Board of directors (9)
Directors with a Section 16 filing in the last 13 months. “Since” is the first filing as a director; SEC data sets start in 2016.
Executive officers (8)
Company facts
- Chair
- —
- In S&P 500 since
- Jul 2016
- Incorporated in
- WI
- Fiscal year ends
- December
- SEC industry
- Electric & Other Services Combined
- SEC filings
- EDGAR
Major holders (5% or more)
Latest Schedule 13D/13G filing per holder. Holders that reported falling below 5% are not shown. Index funds usually report once a year.
No 5% holder filings parsed yet for this company.
Insider trades
Open-market purchases and sales reported on Form 4. Grants, option exercises and tax withholding are excluded.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 10, 2026 | Robert J. Durian EVP and CFO | Sale | 0 | $68.60 | $7 |
| Feb 20, 2024 | Lisa M. Barton President and CEO | Buy | 1,100 | $48.56 | $53K |
| Feb 20, 2024 | Raja Sundararajan Executive Vice President | Buy | 500 | $48.26 | $24K |
| Jun 9, 2022 | Nancy Joy Falotico Director | Buy | 1,200 | $61.00 | $73K |
| Feb 28, 2022 | James H. Gallegos EVP, Gen Cnsl and Corp Sec | Sale | 10,000 | $58.04 | $580K |
| Sep 3, 2019 | David A. De Leon Senior Vice President | Buy | 941 | $53.15 | $50K |
| Aug 29, 2019 | James H. Gallegos EVP, Gen Cnsl and Corp Sec | Sale | 5,000 | $52.29 | $261K |
| Jun 14, 2019 | James H. Gallegos EVP, Gen Cnsl and Corp Sec | Sale | 5,000 | $50.00 | $250K |
| Jun 3, 2019 | Patricia L. Kampling Chairman and CEO | Sale | 10,000 | $47.55 | $476K |
| May 3, 2019 | James H. Gallegos EVP, Gen Cnsl and Corp Sec | Sale | 5,000 | $47.50 | $238K |
| May 1, 2019 | Patricia L. Kampling Chairman and CEO | Sale | 10,000 | $46.98 | $470K |
| Sep 13, 2018 | Deborah B. Dunie Director | Buy | 1,250 | $43.80 | $55K |
| Mar 15, 2018 | James H. Gallegos EVP, Gen Cnsl and Corp Sec | Sale | 5,000 | $39.80 | $199K |
| Sep 7, 2017 | Wayne A. Reschke Senior Vice President | Sale | 2,000 | $42.83 | $86K |
| May 23, 2017 | James H. Gallegos EVP, Gen Cnsl and Corp Sec | Sale | 5,000 | $41.25 | $206K |
| May 19, 2017 | Deborah B. Dunie Director | Buy | 3,700 | $39.61 | $147K |
| Nov 7, 2016 | Deborah B. Dunie Director | Buy | 1,350 | $37.24 | $50K |
| Aug 9, 2016 | Patricia L. Kampling Chairman and CEO | Sale | 0 | $39.30 | $13 |
| Jul 11, 2016 | James H. Gallegos EVP, Gen Cnsl and Corp Sec | Sale | 5,000 | $40.29 | $201K |
| May 10, 2016 | Deborah B. Dunie Director | Buy | 1,000 | $73.11 | $73K |
| Mar 3, 2016 | Thomas L. Hanson Senior Vice President, CFO | Sale | 7,500 | $68.15 | $511K |
| Feb 25, 2016 | John O. Larsen Executive Chairman | Sale | 3,000 | $69.94 | $210K |
Board and executive changes
Every 8-K with Item 5.02 (departure, election or appointment of directors and officers). The text is the first paragraph of the item.
- Jan 8, 2026
On January 5, 2026, the Boards of Directors (the “Boards”) of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company and Wisconsin Power and Light Company increased the number of directors on the Boards to 11 and appointed Manu Asthana as a member of the Boards effective February 23, 2026. Mr. Asthana, 52, was President and Chief Executive Officer of PJM Interconnection from 2020 to 2025. PJM Interconnection oversees the largest power grid in North America and one of the largest electricity markets in the world, serving 67 million people in 13 states and the District of Columbia. Prior to that, he held roles of increasing importance with accountabilities related to financial performance, risk, and operations at public and private utility companies. Mr.
