# Alliant Energy Corp (LNT)

> Cited company facts from SEC filings, by Steadybase. Web page: https://steadybase.io/company/alliant-energy-corp/ JSON: https://steadybase.io/company/alliant-energy-corp.json Checked Nov 10, 2026. Latest filing read: May 1, 2026.

## Company

- Legal name: ALLIANT ENERGY CORP
- Ticker: LNT (Nasdaq)
- SEC CIK: 0000352541
- Industry: Electric & Other Services Combined (SIC 4931)
- Headquarters: Madison, WI
- Fiscal year ends: December 31
- SEC filer category: Large accelerated filer
- Website: alliantenergy.com
- LinkedIn: https://www.linkedin.com/company/alliant-energy
- Next earnings date: Jan 29, 2027 (estimated from past 8-K timing)

## Key facts

- Revenue: $4.4B for the fiscal year ended Dec 31, 2025 (10-K filed Feb 20, 2026). Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000007/0000352541-26-000007-index.html
- Operating income: $1.0B for the fiscal year ended Dec 31, 2025 (10-K filed Feb 20, 2026). Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000007/0000352541-26-000007-index.html
- Net income: $810.0M for the fiscal year ended Dec 31, 2025 (10-K filed Feb 20, 2026). Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000007/0000352541-26-000007-index.html
- Employees: 2,948 as of Dec 31, 2025, as reported in an SEC filing. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000007/lnt-20251231.htm
- Shares outstanding: 258,277,037 as of Mar 31, 2026 (10-Q filed May 1, 2026). Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000033/0000352541-26-000033-index.html
- Auditor: Deloitte & Touche LLP, Milwaukee, Wisconsin, named in the latest 10-K. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000007/lnt-20251231.htm

## Business

Alliant Energy maintains its principal executive offices in Madison, Wisconsin. Alliant Energy operates as a regulated investor-owned public utility holding company, and its purpose-driven strategy is to serve its customers and build stronger communities. Alliant Energy’s primary focus is to provide regulated electric and natural gas service to approximately 1,010,000 electric and approximately 435,000 natural gas customers in the Midwest through its two public utility subsidiaries, IPL and WPL.

Source: Item 1. Business, https://www.sec.gov/Archives/edgar/data/352541/000035254126000007/lnt-20251231.htm

## Annual results

| Fiscal year ended | Revenue | Operating income | Net income |
|---|---|---|---|
| Dec 31, 2025 | $4.4B | $1.0B | $810.0M |
| Dec 31, 2024 | $4.0B | $886.0M | $690.0M |
| Dec 31, 2023 | $4.0B | $943.0M | $703.0M |
| Dec 31, 2022 | $4.2B | $928.0M | $686.0M |
| Dec 31, 2021 | $3.7B | $795.0M | $674.0M |

Each figure comes from the annual report for that year. Filing links for every figure: https://steadybase.io/company/alliant-energy-corp.json

