Dylan Syse - 19 Feb 2026 Form 4 Insider Report for ALLIANT ENERGY CORP (LNT)

Reporting relationship: CAO and Controller
Issuer ticker: LNT
Reported as of: 19 Feb 2026
Net transaction value: -$35,425
SEC form: 4
Accepted by SEC: 23 Feb 2026, 19:07:53 UTC
Prior SEC filing: 12 Mar 2025
Source filing: View source filing
Reporting owner signature: /s/ Jake C. Blavat, Attorney-in-Fact

Key filing fact

Dylan Syse filed Form 4 for ALLIANT ENERGY CORP (LNT) on 23 Feb 2026.

Key facts

This page summarizes Dylan Syse's Form 4 filing for ALLIANT ENERGY CORP (LNT).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 23 Feb 2026, 19:07.

Change

Previous filing in this sequence was filed on 12 Mar 2025.
Current net transaction value: -$35,425.

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 0002058131 Primary reporting owner

Syse Dylan

Relationship: CAO and Controller
Address: C/O ALLIANT ENERGY CORPORATION, 4902 N. BILTMORE LANE, MADISON
Signature: /s/ Jake C. Blavat, Attorney-in-Fact
Signature date: 23 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

LNT transaction

Common Stock

Award

Transaction value: $0
Shares: +1,063
Change %: +39%
Price: $0.000000
Shares after: 3,776
Date: 19 Feb 2026
Ownership: Direct

LNT transaction

Common Stock

Award

Transaction value: $0
Shares: +750
Change %: +20%
Price: $0.000000
Shares after: 4,526
Date: 19 Feb 2026
Ownership: Direct
Footnotes: F1

LNT transaction

Common Stock

Tax liability

Transaction value: $35,425
Shares: -506
Change %: -11%
Price: $70.01
Shares after: 4,020
Date: 19 Feb 2026
Ownership: Direct

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Represents restricted stock units (RSUs) which are converted to common stock on a one-to-one basis when vested. The RSUs vest on December 31, 2028.

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