Read the 8-K filing - Dec 16, 2025
On December 10, 2025, David A. de Leon, President of Wisconsin Power and Light Company (WPL) and Senior Vice President of Alliant Energy Corporation (Alliant Energy) and Interstate Power and Light Company (IPL, and together with Alliant Energy and WPL, the Company), informed the Company that he intends to retire from all his positions at the Company after 39 years of service. Effective January 5, 2026, he will continue as Senior Vice President of Alliant Energy, IPL and WPL until his retirement on or about July 1, 2026. On December 10, 2025, the Board of Directors of WPL, a wholly-owned subsidiary of Alliant Energy, appointed Rebecca Cameron Valcq to the position of President of WPL effective January 5, 2026. Ms. Valcq will also serve as Vice President of Alliant Energy and IPL effective January 5, 2026. Ms. Valcq, 50, has served as Assistant Vice President of the Company since 2024.
Read the 8-K filing - Mar 10, 2025
(b) On March 7, 2025, John O. Larsen informed the Boards of Directors (the Boards) of Alliant Energy Corporation (Alliant Energy), Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL, and together with Alliant Energy and IPL, the Companies) that he plans to retire as Chairman of the Board and as a member of the Boards when his term expires after the 2025 Annual Meeting of Shareowners. On March 7, 2025, the Boards designated Patrick E. Allen as Board Chair of the Companies effective after the 2025 Annual Meeting of Shareowners. Mr. Allen has served as a member of the Boards since 2011.
Read the 8-K filing - Feb 11, 2025
On February 7, 2025, the Boards of Directors (the Boards) of Alliant Energy Corporation (Alliant Energy), Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL, and together with Alliant Energy and IPL, the Companies), appointed Dylan Syse, 39, to the position of Chief Accounting Officer and Controller of the Companies effective March 2, 2025. Mr. Syse has served as Assistant Controller of the Companies since 2021, Manager – Accounting and Reporting from 2020-2021, Manager – Accounting from 2018-2020 and in various other accounting roles since joining the Companies in 2013. Mr. Syse’s compensation will consist of a salary and participation in the standard short-term and long-term incentive plans. There are no other arrangements or understandings related to his appointment to the role between Mr. Syse and any other persons. Mr.
Read the 8-K filing - Jul 15, 2024
On July 10, 2024, John O. Larsen, Executive Chairman and Chairman of the Board of Directors of Alliant Energy Corporation (Alliant Energy), Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL, and together with Alliant Energy and IPL, the Companies), informed the Board of Directors that he plans to retire from his executive position at the Companies effective on or before January 1, 2025. The Board of Directors confirmed him to the position of non-employee Chairman of the Board of the Companies effective upon his executive retirement. As non-employee Chairman of the Board, Mr. Larsen will receive compensation as a non-employee director in accordance with the non-employee director compensation practices described in Alliant Energy’s Definitive Proxy Statement filed with the Securities and Exchange Commission on April 2, 2024.
Read the 8-K filing - Mar 8, 2024
On March 7, 2024, the Boards of Directors (the “Boards”) of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company and Wisconsin Power and Light Company appointed Christie Raymond as a member of the Boards effective April 1, 2024. Ms. Raymond will stand for election at the Alliant Energy 2024 Annual Meeting of Shareowners as a nominee for director to serve until Alliant Energy’s 2025 Annual Meeting of Shareowners. Ms. Raymond, 54, has served as Senior Executive Vice President and Chief Marketing Officer at Kohl’s, a leading retailer, since August 2022. In her current role, she is responsible for Kohl’s marketing and customer service organizations, including the overall marketing strategy, brand and creative, media and personalization, credit and loyalty, customer insights and analytics, corporate communications, and philanthropic efforts.
Read the 8-K filing - Feb 13, 2024
On February 8, 2024, Terry L. Kouba, President of Interstate Power and Light Company (IPL) and Senior Vice President of Alliant Energy Corporation (Alliant Energy), and Wisconsin Power and Light Company (WPL, and together with Alliant Energy and IPL, the Company), informed the Board of Directors that he plans to retire effective May 1, 2024. On February 9, 2024, the Board of Directors of IPL, a wholly-owned subsidiary of Alliant Energy, appointed Mayuri N. Farlinger to the position of President of IPL effective May 1, 2024. She will continue to serve as Vice President of Alliant Energy and WPL. Ms. Farlinger, 41, has served as Vice President of the Company since January 2022.
