ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

Retirement Systems of Alabama's Holding History (CIK: 0001593051)

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

Q4 2025

Shares 438,819 Value ($000) $28,528 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 438,950 Value ($000) $29,590 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 439,255 Value ($000) $26,562 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 446,001 Value ($000) $28,700 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 450,823 Value ($000) $26,662 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 451,477 Value ($000) $27,400 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 56,557 Value ($000) $2,879 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 56,321 Value ($000) $2,839 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 56,238 Value ($000) $2,885 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 57,142 Value ($000) $2,769 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 57,134 Value ($000) $2,998 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 74,194 Value ($000) $3,962 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 80,418 Value ($000) $4,440 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 83,346 Value ($000) $4,417 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 83,150 Value ($000) $4,873 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 82,953 Value ($000) $5,183 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 82,957 Value ($000) $5,099 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 85,941 Value ($000) $4,811 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 91,499 Value ($000) $5,102 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 93,201 Value ($000) $5,048 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 100,299 Value ($000) $5,168 Avg Close $45.61 Range $40.48 - $49.39

Q3 2020

Shares 100,618 Value ($000) $5,197 Avg Close $44.02 Range $39.84 - $46.94

Q2 2020

Shares 106,681 Value ($000) $5,104 Avg Close $40.72 Range $36.29 - $45.31

Q1 2020

Shares 105,658 Value ($000) $5,102 Avg Close $45.48 Range $31.34 - $50.16

Q4 2019

Shares 105,633 Value ($000) $5,780 Avg Close $43.82 Range $42.11 - $45.80

Q3 2019

Shares 104,013 Value ($000) $5,609 Avg Close $42.08 Range $39.53 - $44.83

Q2 2019

Shares 110,199 Value ($000) $5,409 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 109,925 Value ($000) $5,181 Avg Close $36.14 Range $32.70 - $38.77