## Officers and directors

- Lisa Barton, Alliant Energy President and CEO. Source: 8-K filed Oct 29, 2026, https://www.sec.gov/Archives/edgar/data/352541/000035254126000045/lnt102920268-kex991.htm
- Lisa M. Barton, President and CEO. LinkedIn: https://linkedin.com/in/lisambarton1. Source: Form 4 filed Feb 23, 2026, https://www.sec.gov/Archives/edgar/data/352541/000154118526000004/0001541185-26-000004-index.htm
- Robert J. Durian, EVP and CFO. LinkedIn: https://linkedin.com/in/robert-durian-94627291. Source: Form 4 filed Aug 12, 2026, https://www.sec.gov/Archives/edgar/data/352541/000151278926000003/0001512789-26-000003-index.htm
- Antonio P. Smyth, Executive Vice President. LinkedIn: https://linkedin.com/in/antonio-smyth-415967236. Source: Form 4 filed Apr 16, 2026, https://www.sec.gov/Archives/edgar/data/352541/000197312026000003/0001973120-26-000003-index.htm
- Dylan Syse, CAO and Controller. LinkedIn: https://linkedin.com/in/dylan-syse-cpa-7a848833. Source: Form 4 filed Feb 23, 2026, https://www.sec.gov/Archives/edgar/data/352541/000205813126000002/0002058131-26-000002-index.htm
- Raja Sundararajan, Executive Vice President. Source: Form 4 filed Feb 23, 2026, https://www.sec.gov/Archives/edgar/data/352541/000193652026000001/0001936520-26-000001-index.htm
- Rebecca C. Valcq, Vice President. Source: 4/A filed Mar 19, 2026, https://www.sec.gov/Archives/edgar/data/352541/000210547026000005/0002105470-26-000005-index.htm
- Leon David A. de, Senior Vice President. Source: Form 4 filed Feb 23, 2026, https://www.sec.gov/Archives/edgar/data/352541/000176320126000001/0001763201-26-000001-index.htm
- Mayuri Farlinger, Vice President. LinkedIn: https://linkedin.com/in/mayuri-farlinger-b11b3747. Source: Form 4 filed Feb 23, 2026, https://www.sec.gov/Archives/edgar/data/352541/000202295926000001/0002022959-26-000001-index.htm
- Ignacio Cortina, Board member (per proxy). Source: DEF 14A filed Mar 31, 2026, https://www.sec.gov/Archives/edgar/data/352541/000035254126000025/lnt-20260330.htm
- Manu Asthana, Board member (per proxy). Source: DEF 14A filed Mar 31, 2026, https://www.sec.gov/Archives/edgar/data/352541/000035254126000025/lnt-20260330.htm
- Patrick Allen, Board member (per proxy). Source: DEF 14A filed Mar 31, 2026, https://www.sec.gov/Archives/edgar/data/352541/000035254126000025/lnt-20260330.htm

## Recent 8-K events

- Oct 30, 2026: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000045/lnt-20261029.htm
- Oct 28, 2026: Item 1.01, Entry into a material definitive agreement; Item 2.03, Creation of a direct financial obligation; Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/352541/000119312526435177/d160574d8k.htm
- Aug 21, 2026: Item 8.01, Other events; Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/352541/000119312526360020/d440334d8k.htm
- Jul 31, 2026: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000042/lnt-20260730.htm
- May 21, 2026: Item 5.07, Submission of matters to a vote of security holders. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000036/lnt-20260520.htm
- May 1, 2026: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000030/lnt-20260430.htm
- Mar 19, 2026: Item 1.01, Entry into a material definitive agreement; Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/352541/000119312526116244/d131241d8k.htm
- Mar 4, 2026: Item 1.01, Entry into a material definitive agreement; Item 2.03, Creation of a direct financial obligation; Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000009/lnt-20260302.htm
- Feb 20, 2026: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000005/lnt-20260219.htm
- Jan 8, 2026: Item 5.02, Departure or appointment of directors or officers; compensation. Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000003/lnt-20260105.htm

## Insider trades (Form 4)

- Aug 10, 2026: Robert J. Durian (EVP and CFO) sold 0.1 shares, about $7. Source: https://www.sec.gov/Archives/edgar/data/352541/000151278926000003/0001512789-26-000003-index.htm

## What management said

- "We delivered another solid quarter of operating performance and our full-year earnings expectation has been narrowed to within the top half of the original 2026 ongoing EPS guidance range" Lisa Barton, Alliant Energy President and CEO (8-K filed Oct 29, 2026). Source: https://www.sec.gov/Archives/edgar/data/352541/000035254126000045/lnt102920268-kex991.htm

## Latest filings

- 8-K filed Oct 30, 2026: https://www.sec.gov/Archives/edgar/data/352541/000035254126000045/lnt-20261029.htm
- 10-K filed Feb 20, 2026: https://www.sec.gov/Archives/edgar/data/352541/000035254126000007/lnt-20251231.htm
- 10-Q filed Oct 30, 2026: https://www.sec.gov/Archives/edgar/data/352541/000035254126000047/lnt-20260930.htm
- DEF 14A filed Mar 31, 2026: https://www.sec.gov/Archives/edgar/data/352541/000035254126000025/lnt-20260330.htm

## About this data

SEC EDGAR filings, read by Steadybase. Every value links to the filing it came from.
Steadybase covers US-headquartered public companies that file with the SEC. API and MCP access: https://steadybase.io/docs/