Read the 8-K filing - Oct 26, 2023
On October 26, 2023, Alliant Energy Corporation (“Alliant Energy”) announced the appointment of Lisa M. Barton as President and Chief Executive Officer of Alliant Energy, effective January 1, 2024. Ms. Barton will continue to serve as Chief Executive Officer of Interstate Power and Light Company (“IPL”) and Wisconsin Power and Light Company (“WPL” and, together with Alliant Energy and IPL, the “Companies.”). Ms. Barton was also appointed as a member of the Board of Directors of the Companies as of January 1, 2024. Also effective January 1, 2024, John O. Larsen, Alliant Energy’s Board Chair and Chief Executive Officer, was elected Executive Chairman of the Companies and will remain an employee and member of the Board of Directors. Ms. Barton, 58, has served as President and Chief Operating Officer of Alliant Energy, and Chief Executive Officer of IPL and WPL, since February 2023.
Read the 8-K filing - Jul 14, 2023
(d) On July 12, 2023, the Boards of Directors (the “Boards”) of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company and Wisconsin Power and Light Company appointed Ignacio A. Cortina as a member of the Boards effective July 14, 2023. Mr. Cortina is expected to stand for election at the Alliant Energy 2024 Annual Meeting of Shareowners as a nominee for director to serve until the company’s 2026 Annual Meeting of Shareowners. Mr. Cortina, 51, has been Executive Vice President, Chief Legal Officer and Secretary of Oshkosh Corporation, a leading innovator of mission-critical vehicles and essential equipment, since February 2023. Mr. Cortina previously served as Executive Vice President, General Counsel and Secretary from 2016 to 2023. He has held various roles of increasing responsibility since joining Oshkosh Corporation in 2003.
Read the 8-K filing - Jan 13, 2023
(c) On January 13, 2023, Alliant Energy Corporation (“Alliant Energy”) announced the appointment of Lisa M. Barton, 57, as President and Chief Operating Officer of Alliant Energy, effective February 27, 2023. In addition, Interstate Power and Light Company (“IPL”) and Wisconsin Power and Light Company (“WPL”) announced the appointment of Ms. Barton as Chief Executive Officer of each of IPL and WPL, effective February 27, 2023. Mr. Larsen will remain as Chief Executive Officer of Alliant Energy and Chair of the Board of Alliant Energy, IPL and WPL. Prior to her appointment, Ms. Barton served as Executive Vice President and Chief Operating Officer of American Electric Power Company, Inc. (“AEP”) from January 2021 to November 2022, Executive Vice President — Utilities of AEP from January 2020 to December 2020, and Executive Vice President — Transmission of AEP from 2011 to 2019.
Read the 8-K filing - Jan 4, 2023
(b) On January 4, 2023, Dean Oestreich informed the Chair of the Boards of Directors (the “Boards”) of Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company that he plans to retire from the Boards effective February 11, 2023. (d) On January 4, 2023, the Boards of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company and Wisconsin Power and Light Company appointed Stephanie L. Cox as a member of the Boards effective February 11, 2023. Ms. Cox is expected to stand for election at the Alliant Energy 2023 Annual Meeting of Shareowners as a nominee for director to serve until the company’s 2024 Annual Meeting of Shareowners. Ms.
Read the 8-K filing - Feb 8, 2022
On February 4, 2022, James H. Gallegos notified the Chairman of the Board of Directors of Alliant Energy Corporation (“AEC”), Interstate Power and Light Company (“IPL”) and Wisconsin Power and Light Company (“WPL”) that he will leave the Company to assume a position at another publicly-traded company, and is therefore resigning from his position as Executive Vice President, General Counsel and Corporate Secretary of AEC, IPL and WPL, in each case effective on a date to be determined in March 2022.
Read the 8-K filing - Oct 28, 2021
(e) On October 26, 2021, the Compensation and Personnel Committee of the Board of Directors of Alliant Energy Corporation (the “Company”) approved an amended Key Executive Employment and Severance Agreement (each, a “KEESA”) for the chief executive officer and for the other named executive officers of the Company. The amended KEESAs will replace in full the existing KEESAs previously entered into with the Company’s named executive officers. Each KEESA provides certain severance payments and benefits if, within a period of up to two years after a change in control of the Company, the executive officer’s employment terminates as a result of: (a) termination by the Company, other than by reason of death or disability or for cause, or (b) termination by the officer for good reason.
