ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

Mariner, LLC's Holding History (CIK: 0001373442)

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

Q4 2025

Shares 20,242 Value ($000) $1,315 Avg Close $66.83 Range $64.30 - $69.59

Q3 2025

Shares 44,229 Value ($000) $2,981 Avg Close $63.88 Range $59.07 - $67.04

Q2 2025

Shares 51,546 Value ($000) $3,117 Avg Close $60.10 Range $55.76 - $64.19

Q1 2025

Shares 43,672 Value ($000) $2,810 Avg Close $59.57 Range $54.52 - $64.99

Q4 2024

Shares 45,403 Value ($000) $2,685 Avg Close $58.37 Range $54.30 - $62.16

Q3 2024

Shares 43,238 Value ($000) $2,624 Avg Close $54.38 Range $48.12 - $58.63

Q2 2024

Shares 43,656 Value ($000) $2,222 Avg Close $47.71 Range $44.54 - $49.81

Q1 2024

Shares 35,057 Value ($000) $1,767 Avg Close $46.11 Range $44.14 - $48.90

Q4 2023

Shares 37,491 Value ($000) $1,923 Avg Close $46.45 Range $41.77 - $50.29

Q3 2023

Shares 42,105 Value ($000) $2,040 Avg Close $47.84 Range $44.23 - $51.62

Q2 2023

Shares 35,055 Value ($000) $1,840 Avg Close $49.05 Range $46.13 - $51.23

Q1 2023

Shares 40,748 Value ($000) $2 Avg Close $48.28 Range $45.19 - $50.77

Q4 2022

Shares 33,474 Value ($000) $2 Avg Close $48.07 Range $42.22 - $51.90

Q3 2022

Shares 34,322 Value ($000) $1,819 Avg Close $53.87 Range $47.25 - $57.82

Q2 2022

Shares 31,279 Value ($000) $1,833 Avg Close $53.50 Range $48.14 - $57.66

Q1 2022

Shares 29,631 Value ($000) $1,851 Avg Close $52.37 Range $48.33 - $55.78

Q4 2021

Shares 24,751 Value ($000) $1,521 Avg Close $50.05 Range $47.35 - $54.07

Q3 2021

Shares 22,371 Value ($000) $1,252 Avg Close $51.28 Range $47.64 - $54.21

Q2 2021

Shares 20,581 Value ($000) $1,148 Avg Close $48.83 Range $45.94 - $51.03

Q1 2021

Shares 14,660 Value ($000) $794 Avg Close $42.55 Range $39.42 - $47.06

Q4 2020

Shares 12,527 Value ($000) $646 Avg Close $45.61 Range $40.48 - $49.39

Q2 2019

Shares 17,294 Value ($000) $849 Avg Close $38.79 Range $37.00 - $40.91

Q1 2019

Shares 18,107 Value ($000) $853 Avg Close $36.14 Range $32.70 - $38.77

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	20,242	$1,315	$66.83	$64.30 - $69.59
Q3 2025	44,229	$2,981	$63.88	$59.07 - $67.04
Q2 2025	51,546	$3,117	$60.10	$55.76 - $64.19
Q1 2025	43,672	$2,810	$59.57	$54.52 - $64.99
Q4 2024	45,403	$2,685	$58.37	$54.30 - $62.16
Q3 2024	43,238	$2,624	$54.38	$48.12 - $58.63
Q2 2024	43,656	$2,222	$47.71	$44.54 - $49.81
Q1 2024	35,057	$1,767	$46.11	$44.14 - $48.90
Q4 2023	37,491	$1,923	$46.45	$41.77 - $50.29
Q3 2023	42,105	$2,040	$47.84	$44.23 - $51.62
Q2 2023	35,055	$1,840	$49.05	$46.13 - $51.23
Q1 2023	40,748	$2	$48.28	$45.19 - $50.77
Q4 2022	33,474	$2	$48.07	$42.22 - $51.90
Q3 2022	34,322	$1,819	$53.87	$47.25 - $57.82
Q2 2022	31,279	$1,833	$53.50	$48.14 - $57.66
Q1 2022	29,631	$1,851	$52.37	$48.33 - $55.78
Q4 2021	24,751	$1,521	$50.05	$47.35 - $54.07
Q3 2021	22,371	$1,252	$51.28	$47.64 - $54.21
Q2 2021	20,581	$1,148	$48.83	$45.94 - $51.03
Q1 2021	14,660	$794	$42.55	$39.42 - $47.06
Q4 2020	12,527	$646	$45.61	$40.48 - $49.39
Q2 2019	17,294	$849	$38.79	$37.00 - $40.91
Q1 2019	18,107	$853	$36.14	$32.70 - $38.77