INDENTURE Dated as of February 28, 2022 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 3.600% SENIOR NOTES DUE 2032Indenture • March 1st, 2022 • Alliant Energy Corp • Electric & other services combined • New York
Unrestricted Definitive Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.
