ALLIANT ENERGY CORP

Ticker: LNT CUSIP: 018802108 Class: COM

BROWN BROTHERS HARRIMAN & CO's Holding History (CIK: 0000014661)

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

Q4 2025
Shares 2,187 Value ($000) $142 Avg Close $66.83 Range $64.30 - $69.59
Q3 2025
Shares 850 Value ($000) $57 Avg Close $63.88 Range $59.07 - $67.04
Q2 2025
Shares 537 Value ($000) $32 Avg Close $60.10 Range $55.76 - $64.19
Q1 2025
Shares 320 Value ($000) $21 Avg Close $59.57 Range $54.52 - $64.99
Q4 2024
Shares 276 Value ($000) $16 Avg Close $58.37 Range $54.30 - $62.16
Q3 2024
Shares 218 Value ($000) $13 Avg Close $54.38 Range $48.12 - $58.63
Q2 2024
Shares 97 Value ($000) $5 Avg Close $47.71 Range $44.54 - $49.81
Q1 2024
Shares 97 Value ($000) $5 Avg Close $46.11 Range $44.14 - $48.90
Q4 2023
Shares 131 Value ($000) $7 Avg Close $46.45 Range $41.77 - $50.29
Q3 2023
Shares 115 Value ($000) $6 Avg Close $47.84 Range $44.23 - $51.62
Q2 2023
Shares 128 Value ($000) $7 Avg Close $49.05 Range $46.13 - $51.23
Q1 2023
Shares 128 Value ($000) $7 Avg Close $48.28 Range $45.19 - $50.77
Q4 2022
Shares 31 Value ($000) $2 Avg Close $48.07 Range $42.22 - $51.90
Q3 2022
Shares 455 Value ($000) $24 Avg Close $53.87 Range $47.25 - $57.82
Q2 2022
Shares 18 Value ($000) $1 Avg Close $53.50 Range $48.14 - $57.66
Q1 2022
Shares 21 Value ($000) $1 Avg Close $52.37 Range $48.33 - $55.78
Q4 2021
Shares 33 Value ($000) $2 Avg Close $50.05 Range $47.35 - $54.07
Q3 2021
Shares 78 Value ($000) $4 Avg Close $51.28 Range $47.64 - $54.21
Q2 2021
Shares 78 Value ($000) $4 Avg Close $48.83 Range $45.94 - $51.03
Q1 2021
Shares 12 Value ($000) $1 Avg Close $42.55 Range $39.42 - $47.06
Q4 2020
Shares 17 Value ($000) $1 Avg Close $45.61 Range $40.48 - $49.39
Q3 2019
Shares 6 Value ($000) $0 Avg Close $42.08 Range $39.53 - $44.83
Q2 2019
Shares 6 Value ($000) $0 Avg Close $38.79 Range $37.00 - $40.91
Q1 2018
Shares 1,000 Value ($000) $41 Avg Close $30.84 Range $28.88 - $33.21
Q4 2017
Shares 1,000 Value ($000) $43 Avg Close $33.80 Range $31.68 - $35.41