INDENTURE Dated as of June 6, 2024 Among ALLIANT ENERGY FINANCE, LLC, as Issuer, ALLIANT ENERGY CORPORATION, as Guarantor and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee 5.400% SENIOR NOTES DUE 2027Indenture • June 6th, 2024 • Alliant Energy Corp • Electric & other services combined • New York
Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the Unrestricted Definitive Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.
