ALLIANT ENERGY CORP reports

Company location: Madison, WI
Fiscal year end: 31 December

ALLIANT ENERGY CORP has filed 3,120 SEC EDGAR filings since 07 Feb 1994

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SEC filing history

Showing 101-125 of 1,000 matching filings.

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25

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5

4

FORM 4

Filing date: 15 Apr 2025
Reporting date: 11 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 15 Apr 2025
Reporting date: 11 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

ARS File 001-09894

ARS

Filing date: 01 Apr 2025
Reporting date: 31 Dec 2024
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-09894

DEFA14A

Filing date: 01 Apr 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-09894

DEF 14A

Filing date: 01 Apr 2025
Reporting date: 16 May 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

3

FORM 3

Filing date: 12 Mar 2025
Reporting date: 02 Mar 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-09894

8-K

Filing date: 10 Mar 2025
Reporting date: 07 Mar 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-09894

8-K

Filing date: 03 Mar 2025
Reporting date: 03 Mar 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

FORM 4

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 24 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K File 001-09894

10-K

Filing date: 21 Feb 2025
Reporting date: 31 Dec 2024
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-09894

8-K

Filing date: 21 Feb 2025
Reporting date: 20 Feb 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-09894

8-K

Filing date: 11 Feb 2025
Reporting date: 07 Feb 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

FORM 4

Filing date: 14 Jan 2025
Reporting date: 10 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 14 Jan 2025
Reporting date: 10 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 14 Jan 2025
Reporting date: 10 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 14 Jan 2025
Reporting date: 10 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 14 Jan 2025
Reporting date: 10 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 14 Jan 2025
Reporting date: 10 Jan 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-09894

8-K

Filing date: 18 Dec 2024
Reporting date: 18 Dec 2024
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

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