Ignacio A. Cortina - 10 Jul 2026 Form 4 Insider Report for ALLIANT ENERGY CORP (LNT)

Reporting relationship: Director
Issuer ticker: LNT
Reported as of: 10 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 14 Jul 2026, 10:35:34 UTC
Prior SEC filing: 14 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Jake C. Blavat, Attorney-in-Fact

Key filing fact

Ignacio A. Cortina filed Form 4 for ALLIANT ENERGY CORP (LNT) on 14 Jul 2026.

Key facts

This page summarizes Ignacio A. Cortina's Form 4 filing for ALLIANT ENERGY CORP (LNT).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 14 Jul 2026, 10:35.

Change

Previous filing in this sequence was filed on 14 Apr 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001654634 Primary reporting owner

Cortina Ignacio A

Relationship: Director
Address: C/O ALLIANT ENERGY CORPORATION, 4902 N. BILTMORE LANE, MADISON
Signature: /s/ Jake C. Blavat, Attorney-in-Fact
Signature date: 14 Jul 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

LNT transaction Derivative

Deferred Common Stock Units

Award

Transaction value
Shares: +638
Change %: +6.2%
Price: $76.40^*
Shares after: 10,943
Date: 10 Jul 2026
Ownership: Direct
Underlying class: Deferred Common Stock
Underlying amount: 638
Exercise price: $0.000000
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Units are to be settled in shares of common stock upon the reporting person's termination of services as a director.

Footnote F2

Includes adjustments for accrued dividends, pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11.

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