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Alliant Energy Corp SEC Filings
What Alliant Energy Corp has told the SEC happened, by the 8-K items and forms it filed under: when it reported results, who joined or left, what it bought or sold, and whether its auditor or its accounts ever changed.
LNT overview →Filings on file
143
since Oct 7, 2016
Warning signs
2
latest Jun 24, 2024
Last results
Jul 31, 2026
8-K item 2.02
Industry
Electric & Other Services Combined
SIC 4931
Newest first
Each label is a form type or an 8-K item as filed; each row links to the filing.
| Filed | What it reports | Document |
|---|---|---|
| Jul 31, 2026 | Quarterly report 10-Q | Read ↗ |
| Jul 31, 2026 | Results announced 8-K | Read ↗ |
| May 21, 2026 | Shareholder vote 8-K | Read ↗ |
| May 1, 2026 | Quarterly report 10-Q | Read ↗ |
| May 1, 2026 | Results announced 8-K | Read ↗ |
| Mar 19, 2026 | Material agreement 8-K | Read ↗ |
| Mar 4, 2026 | Material agreementNew debt 8-K | Read ↗ |
| Feb 20, 2026 | Annual report 10-K | Read ↗ |
| Feb 20, 2026 | Results announced 8-K | Read ↗ |
| Jan 8, 2026 | Executive or director change 8-K | Read ↗ |
| Dec 16, 2025 | Executive or director change 8-K | Read ↗ |
| Nov 7, 2025 | Quarterly report 10-Q | Read ↗ |
| Nov 7, 2025 | Results announced 8-K | Read ↗ |
| Aug 8, 2025 | Quarterly report 10-Q | Read ↗ |
| Aug 8, 2025 | Results announced 8-K | Read ↗ |
| May 20, 2025 | Shareholder vote 8-K | Read ↗ |
| May 15, 2025 | Material agreementNew debtUnregistered share sale 8-K | Read ↗ |
| May 9, 2025 | Material agreement 8-K | Read ↗ |
| May 9, 2025 | Quarterly report 10-Q | Read ↗ |
| May 9, 2025 | Results announced 8-K | Read ↗ |
| Mar 10, 2025 | Executive or director change 8-K | Read ↗ |
| Mar 3, 2025 | Material agreementNew debt 8-K | Read ↗ |
| Feb 21, 2025 | Annual report 10-K | Read ↗ |
| Feb 21, 2025 | Results announced 8-K | Read ↗ |
| Feb 11, 2025 | Executive or director change 8-K | Read ↗ |
| Dec 18, 2024 | New debt 8-K | Read ↗ |
| Nov 1, 2024 | Quarterly report 10-Q | Read ↗ |
| Nov 1, 2024 | Results announced 8-K | Read ↗ |
| Aug 2, 2024 | Quarterly report 10-Q | Read ↗ |
| Aug 2, 2024 | Results announced 8-K | Read ↗ |
| Jul 15, 2024 | Executive or director change 8-K | Read ↗ |
| Jun 24, 2024 | Material impairment 8-K | Read ↗ |
| Jun 6, 2024 | Material agreementNew debt 8-K | Read ↗ |
| May 20, 2024 | Shareholder vote 8-K | Read ↗ |
| May 3, 2024 | Quarterly report 10-Q | Read ↗ |
| May 3, 2024 | Results announced 8-K | Read ↗ |
| Mar 8, 2024 | Executive or director change 8-K | Read ↗ |
| Mar 5, 2024 | Material agreementNew debt 8-K | Read ↗ |
| Feb 16, 2024 | Annual report 10-K | Read ↗ |
| Feb 16, 2024 | Results announced 8-K | Read ↗ |
| Feb 13, 2024 | Executive or director change 8-K | Read ↗ |
| Nov 13, 2023 | Material agreementNew debt 8-K | Read ↗ |
