LNT SEC filings last scanned 22 Aug 2026, 16:55 UTC
CEO Timeline
Lisa M. BartonCurrent
Jan 2024 — Present(2y 8mo)
Lisa M. Barton was appointed President and Chief Executive Officer of Alliant Energy Corporation, effective January 1, 2024, succeeding John O. Larsen who transitioned to Executive Chairman.
3 source filings — click to expand
John O. Larsen
Jul 2019 — Jan 2024(4y 6mo)
John O. Larsen was appointed President and Chief Executive Officer of Alliant Energy Corporation, effective July 1, 2019, succeeding Patricia L. Kampling.
transitioned to Executive Chairman role
5 source filings — click to expand
Patricia L. Kampling
Apr 2012 — Jul 2019(7y 3mo)
Patricia L. Kampling was appointed President and Chief Executive Officer of Alliant Energy Corporation, succeeding William D. Harvey, effective April 1, 2012.
planned retirement
4 source filings — click to expand
William D. Harvey
Jul 2005 — Mar 2012(6y 8mo)
William D. Harvey was appointed Chief Executive Officer of Alliant Energy Corporation, effective July 1, 2005, succeeding Erroll B. Davis, Jr.