# EDGAR Filing Document

**Accession Number:** 0001541185
**File Stem:** 0000352541-23-000018
**Filing Date:** 2023-2
**Character Count:** 6225
**Document Hash:** 0c6960e868e1b0442799b58f6587ab9f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000352541-23-000018.hdr.sgml**: 20230227

**ACCESSION NUMBER**: 0000352541-23-000018

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20230227

**FILED AS OF DATE**: 20230227

**DATE AS OF CHANGE**: 20230227

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Barton Lisa M
- **CENTRAL INDEX KEY:** 0001541185

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-09894
- **FILM NUMBER:** 23678032

**MAIL ADDRESS:**
- **STREET 1:** AMERICAN ELECTRIC POWER COMPANY, INC.
- **STREET 2:** 1 RIVERSIDE PLAZA
- **CITY:** COLUMBUS
- **STATE:** OH
- **ZIP:** 43215
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ALLIANT ENERGY CORP
- **CENTRAL INDEX KEY:** 0000352541
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC & OTHER SERVICES COMBINED [4931]
- **IRS NUMBER:** 391380265
- **STATE OF INCORPORATION:** WI
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 4902 NORTH BILTMORE LANE
- **STREET 2:** SUITE 1000
- **CITY:** MADISON
- **STATE:** WI
- **ZIP:** 53718-2148
- **BUSINESS PHONE:** 608-458-3311

**MAIL ADDRESS:**
- **STREET 1:** 4902 NORTH BILTMORE LANE
- **STREET 2:** SUITE 1000
- **CITY:** MADISON
- **STATE:** WI
- **ZIP:** 53718-2148

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** INTERSTATE ENERGY CORP
- **DATE OF NAME CHANGE:** 19980427

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WPL HOLDINGS INC
- **DATE OF NAME CHANGE:** 19920703

## Ex-24

```
<pre>
POWER OF ATTORNEY

  KNOW ALL PERSONS BY THESE PRESENTS, that I appoint each of Omar N. Chaudhary, Amy L. Cralam, and Jake C. Blavat as my true and lawful agents and attorneys-in-fact with respect to all matters arising in connection with the my reporting obligations under Section 16(a) of the Securities Exchange Act of 1934 (the "Exchange Act") as amended, and related rules and regulations, with full power and authority to execute and deliver for and on my behalf all Securities and Exchange Commission Forms 3, 4, 5, Form ID, and other documents in connection therewith regarding Alliant Energy Corporation, Interstate Power and Light Company, and Wisconsin Power and Light Company (collectively, the "Company") securities, as each of said agents and attorneys-in-fact may deem advisable.  I hereby give each of the named agents and attorneys-in-fact full power and authority to act in the premises, and hereby ratifies and confirms all that each of said agents and attorneys-in-fact may do by virtue hereof.

  I acknowledge that each attorney-in-fact, in serving in such capacity at my request, is not assuming any of my responsibilities to comply with the Exchange Act.  I agree to defend and hold harmless each attorney-in-fact from and against any and all loss, damage or liability that such attorney-in-fact may sustain as a result of any action taken in good faith hereunder.

  This Power of Attorney shall remain in full force and effect until I am no longer required to file documents with respect to my holdings of and transactions in securities issued by the Company, unless earlier revoked by me in writing or by executing a new Power of Attorney.

    IN WITNESS WHEREOF, I have executed this Power of Attorney on this 9day of February, 2023.

                            /s/ Lisa M. Barton

        Exhibit 24

</pre>
```

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

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] 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**<sup>*</sup><br>Barton Lisa M<br><sub>(Last) (First) (Middle)</sub><br>C/O ALLIANT ENERGY CORPORATION<br>4902 N. BILTMORE LANE<br><sub>(Street)</sub><br>MADISON, WI 53718<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>ALLIANT ENERGY CORP [ LNT ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2023-02-27 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_President and COO_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

**Signature:** /s/ Jake C. Blavat  
**Date:** 2023-02-27

### Remarks:

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.**