Alliant Energy Corporation (NASDAQ: LNT) today announced Patrick Allen has been named by the Board of Directors as incoming Independent Board Chair. This change becomes effective after the Company’s Annual Meeting of Shareowners currently planned for May 2025.

Allen will succeed John Larsen, who served as Chairman of the Board since 2019. Larsen retired from the company in his employee capacity as Executive Chair earlier this year after 36 years of service. He will end his board service in May 2025 at the completion of his current term.

“On behalf of the Board of Directors I want to congratulate Patrick on being named Independent Board Chair and thank John for his years of dedicated service and leadership,” said Carol Sanders, Lead Independent Director. “Patrick has consistently demonstrated exceptional strategic insight throughout his tenure on the Board. I am excited to see the positive impact he will continue to have in his new role as Board Chair."

Allen has been a Director of Alliant Energy’s Board since 2011. He served as Chief Financial Officer at Collins Aerospace from 2018 until his retirement in 2020. Prior to that, he was the Senior Vice President and Chief Financial Officer at Rockwell Collins, Inc. where he led the company’s finance activities, including financial planning, accounting, treasury, audit and tax from 2005 to 2018.

"We are delighted to welcome Patrick as our new Independent Board Chair,” said Lisa Barton, president and CEO of Alliant Energy. “Patrick's insight and leadership will strengthen our commitment to customers, innovation and responsible growth as we navigate the future of energy together."

“It is a great honor to take on the role of Independent Board Chair at Alliant Energy,” added Allen. “I look forward to working with Lisa, the executive team and my fellow Board members to help drive the company's strategy and deliver results to our investors, customers and employees.”

Before joining Rockwell Collins in 2001, Allen served in various roles at Rockwell International, including Vice President and Treasurer, Vice President of Financial Planning and Controller. Allen began his career as an auditor at Deloitte & Touche. He has also served on the Board of Triumph Group, Inc., an aerospace company, since 2023.

For more information, visit alliantenergy.com.

About Alliant Energy

Alliant Energy Corporation (NASDAQ: LNT) provides regulated energy service to approximately 1 million electric and 430,000 natural gas customers across Iowa and Wisconsin. Alliant Energy's mission is to deliver energy solutions and exceptional service customers and communities count on – safely, efficiently and responsibly. Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL) are Alliant Energy's two public energy companies. Alliant Energy is a component of Bloomberg’s Gender-Equality Index and the S&P 500. For more information, visit alliantenergy.com and follow Alliant Energy on LinkedIn, Facebook, Instagram and X.

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