Read the 8-K filing - Jul 15, 2021
(d) On July 14, 2021, the Boards of Directors of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company and Wisconsin Power and Light Company (the “Boards”) appointed N. Joy Falotico as a member of the Boards effective July 14, 2021. Ms. Falotico will stand for election at the Alliant Energy 2022 Annual Meeting of Shareowners as a nominee for director to serve until the company’s 2025 Annual Meeting of Shareowners. Ms. Falotico, 53, has served as President of Lincoln Motor Company since March 2018. She also served as Ford Motor Company’s chief marketing officer from March 2018 until January 2021 and has been a group vice president of Ford Motor Company since 2016. Ms. Falotico was named an Executive Vice President of Ford Motor Credit Company, a leading global automotive financial services provider, in 2012.
Read the 8-K filing - Jan 29, 2021
(b) On January 27, 2021, Jillian C. Evanko informed the Chair of the Boards of Directors (the “Boards”) of Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company that she resigned from the Boards and all committees of the Boards effective on January 27, 2021 in order to comply with the Boards’ policy on overboarding of directors. Jill is joining the board of directors of another publicly traded company effective January 27, 2021.
Read the 8-K filing
Show 9 older changes
- May 22, 2020
(e) At the Alliant Energy Corporation (the “Company”) annual meeting of shareowners held on May 21, 2020, the Company’s shareowners, upon the recommendation of the Company’s Board of Directors, approved the Alliant Energy Corporation 2020 Omnibus Incentive Plan (the “Omnibus Plan”). The Omnibus Plan replaces the Alliant Energy Corporation Amended and Restated 2010 Equity Incentive Plan, which expired on May 20, 2020. An aggregate of 9,000,000 shares of common stock of the Company are reserved for issuance under the Omnibus Plan, subject to adjustment as described in the Omnibus Plan. The Omnibus Plan, among other things, permits the Company to make awards of restricted stock, restricted stock units, shares, performance shares, performance units, stock options, and other stock or cash-based awards.
Read the 8-K filing - Dec 13, 2019
(d) On December 12, 2019, the Boards of Directors of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company and Wisconsin Power and Light Company (the “Boards”) appointed Michael D. Garcia as a member of the Boards effective January 1, 2020. Mr. Garcia will stand for election at the Alliant Energy 2020 Annual Meeting of Shareowners as a nominee for director to serve until the company’s 2023 Annual Meeting of Shareowners. Mr. Garcia, 55, is President of the Pulp and Paper Division of Domtar Corporation, which designs, manufactures, markets and distributes a wide variety of fiber-based products including communication papers, specialty and packaging papers and market pulp. He has served in this capacity since 2014. Prior to joining Domtar, Mr. Garcia was the chief executive officer at EVRAZ Highveld Steel & Vanadium Co. Mr.
Read the 8-K filing - Feb 13, 2019
On February 11, 2019, Patricia L. Kampling notified the Board of Directors that she will retire as Chief Executive Officer of Alliant Energy Corporation (“Alliant Energy”), and as a Director of Alliant Energy, Interstate Power and Light Company (“IPL”), and Wisconsin Power and Light Company (“WPL,” and together with Alliant Energy and IPL, the “Company”), in each case effective as of July 1, 2019. Ms. Kampling has been Chief Executive Officer of Alliant Energy since 2012. On February 13, 2019, the Board of Directors of the Company appointed John O. Larsen as President and Chief Executive Officer of Alliant Energy, effective as of July 1, 2019. Mr. Larsen, 55, currently serves as Chief Executive Officer of IPL and WPL and will remain in those positions. Mr. Larsen has been the President and Chief Operating Officer of Alliant Energy since January 2019. Mr.
