Director at Alliant Energy (LNT) granted 875 Deferred Common Stock Units as compensation

Rhea-AI Filing Summary

Garcia Michael Dennis reported acquisition or exercise transactions in this Form 4 filing.

ALLIANT ENERGY CORP director Michael Dennis Garcia received a grant of 875.513 Deferred Common Stock Units. These units relate to the company’s common stock and were valued at $73.10 per unit on the grant date. After this award, he holds 25,762.222 deferred units in total. The units will be settled in shares of common stock when his service as a director ends, and the balance includes adjustments for accrued dividends through a dividend reinvestment mechanism.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Garcia Michael Dennis

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Deferred Common Stock Units	875.513	$73.10	$64K

Holdings After Transaction: Deferred Common Stock Units — 25,762.222 shares (Direct)

Footnotes (1)

1. Units are to be settled in shares of common stock upon the reporting person's termination of services as a director. Includes adjustments for accrued dividends, pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11.

Key Figures

Deferred units granted: 875.513 units Grant valuation price: $73.10 per unit Total deferred units after grant: 25,762.222 units +2 more

5 metrics

Deferred units granted 875.513 units Grant of Deferred Common Stock Units on 2026-04-10

Grant valuation price $73.10 per unit Reference price for Deferred Common Stock Units grant

Total deferred units after grant 25,762.222 units Holdings following the reported Form 4 transaction

Underlying security 875.513 common shares Underlying common stock related to the deferred units

Conversion price $0.00 Deferred units convert to common stock without exercise price

Key Terms

Deferred Common Stock Units, dividend reinvestment transaction, Section 16, Rule 16a-11

4 terms

Deferred Common Stock Units financial

"security_title: "Deferred Common Stock Units""

Deferred common stock units are promises to deliver company shares or cash tied to the company’s stock value at a later date, typically used as part of employee or executive pay. Think of them like a paycheck you elect to receive in company stock at a future date; they can affect the number of shares outstanding and company expenses, so investors watch them for potential dilution and to understand management’s incentives.

dividend reinvestment transaction financial

"Includes adjustments for accrued dividends, pursuant to a dividend reinvestment transaction"

Section 16 regulatory

"dividend reinvestment transaction exempt from Section 16 under Rule 16a-11"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

Rule 16a-11 regulatory

"dividend reinvestment transaction exempt from Section 16 under Rule 16a-11"

Form 4 Insider Transactions: What Each Field Means →

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Garcia Michael Dennis

(Last) (First) (Middle)

C/O ALLIANT ENERGY CORPORATION

4902 N. BILTMORE LANE

(Street)

MADISON WISCONSIN 53718

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/10/2026

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

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

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

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	04/10/2026	04/10/2026	A		875.513		(1)	(1)	Common Stock	875.513	$73.1	25,762.222(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/ Omar N. Chaudhary, Attorney-in-Fact	04/14/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did ALLIANT ENERGY CORP (LNT) director Michael Dennis Garcia report on this Form 4?

He reported receiving 875.513 Deferred Common Stock Units tied to ALLIANT ENERGY CORP common stock. These units represent a compensation-related award for board service rather than an open-market stock purchase or sale, and increase his deferred equity-based holdings in the company.

How many ALLIANT ENERGY CORP (LNT) deferred units does Garcia hold after this transaction?

After the award, Garcia holds a total of 25,762.222 Deferred Common Stock Units. This figure reflects his cumulative deferred equity balance as a director, including the new grant and prior units adjusted for dividend-related reinvestment transactions under the company’s compensation and reinvestment arrangements.

What is the nature of the 875.513 Deferred Common Stock Units granted to Garcia at ALLIANT ENERGY CORP (LNT)?

The 875.513 units are Deferred Common Stock Units that track ALLIANT ENERGY CORP common stock. They are classified as a grant or award acquisition, not an open-market trade, and are part of director compensation rather than a discretionary investment decision in the public market.

When will Garcia’s Deferred Common Stock Units in ALLIANT ENERGY CORP (LNT) be settled into shares?

The units are scheduled to be settled in shares of common stock upon Garcia’s termination of services as a director. Until that termination event occurs, the units remain deferred and are not delivered as actual shares, according to the filing’s footnote disclosure.

How were dividends treated in Garcia’s Deferred Common Stock Units at ALLIANT ENERGY CORP (LNT)?

The reported holdings include adjustments for accrued dividends through a dividend reinvestment transaction. This reinvestment is described as exempt from Section 16 under Rule 16a-11, meaning dividends effectively increase the number of deferred units instead of being paid out in cash directly.