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| Keyboard |
| Alliant Energy Corp | |
|---|---|
| Ticker | LNT |
| CIK # | 0000352541 |
| CUSIP | 018802108 |
| Sector | Energy & Transportation - Electric & Other Services Combined |
| Address | 4902 North Biltmore Lane Suite 1000, Madison, WI 53718-2148 |
| Source | [EDGAR] |
| CIK | Filing | 2011 - 2026 |
|---|---|---|
| [0000352541] | 10-K | |
| [0000352541] | 10-Q | |
| [0000352541] | 3 | |
| [0000352541] | 4 | |
| [0000352541] | 8-K | |
| [0000352541] | SC 13G |
| Form 13D/13G Filer | Form 13D/13G Subject | Filed | % Owned |
|---|---|---|---|
| Vanguard Capital Management LLC | Alliant Energy Corp | [2026-04-29] | 0.0 |
| Vanguard Portfolio Management LLC | Alliant Energy Corp | [2026-04-28] | 0.0 |
| State Street Corp | Alliant Energy Corp | [2021-02-05] | 5.02 |
| State Street Corp | Alliant Energy Corp | [2020-02-13] | 5.36 |
| State Street Corp | Alliant Energy Corp | [2018-02-13] | 5.09 |
| State Street Corp | Alliant Energy Corp | [2017-02-09] | 5.3 |
| Vanguard Group Inc | Alliant Energy Corp | [2014-02-10] | 5.63 |
| Insider Transaction (Form 3/4/5) | Date | Action | Shares | Price | Value ($) |
|---|---|---|---|---|---|
|
Smyth Antonio P
Common Stock
|
2026-02-19 | Tax withheld | 6,226 | $70.01 | 435,882 |
|
Syse Dylan
Common Stock
|
2026-02-19 | Grant | 750 | $0.00 | |
|
Valcq Rebecca C
Common Stock
|
2026-02-19 | Grant | 1,004 | $0.00 | |
|
Farlinger Mayuri
Common Stock
|
2026-02-19 | Grant | 3,026 | $0.00 | |
|
de Leon David A
Common Stock
|
2026-02-19 | Grant | 2,306 | $0.00 | |
|
Sundararajan Raja
Common Stock .
|
2026-02-19 | Grant | 18,768 | $0.00 | |
|
Sundararajan Raja
Common Stock .
|
2026-02-19 | Grant | 8,784 | $0.00 | |
|
de Leon David A
Common Stock
|
2026-02-19 | Tax withheld | 5,207 | $70.01 | 364,542 |
|
Farlinger Mayuri
Common Stock
|
2026-02-19 | Grant | 1,098 | $0.00 | |
|
Smyth Antonio P
Common Stock
|
2026-02-19 | Grant | 5,240 | $0.00 | |
|
Syse Dylan
Common Stock
|
2026-02-19 | Grant | 1,063 | $0.00 | |
|
Common Stock
|
2026-02-19 | Tax withheld | 438 | $70.01 | 30,664 |
|
Barton Lisa M
Common Stock
|
2026-02-19 | Grant | 29,527 | $0.00 | |
|
Farlinger Mayuri
Common Stock
|
2026-02-19 | Tax withheld | 1,179 | $70.01 | 82,542 |
|
Syse Dylan
Common Stock
|
2026-02-19 | Tax withheld | 506 | $70.01 | 35,425 |
|
Barton Lisa M
Common Stock
|
2026-02-19 | Grant | 47,533 | $0.00 | |
|
Sundararajan Raja
Common Stock .
|
2026-02-19 | Tax withheld | 11,324 | $70.01 | 792,793 |
|
Barton Lisa M
Common Stock
|
2026-02-19 | Tax withheld | 28,594 | $70.01 | 2,001,866 |
|
Durian Robert J
Common Stock
|
2026-02-19 | Tax withheld | 16,630 | $70.01 | 1,164,266 |
|
Durian Robert J
Common Stock
|
2026-02-19 | Grant | 27,882 | $0.00 | |
| showing 20 of 200 most recent transactions | |||||
| 13F Ownership Over Time | Holders | Shares Held |
|---|---|---|
| 2026-03-31 | 856 | 222,287,091 |
| 2025-12-31 | 835 | 216,260,793 |
| 2025-09-30 | 792 | 217,410,870 |
| 2025-06-30 | 773 | 208,186,628 |
| 2025-03-31 | 778 | 199,991,331 |
| 2024-12-31 | 717 | 202,247,065 |
| 2024-09-30 | 679 | 200,189,407 |
| 2024-06-30 | 657 | 196,185,280 |
| 2024-03-31 | 632 | 202,264,306 |
| 2023-12-31 | 655 | 195,643,858 |
| 2023-09-30 | 613 | 190,030,702 |
| 2023-06-30 | 636 | 186,827,527 |