Alliant Energy LNT SEC Filings

NASDAQ LNT
$73.26 -0.20 (-0.27%)
As of: Nov 10, 2026 · 3:59 PM EST
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Alliant Energy Corp (LNT) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
1S-3ASROthers0000352541-26-000053Nov 6, 2026 7:15 PM
28-KCurrent Report0000352541-26-000045Oct 30, 2026 10:06 PM
38-KCurrent Report0001193125-26-435177Oct 28, 2026 12:15 PM
44Insider Transaction0001191569-26-000013Oct 14, 2026 7:12 PM
54Insider Transaction0002115951-26-000005Oct 14, 2026 7:11 PM
64Insider Transaction0001654634-26-000004Oct 14, 2026 7:10 PM
74Insider Transaction0001463371-26-000004Oct 14, 2026 7:10 PM
84Insider Transaction0001684665-26-000007Oct 14, 2026 7:09 PM
94Insider Transaction0001607542-26-000004Oct 14, 2026 7:08 PM
104Insider Transaction0001298509-26-000006Oct 14, 2026 7:07 PM
114Insider Transaction0001942745-26-000006Oct 14, 2026 7:06 PM
128-KCurrent Report0001193125-26-360020Aug 21, 2026 12:45 PM
134Insider Transaction0001512789-26-000003Aug 12, 2026 8:16 PM
1410-QQuarterly & Annual Report0000352541-26-000043Jul 31, 2026 3:22 PM
158-KCurrent Report0000352541-26-000042Jul 31, 2026 10:02 PM
164Insider Transaction0001191569-26-000010Jul 14, 2026 2:36 PM
174Insider Transaction0001654634-26-000003Jul 14, 2026 2:35 PM
184Insider Transaction0001463371-26-000003Jul 14, 2026 2:33 PM
194Insider Transaction0001684665-26-000006Jul 14, 2026 2:32 PM
204Insider Transaction0001607542-26-000003Jul 14, 2026 2:31 PM
214Insider Transaction0001298509-26-000005Jul 14, 2026 2:30 PM
224Insider Transaction0001942745-26-000004Jul 14, 2026 2:28 PM
234Insider Transaction0002115951-26-000004Jul 14, 2026 2:27 PM
2411-KOthers0000352541-26-000038Jun 16, 2026 9:03 PM
258-KCurrent Report0000352541-26-000036May 21, 2026 9:05 PM
2610-QQuarterly & Annual Report0000352541-26-000033May 1, 2026 3:07 PM
278-KCurrent Report0000352541-26-000030May 1, 2026 10:23 PM
28SCHEDULE 13GBeneficial Ownership Report0002100119-26-000053Apr 29, 2026 2:17 PM
29SCHEDULE 13GBeneficial Ownership Report0002100121-26-000056Apr 28, 2026 7:50 PM
304Insider Transaction0001973120-26-000003Apr 16, 2026 11:11 PM
314Insider Transaction0001191569-26-000007Apr 14, 2026 8:25 PM
324Insider Transaction0001654634-26-000002Apr 14, 2026 8:23 PM
334Insider Transaction0001463371-26-000002Apr 14, 2026 8:22 PM
344Insider Transaction0001684665-26-000002Apr 14, 2026 8:22 PM
354Insider Transaction0001607542-26-000002Apr 14, 2026 8:16 PM
364Insider Transaction0001298509-26-000002Apr 14, 2026 8:16 PM
374Insider Transaction0001942745-26-000003Apr 14, 2026 8:15 PM
38ARSOthers0000352541-26-000027Mar 31, 2026 10:03 PM
39DEFA14AOthers0000352541-26-000026Mar 31, 2026 10:03 PM
40DEF 14AOthers0000352541-26-000025Mar 31, 2026 10:02 PM
41SCHEDULE 13GBeneficial Ownership Report0000102909-26-000581Mar 26, 2026 7:25 PM
428-KCurrent Report0001193125-26-116244Mar 19, 2026 9:28 PM
43424B5Prospectus0001193125-26-116238Mar 19, 2026 9:27 PM
444Insider Transaction0002105470-26-000005Mar 19, 2026 8:52 PM
453Insider Transaction0002115951-26-000002Mar 4, 2026 8:25 PM
468-KCurrent Report0000352541-26-000009Mar 4, 2026 1:13 AM
474Insider Transaction0001541185-26-000004Feb 23, 2026 12:15 AM
484Insider Transaction0002105470-26-000003Feb 23, 2026 12:14 AM
494Insider Transaction0001763201-26-000001Feb 23, 2026 12:13 AM
504Insider Transaction0001512789-26-000001Feb 23, 2026 12:12 AM
...

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