Read the 8-K filing - Dec 13, 2018
(b)(c) On December 13, 2018, the Board of Directors (the “Board”) of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company (“IPL”) and Wisconsin Power and Light Company (“WPL,” and together with Alliant Energy and IP&L, the “Company”) made several executive officer appointments as part of its succession planning efforts. On December 13, 2018, the Board of Directors of Alliant Energy appointed John O. Larsen, 55, to the position of Chief Operating Officer of Alliant Energy effective January 1, 2019. In addition, the Boards of Directors of IPL and WPL appointed Mr. Larsen, as Chief Executive Officer of IPL and WPL effective January 1, 2019, replacing Patricia L. Kampling in those positions. Mr. Larsen was named President of Alliant Energy effective January 2018 and will continue to hold that position.
Read the 8-K filing - Jul 26, 2018
(b) On July 25, 2018, the Boards of Directors (the “Boards”) of Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company (collectively, the “Companies”) appointed Roger K. Newport as a member of the Boards effective July 25, 2018. Mr. Newport, 53, has served as Chief Executive Officer of AK Steel Holding Corporation since January 2016. Prior to that, Mr. Newport served as Executive Vice President, Finance and Chief Financial Officer since May 2015, as Senior Vice President, Finance and Chief Financial Officer since May 2014, and as Vice President, Finance and Chief Financial Officer since May 2012. Prior to that, Mr.
Read the 8-K filing - Mar 15, 2018
(b) On March 9, 2018, Michael L. Bennett informed the Chairman of the Boards of Directors (the “Boards”) of Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company that he retired from the Boards effective on March 9, 2018.
Read the 8-K filing - Dec 11, 2017
(b) (c) On December 7, 2017, the Board of Directors (the “Board”) of Alliant Energy Corporation (“AEC”) appointed John O. Larsen, 54, as President of AEC effective January 1, 2018. Mr. Larsen has served as Senior Vice President of AEC since February 2014. He previously served as Senior Vice President-Generation since January 2010. Mr. Larsen joined AEC in 1987 and has held various positions at AEC and its utility subsidiaries in the areas of generation, energy delivery and engineering. Effective January 1, 2018, Patricia L. Kampling will remain Chief Executive Officer and Chairman of the Board. As a result of Mr.
Read the 8-K filing - Aug 8, 2017
Results of Operations and Financial Condition. (b) On August 7, 2017, Wayne A. Reschke notified the Chairman of the Board of Directors of Alliant Energy Corporation (“AEC”), Interstate Power and Light Company (“IPL”) and Wisconsin Power and Light Company (“WPL”) that he will retire from his position as Senior Vice President of AEC, IPL and WPL effective on December 31, 2017.
Read the 8-K filing - Sep 23, 2016
(b) (c) On September 22, 2016, Thomas L. Hanson, Senior Vice President and Chief Financial Officer of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company (“IP&L”) and Wisconsin Power and Light Company (“WP&L,” and together with Alliant Energy and IP&L, the “Company”), informed the Board of Directors that he will resign as Chief Financial Officer of the Company effective December 1, 2016 and will remain with the Company as Senior Vice President until he retires effective December 31, 2016. The Board appointed Robert J. Durian, 46, as the Company’s Vice President, Chief Financial Officer and Treasurer effective December 1, 2016. Mr.
Read the 8-K filing
Proxy statements (DEF 14A): 2026 · 2025 · 2024 · 2023 · 2022 · 2021
Share price
Annual financials
From the company's 10-K XBRL data (SEC companyfacts).
| Fiscal year | Revenue | Net income | Margin | Diluted EPS | Total assets |
|---|---|---|---|---|---|
| FY2025 | $4.4B | $810.0M | 18.6% | $3.14 | $25.0B |
| FY2024 | $4.0B | $690.0M | 17.3% | $2.69 | $22.7B |
| FY2023 | $4.0B | $703.0M | 17.5% | $2.78 | $21.2B |
| FY2022 | $4.2B | $686.0M | 16.3% | $2.73 | $20.2B |
| FY2021 | $3.7B | $674.0M | 18.4% | $2.63 | $18.6B |
| FY2020 | $3.4B | $624.0M | 18.3% | $2.47 | $17.7B |
| FY2019 | $3.6B | $567.0M | 15.5% | $2.33 | $16.7B |
| FY2018 | $3.5B | $522.0M | 14.8% | $2.19 | $15.4B |
Former directors and officers (16)
People who stopped filing as an insider of this company. “Last filing” is the last Form 3/4/5, an upper bound on when they left.