01—Abstract
Summary
Summary of the 8-K filed December 16, 2025. Cited figures are marked; the original filing is the authoritative source.
Alliant Energy Corporation, Interstate Power and Light Company, and Wisconsin Power and Light Company jointly filed this Form 8-K reporting leadership changes at the utility group under Item 5.02.
David A. de Leon, President of Wisconsin Power and Light Company (WPL) and Senior Vice President of Alliant Energy Corporation and Interstate Power and Light Company (IPL), informed the Company on December 10, 2025 that he intends to retire from all his positions 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 as President of WPL effective January 5, 2026.
She will also serve as Vice President of Alliant Energy and IPL effective the same date. Ms. Valcq, 50, has been Assistant Vice President of the Company since 2024. From 2019 to 2024 she chaired the Public Service Commission of Wisconsin, overseeing regulation of the state's more than 1,000 water, electric and gas utilities, and she also led the State of Wisconsin's Energy Office, Broadband Office and Office of Energy Innovation.
Before that she practiced energy, environmental and regulatory law as a law firm partner and served as in-house counsel at a utility. For investors, the filing is a management succession update rather than a financial disclosure. It signals a planned transition at WPL, with a regulatory-experienced executive taking the top role and the outgoing executive remaining in a senior role through mid-2026.
02—Key points
Key Highlights
- David A. de Leon, President of WPL and Senior Vice President of Alliant Energy and IPL, intends to retire after 39 years of service.
- De Leon will remain Senior Vice President of Alliant Energy, IPL and WPL from January 5, 2026 until his retirement on or about July 1, 2026.
- Rebecca Cameron Valcq was appointed President of WPL effective January 5, 2026, by WPL's Board of Directors on December 10, 2025.
- Valcq will also serve as Vice President of Alliant Energy and IPL effective January 5, 2026.
- Valcq, 50, has been Assistant Vice President of the Company since 2024.
- Valcq previously chaired the Public Service Commission of Wisconsin from 2019 to 2024, overseeing more than 1,000 water, electric and gas utilities.
03—Questions
Frequently Asked Questions
Why is David de Leon leaving his role?
The filing states that de Leon informed the Company on December 10, 2025 that he intends to retire from all his positions after 39 years of service. It does not give further reasons.
When does the leadership transition take effect?
Rebecca Cameron Valcq becomes President of WPL and Vice President of Alliant Energy and IPL effective January 5, 2026. De Leon remains Senior Vice President of all three entities from that date until his retirement on or about July 1, 2026.
What is Rebecca Valcq's background?
Valcq, 50, has been Assistant Vice President of the Company since 2024. From 2019 to 2024 she chaired the Public Service Commission of Wisconsin, and she also led the State of Wisconsin's Energy Office, Broadband Office and Office of Energy Innovation. Earlier she practiced energy, environmental and regulatory law as a law firm partner and was in-house counsel at a utility company.
Does this filing include financial results or guidance?
No. The filing addresses only officer departure and appointment matters under Item 5.02 and does not report financial results, guidance or compensation terms.
04—Continue