Duff & Phelps Utility and Infrastructure Fund Inc. Discloses Sources of Distribution – Section 19(a) Notice

The Board of Directors of Duff & Phelps Utility and Infrastructure Fund Inc. (NYSE: DPG), a closed-end fund advised by Duff & Phelps Investment Management Co., previously announced the following monthly distribution on December 11, 2025:

Per Share Amount

Ex-Date

Record Date

Payable Date

$0.07

February 27, 2026

February 27, 2026

March 10, 2026

The Fund adopted a managed distribution plan (the “Plan”) in 2015. Under the Plan, the Fund will distribute all available investment income to its shareholders, consistent with the Fund’s investment objective. If and when sufficient investment income is not available on a monthly basis, the Fund will distribute realized capital gains and/or return of capital to its shareholders in order to maintain the monthly $0.07 per share distribution level.

The following table sets forth the estimated amounts of the Fund’s February 2026 distribution to shareholders, together with the cumulative distributions paid from the first day of the fiscal year to this month end, and provides the sources of such distributions. All amounts are expressed per share of common stock based on U.S. generally accepted accounting principles which may differ from federal income tax regulations.

Distribution Estimates	February 2026 (MTD)					Fiscal Year-to-Date (YTD)(1)
(Sources)	Per Share Amount			Percentage of Current Distribution		Per Share Amount			Percentage of Current Distribution
Net Investment Income	$	0.000		0.0	%	$	0.000		0.0	%
Net Realized Short-Term Capital Gains		0.000