| Nov 3, 2023 | Quarterly report 10-Q | Read ↗ |
| Nov 3, 2023 | Results announced 8-K | Read ↗ |
| Oct 26, 2023 | Executive or director change 8-K | Read ↗ |
| Aug 4, 2023 | Quarterly report 10-Q | Read ↗ |
| Aug 4, 2023 | Results announced 8-K | Read ↗ |
| Jul 14, 2023 | Executive or director change 8-K | Read ↗ |
| May 25, 2023 | Shareholder vote 8-K | Read ↗ |
| May 5, 2023 | Quarterly report 10-Q | Read ↗ |
| May 5, 2023 | Results announced 8-K | Read ↗ |
| Mar 16, 2023 | New debt 8-K | Read ↗ |
| Mar 13, 2023 | New debtUnregistered share sale 8-K | Read ↗ |
| Mar 3, 2023 | Material agreementNew debtUnregistered share sale 8-K | Read ↗ |
| Feb 24, 2023 | Annual report 10-K | Read ↗ |
| Feb 24, 2023 | Results announced 8-K | Read ↗ |
| Jan 13, 2023 | Executive or director change 8-K | Read ↗ |
| Jan 4, 2023 | Executive or director change 8-K | Read ↗ |
| Dec 15, 2022 | Material agreement 8-K | Read ↗ |
| Nov 8, 2022 | Quarterly report 10-Q | Read ↗ |
| Nov 8, 2022 | Results announced 8-K | Read ↗ |
| Aug 5, 2022 | Quarterly report 10-Q | Read ↗ |
| Aug 5, 2022 | Results announced 8-K | Read ↗ |
| May 24, 2022 | Shareholder vote 8-K | Read ↗ |
| Apr 29, 2022 | Quarterly report 10-Q | Read ↗ |
| Apr 29, 2022 | Results announced 8-K | Read ↗ |
| Mar 4, 2022 | Material agreementNew debt 8-K | Read ↗ |
| Mar 1, 2022 | Material agreementNew debt 8-K | Read ↗ |
| Feb 18, 2022 | Annual report 10-K | Read ↗ |
| Feb 18, 2022 | Results announced 8-K | Read ↗ |
| Feb 8, 2022 | Executive or director change 8-K | Read ↗ |
| Dec 21, 2021 | New debt 8-K | Read ↗ |
| Nov 5, 2021 | Quarterly report 10-Q | Read ↗ |
| Nov 5, 2021 | Results announced 8-K | Read ↗ |
| Oct 28, 2021 | Executive or director change 8-K | Read ↗ |
| Aug 6, 2021 | Quarterly report 10-Q | Read ↗ |
| Aug 6, 2021 | Results announced 8-K | Read ↗ |
| Jul 15, 2021 | Executive or director change 8-K | Read ↗ |
| May 25, 2021 | Shareholder vote 8-K | Read ↗ |
| May 7, 2021 | Quarterly report 10-Q | Read ↗ |
| May 7, 2021 | Results announced 8-K | Read ↗ |
| Feb 19, 2021 | Annual report 10-K | Read ↗ |
| Feb 19, 2021 | Results announced 8-K | Read ↗ |
| Jan 29, 2021 | Executive or director change 8-K | Read ↗ |
| Nov 23, 2020 | Material agreementNew debt 8-K | Read ↗ |
| Nov 3, 2020 | Quarterly report 10-Q | Read ↗ |
| Nov 3, 2020 | Results announced 8-K | Read ↗ |
| Aug 10, 2020 | Quarterly report 10-Q | Read ↗ |
| Aug 7, 2020 | Results announced 8-K | Read ↗ |
| May 22, 2020 | Executive or director changeShareholder vote 8-K | Read ↗ |
| May 8, 2020 | Quarterly report 10-Q | Read ↗ |
| May 8, 2020 | Results announced 8-K | Read ↗ |
| Apr 6, 2020 | Results announced 8-K | Read ↗ |
| Mar 5, 2020 | Material agreementNew debt 8-K | Read ↗ |
| Feb 21, 2020 | Annual report 10-K | Read ↗ |
