CompanyScope

Alliant Energy Corp. 10-K and 10-Q filings

Ticker LNT · SEC CIK 352541 · Latest fiscal year ended Dec 31, 2025

Alliant Energy Corp. has 16 annual reports and 48 quarterly reports with XBRL financial data on SEC EDGAR, filed between Aug 5, 2010 and May 1, 2026. Each link opens the filing's index page on sec.gov, where you can read the full document.

FiledFormAccession numberDocument
May 1, 202610-Q0000352541-26-000033View on SEC EDGAR
Feb 20, 202610-K0000352541-26-000007View on SEC EDGAR
Nov 7, 202510-Q0000352541-25-000081View on SEC EDGAR
Aug 8, 202510-Q0000352541-25-000072View on SEC EDGAR
May 9, 202510-Q0000352541-25-000053View on SEC EDGAR
Feb 21, 202510-K0000352541-25-000014View on SEC EDGAR
Nov 1, 202410-Q0000352541-24-000104View on SEC EDGAR
Aug 2, 202410-Q0000352541-24-000089View on SEC EDGAR
May 3, 202410-Q0000352541-24-000058View on SEC EDGAR
Feb 16, 202410-K0000352541-24-000014View on SEC EDGAR
Nov 3, 202310-Q0000352541-23-000108View on SEC EDGAR
Aug 4, 202310-Q0000352541-23-000091View on SEC EDGAR
May 5, 202310-Q0000352541-23-000059View on SEC EDGAR
Feb 24, 202310-K0000352541-23-000017View on SEC EDGAR
Nov 8, 202210-Q0000352541-22-000082View on SEC EDGAR
Aug 5, 202210-Q0000352541-22-000075View on SEC EDGAR
Apr 29, 202210-Q0000352541-22-000058View on SEC EDGAR
Feb 18, 202210-K0000352541-22-000020View on SEC EDGAR
Nov 5, 202110-Q0000352541-21-000095View on SEC EDGAR
Aug 6, 202110-Q0000352541-21-000076View on SEC EDGAR
May 7, 202110-Q0000352541-21-000056View on SEC EDGAR
Feb 19, 202110-K0000352541-21-000022View on SEC EDGAR
Nov 3, 202010-Q0000352541-20-000108View on SEC EDGAR
Aug 10, 202010-Q0000352541-20-000090View on SEC EDGAR
May 8, 202010-Q0000352541-20-000064View on SEC EDGAR
Feb 21, 202010-K0000352541-20-000021View on SEC EDGAR
Nov 7, 201910-Q0000352541-19-000099View on SEC EDGAR
Aug 2, 201910-Q0000352541-19-000082View on SEC EDGAR
May 3, 201910-Q0000352541-19-000053View on SEC EDGAR
Feb 22, 201910-K0000352541-19-000013View on SEC EDGAR
Nov 7, 201810-Q0000352541-18-000089View on SEC EDGAR
Aug 3, 201810-Q0000352541-18-000078View on SEC EDGAR
May 3, 201810-Q0000352541-18-000051View on SEC EDGAR
Feb 23, 201810-K0000352541-18-000019View on SEC EDGAR
Nov 3, 201710-Q0000352541-17-000103View on SEC EDGAR
Aug 4, 201710-Q0000352541-17-000081View on SEC EDGAR
May 4, 201710-Q0000352541-17-000054View on SEC EDGAR
Feb 24, 201710-K0000352541-17-000017View on SEC EDGAR
Nov 4, 201610-Q0000352541-16-000203View on SEC EDGAR
Aug 2, 201610-Q0000352541-16-000165View on SEC EDGAR
May 5, 201610-Q0000352541-16-000116View on SEC EDGAR
Feb 24, 201610-K0000352541-16-000076View on SEC EDGAR
Nov 6, 201510-Q0000352541-15-000030View on SEC EDGAR
Aug 6, 201510-Q0000352541-15-000022View on SEC EDGAR
May 1, 201510-Q0000352541-15-000011View on SEC EDGAR
Feb 25, 201510-K0000352541-15-000005View on SEC EDGAR
Nov 7, 201410-Q0000352541-14-000025View on SEC EDGAR
Aug 7, 201410-Q0000352541-14-000019View on SEC EDGAR
May 2, 201410-Q0000352541-14-000011View on SEC EDGAR
Feb 25, 201410-K0000352541-14-000006View on SEC EDGAR
Nov 7, 201310-Q0000352541-13-000026View on SEC EDGAR
Aug 2, 201310-Q0000352541-13-000020View on SEC EDGAR
May 3, 201310-Q0000352541-13-000012View on SEC EDGAR
Feb 26, 201310-K0000352541-13-000007View on SEC EDGAR
Nov 9, 201210-Q0000352541-12-000017View on SEC EDGAR
Aug 3, 201210-Q0000352541-12-000008View on SEC EDGAR
May 4, 201210-Q0001193125-12-211596View on SEC EDGAR
Feb 27, 201210-K0001193125-12-081622View on SEC EDGAR
Nov 3, 201110-Q0001193125-11-295400View on SEC EDGAR
Aug 5, 201110-Q0001193125-11-211511View on SEC EDGAR
May 5, 201110-Q0001193125-11-127887View on SEC EDGAR
Feb 28, 201110-K0001193125-11-049662View on SEC EDGAR
Oct 29, 201010-Q0001193125-10-240771View on SEC EDGAR
Aug 5, 201010-Q0001193125-10-179039View on SEC EDGAR

This list covers filings that contain XBRL financial data (generally from 2009 onward). It does not include 8-Ks, proxy statements or other forms. For the complete history, see Alliant Energy Corp. on EDGAR.

Source: SEC EDGAR XBRL company facts for CIK 352541 (raw data). Most recent filing in this dataset: 10-Q filed May 1, 2026. SEC data file dated Nov 3, 2026; page built Nov 5, 2026. Figures are as most recently reported, including restatements. How we select figures.