Denison Mines Corp. announced the appointment of Ms. Elizabeth Sidle to the position of Chief Financial Officer. Ms. Sidle joined Denison in 2016, advancing to the position of Vice President Finance in 2021.

Prior to joining Denison, she held various roles at Ernst & Young LLP, including serving in the firm's National Accounting and Assurance Group. Ms. Sidle is a CPA, CA and holds a Bachelor of Science from Queen's University and a Diploma in Accounting from Wilfred Laurier University. Ms. Sidle has been serving as Denison's Interim Chief Financial Officer since September 1, 2023, during a temporary medical leave of absence of the Company's previous Chief Financial Officer and since his departure from Denison in late October 2023.