ALLIANT ENERGY CORP
For the period ended Sep 30, 2026. Filed Oct 30, 2026.
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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.
Sep 30, 2026 · Filed Oct 30, 2026
LNT$73.46+1.1%Stored close · as of Nov 9, 2026
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Item 6. Exhibits
The following Exhibits are filed herewith or incorporated herein by reference.
| Exhibit Number | Description |
| 3.1 | Amended and Restated Bylaws of Alliant Energy, effective July 31, 2026 (incorporated by reference to Exhibit 3.1 to Alliant Energy’s Form 10-Q for the quarter ended June 30, 2026 (File No. 1-9894)) |
| 3.2 | Amended and Restated Bylaws of IPL, effective July 31, 2026 (incorporated by reference to Exhibit 3.2 to IPL’s Form 10-Q for the quarter ended June 30, 2026 (File No. 1-4117)) |
| 3.3 | Amended and Restated Bylaws of WPL, effective July 31, 2026 (incorporated by reference to Exhibit 3.3 to WPL’s Form 10-Q for the quarter ended June 30, 2026 (File No. 0-337)) |
| 4.1 | Officer’s Certificate, dated August 21, 2026, creating IPL’s 5.100% Senior Debentures due September 30, 2031 (incorporated by reference to Exhibit 4.1 to IPL’s Form 8-K filed August 21, 2026 (File No. 1-4117)) |
| 31.1 | Certification of the Chief Executive Officer for Alliant Energy |
| 31.2 | Certification of the Chief Financial Officer for Alliant Energy |
| 31.3 | Certification of the Chief Executive Officer for IPL |
| 31.4 | Certification of the Chief Financial Officer for IPL |
| 31.5 | Certification of the Chief Executive Officer for WPL |
| 31.6 | Certification of the Chief Financial Officer for WPL |
| 32.1 | Written Statement of the Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C.§1350 for Alliant Energy |
| 32.2 | Written Statement of the Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C.§1350 for IPL |
| 32.3 | Written Statement of the Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C.§1350 for WPL |
| 101.INS | Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document |
| 101.SCH | Inline XBRL Taxonomy Extension Schema Document |
| 101.CAL | Inline XBRL Taxonomy Extension Calculation Linkbase Document |
| 101.LAB | Inline XBRL Taxonomy Extension Label Linkbase Document |
| 101.PRE | Inline XBRL Taxonomy Extension Presentation Linkbase Document |
| 101.DEF | Inline XBRL Taxonomy Extension Definition Linkbase Document |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |
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