	$22.13 - $27.34
Q4 2015	30,850	$1,927	$21.84	$20.45 - $23.41
Q3 2015	31,450	$1,840	$21.20	$19.59 - $22.72
Q2 2015	31,450	$1,815	$21.63	$20.41 - $22.74
Q1 2015	31,450	$1,981	$23.04	$21.25 - $25.01
Q4 2014	31,950	$2,122	$21.73	$19.32 - $24.55
Q3 2014	32,750	$1,815	$20.07	$19.08 - $21.06
Q1 2014	32,750	$1,861	$18.07	$16.97 - $19.54
Q4 2013	32,750	$1,690	$17.48	$16.43 - $18.23
Q3 2013	32,750	$1,623	$17.15	$16.21 - $18.15
Q2 2013	32,750	$1,651	$16.89	$15.60 - $17.85