MIDAMERICAN ENERGY COMPANY and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., as Trustee TWELFTH SUPPLEMENTAL INDENTURE Dated as of January 24, 2024 ESTABLISHING AND CREATING 5.300% FIRST MORTGAGE BONDS DUE 2055Supplemental Indenture • January 24th, 2024 • Midamerican Funding LLC • Electric services • New York
