ALLIANT ENERGY CORP - LNT
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 35
Latest filed: May 21, 2026
| Form | Count |
|---|---|
| 4 | 23 |
| 8-K | 8 |
| SCHEDULE 13G | 2 |
| SCHEDULE 13G/A | 1 |
| 4/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| May 21, 2026 | 8-K | May 20, 2026 | 0000352541-26-000036 | View |
| May 01, 2026 | 8-K | Apr 30, 2026 | 0000352541-26-000030 | View |
| Apr 29, 2026 | SCHEDULE 13G | — | 0002100119-26-000053 | View |
| Apr 28, 2026 | SCHEDULE 13G | — | 0002100121-26-000056 | View |
| Apr 16, 2026 | 4 | Apr 15, 2026 | 0001973120-26-000003 | View |
| Apr 14, 2026 | 4 | Apr 10, 2026 | 0001191569-26-000007 | View |
| Apr 14, 2026 | 4 | Apr 10, 2026 | 0001942745-26-000003 | View |
| Apr 14, 2026 | 4 | Apr 10, 2026 | 0001298509-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 10, 2026 | 0001607542-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 10, 2026 | 0001684665-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 10, 2026 | 0001463371-26-000002 | View |
| Apr 14, 2026 | 4 | Apr 10, 2026 | 0001654634-26-000002 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | — | 0000102909-26-000581 | View |
| Mar 19, 2026 | 8-K | Mar 19, 2026 | 0001193125-26-116244 | View |
| Mar 19, 2026 | 4/A | Feb 19, 2026 | 0002105470-26-000005 | View |
| Mar 04, 2026 | 8-K | Mar 02, 2026 | 0000352541-26-000009 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0002058131-26-000002 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001936520-26-000001 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001973120-26-000001 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0002022959-26-000001 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001512789-26-000001 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001763201-26-000001 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0002105470-26-000003 | View |
| Feb 23, 2026 | 4 | Feb 19, 2026 | 0001541185-26-000004 | View |
| Feb 20, 2026 | 8-K | Feb 19, 2026 | 0000352541-26-000005 | View |
| Jan 12, 2026 | 4 | Jan 09, 2026 | 0001942745-26-000001 | View |
| Jan 12, 2026 | 4 | Jan 09, 2026 | 0001298509-26-000001 | View |
| Jan 12, 2026 | 4 | Jan 09, 2026 | 0001607542-26-000001 | View |
| Jan 12, 2026 | 4 | Jan 09, 2026 | 0001684665-26-000001 | View |
| Jan 12, 2026 | 4 | Jan 09, 2026 | 0001463371-26-000001 | View |
| Jan 12, 2026 | 4 | Jan 09, 2026 | 0001654634-26-000001 | View |
| Jan 12, 2026 | 4 | Jan 09, 2026 | 0001191569-26-000002 | View |
| Jan 08, 2026 | 8-K | Jan 05, 2026 | 0000352541-26-000003 | View |
| Dec 16, 2025 | 8-K | Dec 10, 2025 | 0000352541-25-000089 | View |
| Dec 05, 2025 | 8-K | Dec 02, 2025 | 0000352541-25-000085 | View |