# Alliant Energy Corp: filings

LNT · Nasdaq · CIK 352541 · [Utilities](/sectors/utilities.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/lnt.md) · [Financials](/companies/lnt/financials.md) · [Filings](/companies/lnt/filings.md) · [Insiders](/companies/lnt/insiders.md)

## Reports and events: 306 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 1156, 8-K 214, 10-Q 54, 3 29, SC 13G/A 28, 4/A 19, 10-K 18, 11-K 18, DEF 14A 18, 424B5 12, ARS 11, S-3ASR 11, DEFA14A 10, UPLOAD 10, S-8 POS 9, CORRESP 6, S-8 4, SC 13G 3, 3/A 2, 424B2 2, 8-K/A 2, FWP 2, SCHEDULE 13G 2, 25 1, 8-A12B 1, CERT 1, NO ACT 1, POSASR 1, PX14A6G 1, SCHEDULE 13G/A 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-30 | 11:21 ET | [10-Q](/filings/0000352541-26-000047.md) | Quarterly report, period 2026-09-30 | 0000352541-26-000047 |
| 2026-10-30 | 18:06 ET | [8-K](/filings/0000352541-26-000045.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-26-000045 |
| 2026-10-28 | 08:15 ET | [8-K](/filings/0001193125-26-435177.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0001193125-26-435177 |
| 2026-08-21 | 08:45 ET | [8-K](/filings/0001193125-26-360020.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-26-360020 |
| 2026-07-31 | 11:22 ET | [10-Q](/filings/0000352541-26-000043.md) | Quarterly report, period 2026-06-30 | 0000352541-26-000043 |
| 2026-07-31 | 18:02 ET | [8-K](/filings/0000352541-26-000042.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-26-000042 |
| 2026-05-21 | 17:05 ET | [8-K](/filings/0000352541-26-000036.md) | 5.07 Shareholder vote results | 0000352541-26-000036 |
| 2026-05-01 | 11:07 ET | [10-Q](/filings/0000352541-26-000033.md) | Quarterly report, period 2026-03-31 | 0000352541-26-000033 |
| 2026-05-01 | 18:23 ET | [8-K](/filings/0000352541-26-000030.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-26-000030 |
| 2026-03-31 | 18:02 ET | [DEF 14A](/filings/0000352541-26-000025.md) | Proxy statement, period 2026-05-20 | 0000352541-26-000025 |
| 2026-03-19 | 17:28 ET | [8-K](/filings/0001193125-26-116244.md) | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-26-116244 |
| 2026-03-04 | 20:13 ET | [8-K](/filings/0000352541-26-000009.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000352541-26-000009 |
| 2026-02-20 | 14:58 ET | [10-K](/filings/0000352541-26-000007.md) | Annual report, period 2025-12-31 | 0000352541-26-000007 |
| 2026-02-20 | 18:22 ET | [8-K](/filings/0000352541-26-000005.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-26-000005 |
| 2026-01-08 | 16:15 ET | [8-K](/filings/0000352541-26-000003.md) | 5.02 Departure or appointment of officers or directors | 0000352541-26-000003 |
| 2025-12-16 | 16:20 ET | [8-K](/filings/0000352541-25-000089.md) | 5.02 Departure or appointment of officers or directors | 0000352541-25-000089 |
| 2025-12-05 | 21:45 ET | [8-K](/filings/0000352541-25-000085.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000352541-25-000085 |
| 2025-11-07 | 12:02 ET | [10-Q](/filings/0000352541-25-000081.md) | Quarterly report, period 2025-09-30 | 0000352541-25-000081 |
| 2025-11-07 | 18:10 ET | [8-K](/filings/0000352541-25-000079.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-25-000079 |
| 2025-09-26 | 19:58 ET | [8-K](/filings/0000352541-25-000076.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000352541-25-000076 |
| 2025-09-11 | 21:34 ET | [8-K](/filings/0000352541-25-000074.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000352541-25-000074 |
| 2025-08-08 | 11:49 ET | [10-Q](/filings/0000352541-25-000072.md) | Quarterly report, period 2025-06-30 | 0000352541-25-000072 |
| 2025-08-08 | 18:03 ET | [8-K](/filings/0000352541-25-000070.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-25-000070 |
| 2025-05-20 | 09:32 ET | [8-K](/filings/0000352541-25-000055.md) | 5.07 Shareholder vote results | 0000352541-25-000055 |
