Robert J. Durian - 19 Feb 2026 Form 4 Insider Report for ALLIANT ENERGY CORP (LNT)

Role
EVP and CFO
Signature
/s/ Jake C. Blavat, Attorney-in-Fact
Issuer symbol
LNT
Transactions as of
19 Feb 2026
Net transactions value
-$1,164,266
Form type
4
Filing time
23 Feb 2026, 19:12:28 UTC
Previous filing
24 Feb 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
DURIAN ROBERT J EVP and CFO C/O ALLIANT ENERGY CORPORATION, 4902 N. BILTMORE LANE, MADISON /s/ Jake C. Blavat, Attorney-in-Fact 23 Feb 2026 0001512789

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction LNT Common Stock Award $0 +27,882 +20% $0.000000 167,806 19 Feb 2026 Direct F1
transaction LNT Common Stock Award $0 +5,950 +3.5% $0.000000 173,756 19 Feb 2026 Direct F2
transaction LNT Common Stock Tax liability $1,164,266 -16,630 -9.6% $70.01 157,126 19 Feb 2026 Direct
holding LNT Common Stock 5,608 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.