ALLIANT ENERGY CORP reports

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

ALLIANT ENERGY CORP has filed 3,107 SEC EDGAR filings since 07 Feb 1994

Filter by type:
10-K
10-Q
8-K
SC13D
SC13G

SEC filing history

Showing 76-100 of 1,000 matching filings.

Per page

25

Current page

4

8-K File 001-09894

8-K

Filing date: 15 May 2025
Reporting date: 12 May 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-09894

8-K

Filing date: 09 May 2025
Reporting date: 09 May 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

424B5 File 333-276062

424B5

Filing date: 09 May 2025
Reporting date: Not listed
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-Q File 001-09894

10-Q

Filing date: 09 May 2025
Reporting date: 31 Mar 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-09894

8-K

Filing date: 09 May 2025
Reporting date: 08 May 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

PX14A6G File 001-09894

PX14A6G filing

Filing date: 08 May 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 16 Apr 2025
Reporting date: 15 Apr 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

3

FORM 3

Filing date: 16 Apr 2025
Reporting date: 07 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

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

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

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

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .