David A. de Leon - 19 Feb 2026 Form 4 Insider Report for ALLIANT ENERGY CORP (LNT)

Role
Senior Vice President
Signature
/s/ Jake C. Blavat, Attorney-in-Fact
Issuer symbol
LNT
Transactions as of
19 Feb 2026
Net transactions value
-$364,542
Form type
4
Filing time
23 Feb 2026, 19:13:37 UTC
Previous filing
24 Feb 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
de Leon David A Senior Vice President C/O ALLIANT ENERGY CORPORATION, 4902 N. BILTMORE LANE, MADISON /s/ Jake C. Blavat, Attorney-in-Fact 23 Feb 2026 0001763201

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction LNT Common Stock Award $0 +8,616 +21% $0.000000 50,609 19 Feb 2026 Direct F1
transaction LNT Common Stock Award $0 +2,306 +4.6% $0.000000 52,915 19 Feb 2026 Direct F2
transaction LNT Common Stock Tax liability $364,542 -5,207 -9.8% $70.01 47,708 19 Feb 2026 Direct
holding LNT Common Stock 2,279 19 Feb 2026 by 401(k) Plan F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Includes adjustments for accrued dividends, pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11.
F2 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.
F3 Reflects 401(k) holdings as of this filing date.