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ALLIANT ENERGY CORP

For the period ended Jun 30, 2025. Filed Aug 8, 2025.

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About this filing

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.

Jun 30, 2025 · Filed Aug 8, 2025

LNT$73.46+1.1%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Table of Contents

Page
Definitions
Forward-looking Statements1
Part I. Financial Information3
Item 1. Condensed Consolidated Financial Statements (Unaudited)3
Alliant Energy Corporation3
Interstate Power and Light Company6
Wisconsin Power and Light Company9
Combined Notes to Condensed Consolidated Financial Statements12
1. Summary of Significant Accounting Policies12
2. Regulatory Matters12
3. Receivables13
4. Investments13
5. Common Equity14
6. Debt16
7. Revenues18
8. Income Taxes19
9. Benefit Plans19
10. Derivative Instruments20
11. Fair Value Measurements21
12. Commitments and Contingencies23
13. Segments of Business25
14. Related Parties27
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations28
Item 3. Quantitative and Qualitative Disclosures About Market Risk36
Item 4. Controls and Procedures36
Part II. Other Information37
Item 1. Legal Proceedings37
Item 1A. Risk Factors37
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds37
Item 5. Other Information37
Item 6. Exhibits38
Signatures38
ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.