Alliant Energy CFO reports small stock sale

ALLIANT ENERGY CORP EVP and CFO Robert J. Durian reported a small sale of common stock.

Rhea-AI Filing Summary

ALLIANT ENERGY CORP EVP and CFO Robert J. Durian reported a small sale of common stock. On 2026-08-10, he sold 0.0970 shares of Alliant Energy common stock at $68.60 per share, with the reported post-transaction direct holding at 158,145.9390 shares, including adjustments for accrued dividends through a dividend reinvestment transaction exempt under Rule 16a-11. In addition, he reported indirect ownership of 5,649.8780 shares held through a 401(k) plan as of the filing date.

Insider Trade Summary

Net Seller: 0.097 shares

Net Sell 2 txns

Insider DURIAN ROBERT J

Role EVP and CFO

Sold 0.097 shs ($6.65)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	0.097	$68.60	$6.65
holding	Common Stock F2	--	--	--

Holdings After Transaction: Common Stock — 158,145.939 shares (Direct); Common Stock — 5,649.878 shares (Indirect, By 401(k) Plan)

Footnotes (2)

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

Key Figures

Shares sold: 0.0970 shares Sale price: $68.60 per share Direct holdings after transaction: 158,145.9390 shares +1 more

4 metrics

Shares sold 0.0970 shares Common stock sale on 2026-08-10

Sale price $68.60 per share Price for 0.0970 shares of common stock sold

Direct holdings after transaction 158,145.9390 shares Direct ownership of Alliant Energy common stock following the reported sale

Indirect 401(k) holdings 5,649.8780 shares Alliant Energy common stock held indirectly by 401(k) plan as of filing date

Key Terms

dividend reinvestment transaction, Section 16, Rule 16a-11, 401(k) Plan

4 terms

dividend reinvestment transaction financial

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

A dividend reinvestment transaction is when an investor uses cash dividends paid by a company to automatically buy more of that company's shares instead of taking the money as cash. Like choosing to roll interest back into a savings account, it increases your share count over time and can speed up growth through compounding, so investors care because it changes ownership stake, long‑term returns, and sometimes tax or record‑keeping implications.

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

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

401(k) Plan financial

"Reflects 401(k) holdings as of this filing date"

A 401(k) plan is a workplace retirement account that lets employees set aside part of their pay into a tax-advantaged savings pot, often with employers adding matching contributions — like a workplace piggy bank for future income. It matters to investors because the amount people save and how employers fund these plans influence consumer spending, corporate payroll costs and the flow of money into financial markets, which can affect stock prices and company valuations.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Alliant Energy (LNT) CFO Robert J. Durian report in this Form 4?

Robert J. Durian reported a small sale of 0.0970 shares of Alliant Energy common stock at $68.60 per share on 2026-08-10, with updated direct and 401(k) holdings disclosed.

How many Alliant Energy (LNT) shares does Robert J. Durian hold after this transaction?

After the reported activity, Robert J. Durian holds 158,145.9390 shares of Alliant Energy common stock directly and 5,649.8780 shares indirectly through a 401(k) plan as of the filing date.

What price did the Alliant Energy (LNT) CFO receive for the shares sold?

The reported sale by the Alliant Energy CFO was for 0.0970 shares of common stock at a price of $68.60 per share on 2026-08-10, as disclosed in the Form 4.

Does the Alliant Energy (LNT) Form 4 mention dividend reinvestment adjustments?

Yes. The Form 4 notes that the post-transaction share amount includes adjustments for accrued dividends, related to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11.

How are Alliant Energy (LNT) shares held in the CFO’s 401(k) reported?

The filing shows 5,649.8780 shares of Alliant Energy common stock held indirectly by a 401(k) plan, with the footnote stating these holdings are reported as of the filing date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/12/2026 - 04:16 PM EDT Learn about SEC filing dates

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^*

DURIAN ROBERT J

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/10/2026

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
Common Stock	08/10/2026		S		0.097	D	$68.6	158,145.939(1)	D
Common Stock								5,649.878(2)	I	By 401(k) Plan

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

Explanation of Responses:

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

2. Reflects 401(k) holdings as of this filing date.

Remarks:

	/s/ Omar N. Chaudhary, Attorney-in-Fact	08/12/2026
	** 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)