[Form 4] ALLIANT ENERGY CORP Insider Trading Activity

Rhea-AI Filing Summary

Alliant Energy (LNT) reported a director’s acquisition of 871.771 deferred common stock units on 10/10/2025, coded as A in a Form 4.

The deferred units have a $0 conversion/exercise price and are to be settled in shares of common stock upon the director’s termination of service. The filing lists a $67.75 price for the derivative security on the transaction date. Following this transaction, the director beneficially owns 17,704.737 deferred common stock units.

Insights

Equity compensation analyst

Routine director grant of deferred stock units; neutral impact.

This disclosure records a director’s acquisition of 871.771 deferred common stock units with post-transaction holdings of 17,704.737 units. The instrument carries a stated price of $67.75 and a conversion/exercise price of $0, typical for deferred stock units that mirror share value.

The units settle in common stock when the director’s board service ends, so there is no immediate share issuance. The inclusion of dividend reinvestment adjustments indicates the award accrues dividend equivalents. Market impact depends on future settlement and is generally modest for ongoing director compensation.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Falotico Nancy Joy

(Last) (First) (Middle)

C/O ALLIANT ENERGY CORPORATION

4902 N. BILTMORE LANE

(Street)

MADISON WI 53718

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ALLIANT ENERGY CORP [ LNT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/10/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Deferred Common Stock Units	$0	10/10/2025	10/10/2025	A		871.771		(1)	(1)	Common Stock	871.771	$67.75	17,704.737(2)	D

Explanation of Responses:

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

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

Remarks:

	/s/ Jake C. Blavat, Attorney-in-Fact	10/14/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Alliant Energy (LNT) disclose in this Form 4?

A director acquired 871.771 deferred common stock units on 10/10/2025, coded as A.

How do the deferred common stock units settle for LNT?

Per the filing, units are settled in shares of common stock upon the director’s termination of service.

What is the exercise price of the derivative security reported?

The conversion/exercise price is $0 for the deferred common stock units.

What price is shown for the derivative security on the transaction date?

The filing lists a derivative security price of $67.75.

How many derivative units does the director own after the transaction?

The director beneficially owns 17,704.737 deferred common stock units after the reported acquisition.

Is the ownership listed as direct or indirect?

The ownership form is reported as Direct (D).

Does the total include dividend-related adjustments?

Yes. The filing notes it includes adjustments for accrued dividends pursuant to a dividend reinvestment transaction.