Alliant Energy - Our Leadership

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Executive officers

John O. Larsen

Chair, President
and Chief Executive Officer

Robert J. Durian

Executive Vice President
and Chief Financial Officer

James H. Gallegos

Executive Vice President, General Counsel
and Corporate Secretary

JP Brummond

Vice President
Customer and Community Engagement

Diane Cooke

Diane Cooke

Vice President
Human Resources

Aimee Davis

Vice President
Communications and Marketing

David de Leon

President – Alliant Energy’s Wisconsin energy company
and Senior Vice President – Operations

Terry L. Kouba

President - Alliant Energy's Iowa energy company
and Senior Vice President - Operations

Linda K. Mattes

Vice President
Customer Operations

Joel J. Schmidt

Vice President
Business Development

Tom Tang

Vice President
and Chief Information Officer

Barbara Tormaschy

Vice President
and Treasurer

Board of Directors

John O. Larsen

Chair of the Board
Director since 2019

Patrick E. Allen

Director since 2011
Term Expires in 2023

Michael D. Garcia

Director since 2020
Term Expires in 2023

Singleton B. McAllister

Director since 2001
Term Expires in 2023

Roger K. Newport

Director since 2018
Term Expires in 2024

Dean C. Oestreich

Director since 2005
Term Expires in 2024

Thomas F. O’Toole

Director since 2015
Term expires in 2022

Carol P. Sanders

Director since 2005
Term Expires in 2024

Susan D. Whiting

Director since 2013
Term Expires in 2023

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