| Feb 21, 2020 | Results announced 8-K | Read ↗ |
| Dec 13, 2019 | Executive or director change 8-K | Read ↗ |
| Nov 18, 2019 | Material agreement 8-K | Read ↗ |
| Nov 7, 2019 | Quarterly report 10-Q | Read ↗ |
| Nov 7, 2019 | Results announced 8-K | Read ↗ |
| Aug 2, 2019 | Quarterly report 10-Q | Read ↗ |
| Aug 2, 2019 | Results announced 8-K | Read ↗ |
| May 20, 2019 | Shareholder vote 8-K | Read ↗ |
| May 3, 2019 | Quarterly report 10-Q | Read ↗ |
| May 3, 2019 | Results announced 8-K | Read ↗ |
| Feb 22, 2019 | Annual report 10-K | Read ↗ |
| Feb 22, 2019 | Results announced 8-K | Read ↗ |
| Feb 13, 2019 | Executive or director change 8-K | Read ↗ |
| Dec 28, 2018 | Delisting 25 | Read ↗ |
| Dec 18, 2018 | Delisting notice or listing transfer 8-K | Read ↗ |
| Dec 17, 2018 | Material agreement 8-K | Read ↗ |
| Dec 13, 2018 | Executive or director change 8-K | Read ↗ |
| Nov 7, 2018 | Quarterly report 10-Q | Read ↗ |
| Nov 7, 2018 | Results announced 8-K | Read ↗ |
| Aug 3, 2018 | Quarterly report 10-Q | Read ↗ |
| Aug 3, 2018 | Results announced 8-K | Read ↗ |
| Jul 26, 2018 | Executive or director change 8-K | Read ↗ |
| Jun 12, 2018 | Material agreementNew debt 8-K | Read ↗ |
| May 21, 2018 | Shareholder vote 8-K | Read ↗ |
| May 21, 2018 | Material agreement 8-K | Read ↗ |
| May 3, 2018 | Quarterly report 10-Q | Read ↗ |
| May 3, 2018 | Results announced 8-K | Read ↗ |
| Apr 30, 2018 | Material agreementNew debt 8-K | Read ↗ |
| Mar 15, 2018 | Executive or director change 8-K | Read ↗ |
| Feb 23, 2018 | Annual report 10-K | Read ↗ |
| Feb 22, 2018 | Results announced 8-K | Read ↗ |
| Dec 11, 2017 | Executive or director change 8-K | Read ↗ |
| Nov 3, 2017 | Quarterly report 10-Q | Read ↗ |
| Nov 3, 2017 | Results announced 8-K | Read ↗ |
| Aug 21, 2017 | New debt 8-K | Read ↗ |
| Aug 8, 2017 | Executive or director change 8-K | Read ↗ |
| Aug 4, 2017 | Quarterly report 10-Q | Read ↗ |
| Aug 4, 2017 | Results announced 8-K | Read ↗ |
| May 25, 2017 | Shareholder vote 8-K | Read ↗ |
| May 9, 2017 | Material agreement 8-K | Read ↗ |
| May 4, 2017 | Quarterly report 10-Q | Read ↗ |
| May 4, 2017 | Results announced 8-K | Read ↗ |
| Feb 24, 2017 | Annual report 10-K | Read ↗ |
| Feb 24, 2017 | Results announced 8-K | Read ↗ |
| Nov 4, 2016 | Quarterly report 10-Q | Read ↗ |
| Nov 4, 2016 | Results announced 8-K | Read ↗ |
| Oct 21, 2016 | Results announced 8-K | Read ↗ |
| Oct 7, 2016 | Material agreementNew debt 8-K | Read ↗ |
Source: Alliant Energy Corp's EDGAR filing history, the last ten years. The labels are the form types and 8-K item numbers the company filed under, not a reading of what it wrote — an item 5.02 can be a chief executive fired or a director retiring on schedule — so each row links to the filing.
More on LNT
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