Denison Reports Financial and Operational Results for Q1 2026, Highlighted by Commencement of Site Preparation and Early Works for the Phoenix ISR Uranium Mine, and the Results of its Shareholder Meeting

TORONTO, May 12, 2026 /PRNewswire/ - Denison Mines Corp. ("Denison" or the "Company") (TSX: DML) (NYSE American: DNN) today filed its Condensed Consolidated Financial Statements and Management's Discussion & Analysis ('MD&A') for the quarter ended March 31, 2026. Both documents will be available on the Company's website (at www.denisonmines.com), SEDAR+ (at www.sedarplus.ca) and EDGAR (at www.sec.gov/edgar).