Alliant Energy VP granted 1,004 stock units

Alliant Energy Corp vice president Rebecca C. Valcq received a grant of 1,004 restricted stock units (RSUs) of common stock as a non-cash award.

Rhea-AI Filing Summary

Alliant Energy Corp vice president Rebecca C. Valcq received a grant of 1,004 restricted stock units (RSUs) of common stock as a non-cash award. The RSUs convert to common shares on a one-to-one basis when they vest on December 31, 2028. Following this grant, her directly owned common stock amount reported in this filing is 2,773 shares.

Insider Trade Summary

Grant/Award: 1,004 shares

Grant/Award 1 txn

Insider Valcq Rebecca C.

Role Vice President

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,004	$0.00	$0.00

Holdings After Transaction: Common Stock — 2,773 shares (Direct)

Footnotes (1)

1. F1. 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.

FAQ

What insider transaction did Alliant Energy (LNT) report for Rebecca C. Valcq?

Alliant Energy reported that vice president Rebecca C. Valcq acquired 1,004 restricted stock units. These RSUs are a stock-based award that convert into common shares on a one-to-one basis when they vest on December 31, 2028.

Was the Alliant Energy (LNT) insider award to Rebecca C. Valcq a cash purchase?

No, the award was not a cash purchase. The Form 4 shows a grant of 1,004 restricted stock units at a price of $0.0000 per unit, indicating a non-cash equity award rather than an open-market stock buy.

When do Rebecca C. Valcq’s Alliant Energy (LNT) RSUs vest?

The 1,004 restricted stock units granted to Rebecca C. Valcq vest on December 31, 2028. At that time, each RSU is scheduled to convert into one share of Alliant Energy common stock, according to the Form 4 footnote.

How many Alliant Energy (LNT) shares does Rebecca C. Valcq hold after this Form 4 transaction?

After the reported transaction, Rebecca C. Valcq’s total directly owned common stock reported in the filing is 2,773 shares. This reflects the additional 1,004 restricted stock units awarded in the most recent grant transaction.

What does transaction code “A” mean in the Alliant Energy (LNT) Form 4 for Rebecca C. Valcq?

Transaction code “A” on the Form 4 indicates a grant, award, or other acquisition. In this case, it reflects the issuance of 1,004 restricted stock units to vice president Rebecca C. Valcq as part of her equity compensation.

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Accepted by SEC EDGAR 02/23/2026 - 07:14 PM 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^*

Valcq Rebecca C.

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
02/19/2026

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
Common Stock	02/19/2026		A		1,004(1)	A	$0	2,773	D

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. 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.

Remarks:

	/s/ Jake C. Blavat, Attorney-in-Fact	02/23/2026
	** 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.