ALLIANT ENERGY CORP — 8-K Filings
302 8-K filings on record
This page lists all 8-K filings submitted to the SEC by ALLIANT ENERGY CORP (LNT), sorted by most recent first. Each row links to the full filing on EdgarLookup. ALLIANT ENERGY CORP has filed 302 8-K documents with the SEC since 2013. To view all SEC filings by ALLIANT ENERGY CORP, see the full filings list.
All
10-K
10-K/A
10-K405
10-K405/A
10-Q
10-Q/A
11-K
15-15D
25
3
3/A
35-CERT
35-CERT/A
4
4/A
424B2
424B3
424B5
5
5/A
8-A12B
8-A12B/A
8-K
8-K/A
ARS
CERT
CORRESP
CT ORDER
DEF 14A
DEFA14A
FWP
NO ACT
NT 10-K
NT 11-K
POS AMC
POSASR
PRE 14A
PX14A6G
RW
S-3
S-3/A
S-3ASR
S-3D
S-3MEF
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SCHEDULE 13G/A
SE
U-1
U-1/A
U-12-IB
U-13-60
U-57
U-6B-2
U-6B-2/A
U-9C-3
U5A
U5B
U5B/A
U5S
U5S/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 8-K | 8-K | 0001193125-26-116244 | Mar 19, 2026 | — |
| 8-K | 8-K | 0000352541-26-000009 | Mar 4, 2026 | Mar 2, 2026 |
| 8-K | 8-K | 0000352541-26-000005 | Feb 20, 2026 | Feb 19, 2026 |
| 8-K | 8-K | 0000352541-26-000003 | Jan 8, 2026 | Jan 5, 2026 |
| 8-K | 8-K | 0000352541-25-000089 | Dec 16, 2025 | Dec 10, 2025 |
| 8-K | 8-K | 0000352541-25-000085 | Dec 5, 2025 | Dec 2, 2025 |
| 8-K | 8-K | 0000352541-25-000079 | Nov 7, 2025 | Nov 6, 2025 |
| 8-K | 8-K | 0000352541-25-000076 | Sep 26, 2025 | Sep 23, 2025 |
| 8-K | 8-K | 0000352541-25-000074 | Sep 11, 2025 | Sep 8, 2025 |
| 8-K | 8-K | 0000352541-25-000070 | Aug 8, 2025 | Aug 7, 2025 |
| 8-K | 8-K | 0000352541-25-000055 | May 20, 2025 | May 16, 2025 |
| 8-K | 8-K | 0001628280-25-026398 | May 19, 2025 | May 13, 2025 |
| 8-K | 8-K | 0001193125-25-120808 | May 15, 2025 | May 12, 2025 |
| 8-K | 8-K | 0000352541-25-000050 | May 9, 2025 | May 8, 2025 |
| 8-K | 8-K | 0001193125-25-116990 | May 9, 2025 | — |
| 8-K | 8-K | 0000352541-25-000029 | Mar 10, 2025 | Mar 7, 2025 |
| 8-K | 8-K | 0000352541-25-000025 | Mar 3, 2025 | — |
| 8-K | 8-K | 0000352541-25-000012 | Feb 21, 2025 | Feb 20, 2025 |
| 8-K | 8-K | 0000352541-25-000009 | Feb 11, 2025 | Feb 7, 2025 |
| 8-K | 8-K | 0000352541-24-000107 | Dec 18, 2024 | — |
| 8-K | 8-K | 0000352541-24-000102 | Nov 1, 2024 | Oct 31, 2024 |
| 8-K | 8-K | 0000352541-24-000092 | Sep 6, 2024 | Sep 4, 2024 |
| 8-K | 8-K | 0000352541-24-000087 | Aug 2, 2024 | Aug 1, 2024 |
| 8-K | 8-K | 0000352541-24-000084 | Jul 26, 2024 | Jul 22, 2024 |
| 8-K | 8-K | 0000352541-24-000074 | Jul 15, 2024 | Jul 10, 2024 |
| 8-K | 8-K | 0000352541-24-000072 | Jun 24, 2024 | Jun 20, 2024 |
| 8-K | 8-K | 0000352541-24-000067 | Jun 6, 2024 | Jun 3, 2024 |
| 8-K | 8-K | 0000352541-24-000064 | May 20, 2024 | May 17, 2024 |
| 8-K | 8-K | 0000352541-24-000054 | May 3, 2024 | May 2, 2024 |
| 8-K | 8-K | 0000352541-24-000032 | Mar 8, 2024 | Mar 7, 2024 |
| 8-K | 8-K | 0000352541-24-000029 | Mar 7, 2024 | Mar 4, 2024 |
| 8-K | 8-K | 0000352541-24-000026 | Mar 5, 2024 | Mar 1, 2024 |
| 8-K | 8-K | 0000352541-24-000011 | Feb 16, 2024 | Feb 15, 2024 |
| 8-K | 8-K | 0000352541-24-000009 | Feb 13, 2024 | Feb 8, 2024 |
| 8-K | 8-K | 0000352541-23-000115 | Nov 13, 2023 | Nov 7, 2023 |
| 8-K | 8-K | 0000352541-23-000106 | Nov 3, 2023 | Nov 2, 2023 |
| 8-K | 8-K | 0000352541-23-000104 | Oct 26, 2023 | Oct 25, 2023 |
| 8-K | 8-K | 0000352541-23-000096 | Sep 21, 2023 | Sep 18, 2023 |
| 8-K | 8-K | 0000352541-23-000088 | Aug 4, 2023 | Aug 3, 2023 |
| 8-K | 8-K | 0000352541-23-000083 | Jul 14, 2023 | Jul 11, 2023 |
| 8-K | 8-K | 0000352541-23-000061 | May 25, 2023 | May 23, 2023 |
| 8-K | 8-K | 0000352541-23-000056 | May 5, 2023 | May 4, 2023 |
| 8-K | 8-K | 0000352541-23-000035 | Mar 30, 2023 | Mar 27, 2023 |
| 8-K | 8-K | 0000352541-23-000032 | Mar 16, 2023 | Mar 15, 2023 |
| 8-K | 8-K | 0000352541-23-000030 | Mar 13, 2023 | Mar 10, 2023 |
| 8-K | 8-K | 0000352541-23-000028 | Mar 3, 2023 | Feb 27, 2023 |
| 8-K | 8-K | 0000352541-23-000012 | Feb 24, 2023 | Feb 23, 2023 |
| 8-K | 8-K | 0000352541-23-000009 | Jan 13, 2023 | — |
| 8-K | 8-K | 0000352541-23-000002 | Jan 4, 2023 | — |
| 8-K | 8-K | 0001193125-22-304962 | Dec 15, 2022 | Dec 14, 2022 |