ALLIANT ENERGY CORP
Close on Oct 19, 2026
- Market cap
- $17.44B
- P/E (TTM)
- 21.2
- Dividend yield
- 3.04%
About Alliant Energy
Electric & Other Services Combined, SIC 4931
Alliant Energy operates as a regulated public utility holding company delivering electric and natural gas utility services in the Midwestern United States. The company conducts its utility operations through two primary subsidiaries: Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL). Together, these segments generate, distribute, and transport electricity and natural gas. Beyond its core regulated utility services, the enterprise maintains non-utility holdings through Alliant Energy Finance (AEF), which manages investments in electric transmission, wind energy, supply chain and freight logistics, and development-ready industrial sites. Its customers include retail electric and natural gas users across residential and commercial sectors, wholesale clients like municipalities and rural electric cooperatives, and industrial customers spanning agriculture, manufacturing, chemical production, and data centers.
The company's principal executive offices are located in Madison, Wisconsin. Alliant Energy provides utility services across Iowa and Wisconsin, with additional wholesale electric sales extending into Illinois. Its utility infrastructure serves approximately 1,010,000 electric customers and 435,000 natural gas customers across the region, supported by a workforce of 2,948 employees. Generation assets are located across Iowa, Wisconsin, and Minnesota.
Summary of the business section of Alliant Energy's latest annual report, written by StockData.
Company profile
Company
- Legal name
- ALLIANT ENERGY CORP
- Founded
- 1981
- Headquarters
- Madison, WI
- Address
- 4902 North Biltmore Lane, Suite 1000 53718-2148
- Phone
- (608) 458-3311
- Website
- www.alliantenergy.com
- Employees
- 2,948, Dec 31, 2025
- Industry
- Electric & Other Services Combined
- Incorporated in
- Wisconsin
- Fiscal year ends
- December 31
- Auditor
- Deloitte & Touche LLP, Milwaukee, Wisconsin
Stock & identifiers
- Ticker
- LNT
- Exchange
- Nasdaq
- Shares outstanding
- 259M, Jun 30, 2026
- Public float
- $15.50B, Jun 30, 2025
- Filer category
- Large accelerated filer
- Stock splits
- 2-for-1, May 20, 2016; 2-for-1, Apr 20, 2016; 2-for-1, Sep 26, 1988
- SEC CIK
- 352541
- CUSIP
- 018802108
- ISIN
- US0188021085
- LEI
- 5493009ML300G373MZ12
- EIN
- 39-1380265
Executives and directors
Officers and directors who filed ownership reports (Forms 3, 4, 5) in the last two years
| Name | Position | Shares owned |
|---|---|---|
| Lisa M. Barton | President and CEO, Director | 106,519 |
| Robert J. Durian | EVP and CFO | 163,796 |
| Antonio P. Smyth | Executive Vice President | 20,678 |
| Rebecca C. Valcq | Vice President | 2,335 |
| Raja Sundararajan | Executive Vice President | 44,374 |
| Leon David A. de | Senior Vice President | 49,987 |
| Mayuri Farlinger | Vice President | 20,170 |
| Dylan Syse | CAO and Controller | 3,776 |
| Benjamin M. Bilitz | CAO and Controller | 19,420 |
| Patrick E. Allen | Director | 1,632 |
| Nancy Joy Falotico | Director | 1,210 |
| Manu Asthana | Director | 1,000 |
| Stephanie Cox | Director | 500 |
| Ignacio A. Cortina | Director | 100 |
| Roger K. Newport | Director | 1,000 |
| Michael Dennis Garcia | Director | 10 |
| Christie Raymond | Director | 250 |
| John O. Larsen | Director | 301,500 |
CEO pay and shareholder return
Pay versus performance table from the proxy statement
| Fiscal year | CEO total pay | CEO pay actually paid | Other executives (avg) | Value of $100 invested | Peer group |
|---|---|---|---|---|---|
| FY2025 Ms. Barton | $9.00M | $10.80M | $3.27M | $148 | $144 |
| FY2024 Ms. Barton | $6.97M | $8.54M | $3.22M | $130 | $129 |
| FY2023 Ms. Barton | $9.71M | $7.24M | $2.59M | $109 | $108 |
| FY2022 Ms. Barton | $7.29M | $5.36M | $1.56M | $114 | $118 |
| FY2021 Ms. Barton | $10.45M | $10.19M | $1.63M | $123 | $117 |
| FY2020 Ms. Barton | $11.02M | $5.99M | $1.64M | $97 | $99 |
“Actually paid” adjusts reported pay for changes in the value of equity awards. Shareholder return assumes $100 invested at the start of the measurement period, as disclosed by the company.
Employees
Headcount reported in annual reports
“Employees - At December 31, 2025, Alliant Energy, IPL and WPL had the following full- and part-time employees: … Alliant Energy 2,948 1,705 58%”
Corporate history
Events identified from SEC filings