EX-99.(A)(5) 4 d79889dex99a5.htm INDEPENDENT PUBLIC ACCOUNTING FIRM CHANGE

Independent Public Accounting Firm Change

December 23, 2025

Securities and Exchange Commission

100 F Street, N. E.

Washington, D.C. 20549

Ladies and Gentlemen:

We have read Item 19(a)(5) to Form N-CSR dated December 23, 2025 of Duff & Phelps Utility and Infrastructure Fund Inc. and are in agreement with the statements contained in the first paragraph therein. We have no basis to agree or disagree with other statements of the registrant contained therein.

Yours very truly,

/s/ Ernst & Young LLP

Chicago, Illinois