NOTICE TO THE HOLDERS OF COMMONWEALTH EDISON COMPANY FIRST MORTGAGE BONDS_051023

Notice is hereby given pursuant to the Mortgage dated July 1, 1923 of Commonwealth Edison Company (the "Company") to BNY Mellon Trust Company of Illinois, as trustee (the "Trustee") and D.G. Donovan, as co-trustee (the "Co-Trustee"), as amended and supplemented (the "Mortgage"), that the Trustee is resigning as trustee under the Mortgage and the Co-Trustee is resigning as co-trustee under the Mortgage, and the Company has appointed The Bank of New York Mellon Trust Company, National Association, as successor trustee. The resignation of BNY Mellon Trust Company of Illinois as trustee, the resignation of D.G. Donovan as co-trustee, and the appointment of The Bank of New York Mellon Trust Company, National Association, as successor trustee, became effective on March 1, 2023.

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