Q4 2018

Shares 107,807 Value ($000) $4,555 Avg Close $35.19 Range $32.65 - $37.38

Q3 2018

Shares 107,807 Value ($000) $4,589 Avg Close $34.13 Range $32.72 - $35.18

Q2 2018

Shares 108,518 Value ($000) $4,592 Avg Close $32.46 Range $30.20 - $34.35

Q1 2018

Shares 110,522 Value ($000) $4,516 Avg Close $30.84 Range $28.88 - $33.21

Q4 2017

Shares 112,046 Value ($000) $4,774 Avg Close $33.80 Range $31.68 - $35.41

Q3 2017

Shares 112,100 Value ($000) $4,660 Avg Close $32.04 Range $30.14 - $33.72

Q2 2017

Shares 110,462 Value ($000) $4,437 Avg Close $30.93 Range $29.83 - $32.31

Q1 2017

Shares 110,059 Value ($000) $4,359 Avg Close $29.08 Range $27.58 - $30.63

Q4 2016

Shares 108,822 Value ($000) $4,123 Avg Close $27.74 Range $26.27 - $29.13

Q3 2016

Shares 371,608 Value ($000) $14,236 Avg Close $29.26 Range $27.72 - $30.41

Q2 2016

Shares 503,300 Value ($000) $19,981 Avg Close $27.46 Range $25.25 - $29.85

Q1 2016

Shares 339,744 Value ($000) $25,236 Avg Close $24.74 Range $22.13 - $27.34

Q4 2015

Shares 339,096 Value ($000) $21,177 Avg Close $21.84 Range $20.45 - $23.41

Q3 2015

Shares 337,075 Value ($000) $19,716 Avg Close $21.20 Range $19.59 - $22.72

Q2 2015

Shares 143,396 Value ($000) $8,277 Avg Close $21.63 Range $20.41 - $22.74

Q1 2015

Shares 140,787 Value ($000) $8,870 Avg Close $23.04 Range $21.25 - $25.01

Q4 2014

Shares 138,922 Value ($000) $9,227 Avg Close $21.73 Range $19.32 - $24.55

Q3 2014

Shares 138,922 Value ($000) $7,698 Avg Close $20.07 Range $19.08 - $21.06

Q2 2014

Shares 137,378 Value ($000) $8,361 Avg Close $19.98 Range $19.02 - $21.06

Q1 2014

Shares 138,256 Value ($000) $7,854 Avg Close $18.07 Range $16.97 - $19.54

Q4 2013

Shares 136,013 Value ($000) $7,018 Avg Close $17.48 Range $16.43 - $18.23

Q3 2013

Shares 136,013 Value ($000) $6,739 Avg Close $17.15 Range $16.21 - $18.15

Q2 2013

Shares 135,303 Value ($000) $6,822 Avg Close $16.89 Range $15.60 - $17.85

Q1 2013

Shares 135,603 Value ($000) $6,805 Avg Close $15.50 Range $14.30 - $16.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	438,819	$28,528	$66.83	$64.30 - $69.59
Q3 2025	438,950	$29,590	$63.88	$59.07 - $67.04
Q2 2025	439,255	$26,562	$60.10	$55.76 - $64.19
Q1 2025	446,001	$28,700	$59.57	$54.52 - $64.99
Q4 2024	450,823	$26,662	$58.37	$54.30 - $62.16
Q3 2024	451,477	$27,400	$54.38	$48.12 - $58.63
Q2 2024	56,557	$2,879	$47.71	$44.54 - $49.81
Q1 2024	56,321	$2,839	$46.11	$44.14 - $48.90
Q4 2023	56,238	$2,885	$46.45	$41.77 - $50.29
Q3 2023	57,142	$2,769	$47.84	$44.23 - $51.62
Q2 2023	57,134	$2,998	$49.05	$46.13 - $51.23
Q1 2023	74,194	$3,962	$48.28	$45.19 - $50.77
Q4 2022	80,418	$4,440	$48.07	$42.22 - $51.90
Q3 2022	83,346	$4,417	$53.87	$47.25 - $57.82
Q2 2022	83,150	$4,873	$53.50	$48.14 - $57.66
Q1 2022	82,953	$5,183	$52.37	$48.33 - $55.78
Q4 2021	82,957	$5,099	$50.05	$47.35 - $54.07
Q3 2021	85,941	$4,811	$51.28	$47.64 - $54.21
Q2 2021	91,499	$5,102	$48.83	$45.94 - $51.03
Q1 2021	93,201	$5,048	$42.55	$39.42 - $47.06
Q4 2020	100,299	$5,168	$45.61	$40.48 - $49.39
Q3 2020	100,618	$5,197	$44.02	$39.84 - $46.94
Q2 2020	106,681	$5,104	$40.72	$36.29 - $45.31
Q1 2020	105,658	$5,102	$45.48	$31.34 - $50.16
Q4 2019	105,633	$5,780	$43.82	$42.11 - $45.80
Q3 2019	104,013	$5,609	$42.08	$39.53 - $44.83
Q2 2019	110,199	$5,409	$38.79	$37.00 - $40.91
Q1 2019	109,925	$5,181	$36.14	$32.70 - $38.77
Q4 2018	107,807	$4,555	$35.19	$32.65 - $37.38
Q3 2018	107,807	$4,589	$34.13	$32.72 - $35.18
Q2 2018	108,518	$4,592	$32.46	$30.20 - $34.35
Q1 2018	110,522	$4,516	$30.84	$28.88 - $33.21
Q4 2017	112,046	$4,774	$33.80	$31.68 - $35.41
Q3 2017	112,100	$4,660	$32.04	$30.14 - $33.72
Q2 2017	110,462	$4,437	$30.93	$29.83 - $32.31
Q1 2017	110,059	$4,359	$29.08	$27.58 - $30.63
Q4 2016	108,822	$4,123	$27.74	$26.27 - $29.13
Q3 2016	371,608	$14,236	$29.26	$27.72 - $30.41
Q2 2016	503,300	$19,981	$27.46	$25.25 - $29.85
Q1 2016	339,744	$25,236	$24.74	$22.13 - $27.34
Q4 2015	339,096	$21,177	$21.84	$20.45 - $23.41
Q3 2015	337,075	$19,716	$21.20	$19.59 - $22.72
Q2 2015	143,396	$8,277	$21.63	$20.41 - $22.74
Q1 2015	140,787	$8,870	$23.04	$21.25 - $25.01
Q4 2014	138,922	$9,227	$21.73	$19.32 - $24.55
Q3 2014	138,922	$7,698	$20.07	$19.08 - $21.06
Q2 2014	137,378	$8,361	$19.98	$19.02 - $21.06
Q1 2014	138,256	$7,854	$18.07	$16.97 - $19.54
Q4 2013	136,013	$7,018	$17.48	$16.43 - $18.23
Q3 2013	136,013	$6,739	$17.15	$16.21 - $18.15
Q2 2013	135,303	$6,822	$16.89	$15.60 - $17.85
Q1 2013	135,603	$6,805	$15.50	$14.30 - $16.60