| 2025-05-19 | 09:00 ET | [8-K](/filings/0001628280-25-026398.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001628280-25-026398 |
| 2025-05-15 | 16:12 ET | [8-K](/filings/0001193125-25-120808.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 3.02 Unregistered sale of equity; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-120808 |
| 2025-05-09 | 17:28 ET | [8-K](/filings/0001193125-25-116990.md) | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-25-116990 |
| 2025-05-09 | 12:28 ET | [10-Q](/filings/0000352541-25-000053.md) | Quarterly report, period 2025-03-31 | 0000352541-25-000053 |
| 2025-05-09 | 18:20 ET | [8-K](/filings/0000352541-25-000050.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-25-000050 |
| 2025-04-01 | 18:02 ET | [DEF 14A](/filings/0000352541-25-000036.md) | Proxy statement, period 2025-05-16 | 0000352541-25-000036 |
| 2025-03-10 | 08:35 ET | [8-K](/filings/0000352541-25-000029.md) | 5.02 Departure or appointment of officers or directors | 0000352541-25-000029 |
| 2025-03-03 | 16:08 ET | [8-K](/filings/0000352541-25-000025.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000352541-25-000025 |
| 2025-02-21 | 16:46 ET | [10-K](/filings/0000352541-25-000014.md) | Annual report, period 2024-12-31 | 0000352541-25-000014 |
| 2025-02-21 | 18:08 ET | [8-K](/filings/0000352541-25-000012.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-25-000012 |
| 2025-02-11 | 19:11 ET | [8-K](/filings/0000352541-25-000009.md) | 5.02 Departure or appointment of officers or directors | 0000352541-25-000009 |
| 2024-12-18 | 10:31 ET | [8-K](/filings/0000352541-24-000107.md) | 2.03 New direct financial obligation; 9.01 Financial statements and exhibits | 0000352541-24-000107 |
| 2024-11-01 | 11:39 ET | [10-Q](/filings/0000352541-24-000104.md) | Quarterly report, period 2024-09-30 | 0000352541-24-000104 |
| 2024-11-01 | 18:05 ET | [8-K](/filings/0000352541-24-000102.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-24-000102 |
| 2024-09-06 | 08:56 ET | [8-K](/filings/0000352541-24-000092.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0000352541-24-000092 |
| 2024-08-02 | 11:51 ET | [10-Q](/filings/0000352541-24-000089.md) | Quarterly report, period 2024-06-30 | 0000352541-24-000089 |
| 2024-08-02 | 18:05 ET | [8-K](/filings/0000352541-24-000087.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-24-000087 |
| 2024-07-26 | 12:21 ET | [8-K](/filings/0000352541-24-000084.md) | 5.04 Item not in the standard list; 9.01 Financial statements and exhibits | 0000352541-24-000084 |
| 2024-07-15 | 16:42 ET | [8-K](/filings/0000352541-24-000074.md) | 5.02 Departure or appointment of officers or directors | 0000352541-24-000074 |
| 2024-06-24 | 16:48 ET | [8-K](/filings/0000352541-24-000072.md) | 2.06 Material impairments | 0000352541-24-000072 |
| 2024-06-06 | 13:17 ET | [8-K](/filings/0000352541-24-000067.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 8.01 Other events; 9.01 Financial statements and exhibits | 0000352541-24-000067 |
| 2024-05-20 | 16:35 ET | [8-K](/filings/0000352541-24-000064.md) | 5.07 Shareholder vote results | 0000352541-24-000064 |
| 2024-05-03 | 11:56 ET | [10-Q](/filings/0000352541-24-000058.md) | Quarterly report, period 2024-03-31 | 0000352541-24-000058 |
| 2024-05-03 | 18:06 ET | [8-K](/filings/0000352541-24-000054.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0000352541-24-000054 |
| 2024-04-02 | 17:37 ET | [DEF 14A](/filings/0000352541-24-000038.md) | Proxy statement, period 2024-05-17 | 0000352541-24-000038 |
| 2024-03-08 | 17:03 ET | [8-K](/filings/0000352541-24-000032.md) | 5.02 Departure or appointment of officers or directors | 0000352541-24-000032 |

Page 1 of 7. [Older](/companies/lnt/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 31, 2026, 12:29 ET. No prices; not investment advice.