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Board of Directors

Catherine J.G. Stefan (2,5)

Catherine J.G. Stefan (2,5)

Chair Of The Board

Ms. Stefan, Lead Director of the Denison Board from 2016 to 2018, served as a director of Denison Mines Inc. prior to the merger with International Uranium Corporation and was appointed a director of the Company on December 1, 2006. Ms. Stefan is currently President of Stefan & Associates, a consulting firm. Ms. Stefan served as Chief Operating Officer of O&Y Properties Inc. from 1996 to 1998. From 1999 until 2008, Ms. Stefan was Managing Partner of Tivona Capital Corporation, a private investment firm. Ms. Stefan obtained her Bachelor of Commerce degree from the University of Toronto in 1973. Ms. Stefan is a Chartered Professional Accountant (CPA, CA) and a member of the Institute of Corporate Directors, with over 30 years of business experience, primarily in senior management of public companies.

David Cates

David Cates

President and Chief Executive Officer

Mr. Cates was appointed President & CEO of Denison in 2015 and has also served as Vice President Finance, Tax & Chief Financial Officer as well as Director, Taxation during his tenure with the Company, which began in 2008. Mr. Cates is a Chartered Professional Accountant (CPA, CA) and holds Master of Accounting (MAcc) and Honours Bachelor of Arts (BA) degrees from the University of Waterloo. Mr. Cates also sits on the board of directors of GoviEx Uranium Inc. (TSX-V: GXU), Skyharbour Resources Ltd. (TSX-V: SYH), and the Canadian Nuclear Association (www.cna.ca).

W. Robert Dengler (6,8)

W. Robert Dengler (6,8)

Mr. Dengler served as a director of Denison Mines Inc. prior to the merger with International Uranium Corporation and was appointed a director of the Company on December 1, 2006. Mr. Dengler is currently engaged as a Corporate Director. In 2006, Mr. Dengler retired from his position as Non-Executive Vice-Chairman of Dynatec Corporation. Until January 2005, Mr. Dengler served as President and Chief Executive Officer of Dynatec Corporation, a position which he held for 25 years. Before founding Dynatec, Mr. Dengler was a partner and Vice President & General Manager of J.S. Redpath Limited. Mr. Dengler has more than 40 years of management experience. Mr. Dengler obtained his B.Sc. from Queen's University in 1964.

Brian D. Edgar (3,4)

Brian D. Edgar (3,4)

Mr. Edgar has served as a director of the Company since March 22, 2005. Mr. Edgar is currently the Chairman of SilverBull Resources Inc., a mineral exploration company listed on the TSX and the OTCMKTS. He also serves as President and Chief Executive Officer of Dome Ventures Corporation, a wholly-owned subsidiary of SilverBull. Prior to joining SilverBull in 2012, Mr. Edgar worked as a director at Rand Edgar Capital Corp. (now Rand Edgar Investment Corp.), a private investment company established in 1992 by Messrs. Rand and Edgar. Mr. Edgar is a lawyer who practiced corporate and securities law for 16 years.

Ron F. Hochstein (9)

Ron F. Hochstein (9)

Mr. Hochstein is currently a director of the Company, after having served as its Executive Chairman as well as President and Chief Executive Officer since 2009. Previously he served as President and Chief Operating Officer. Prior to the merger between International Uranium Corporation and Denison Mines Inc., Mr. Hochstein served as President and Chief Executive Officer of the Company from April 2000. Mr. Hochstein has served as a director of the Company since April 2000. Mr. Hochstein joined the Company in October 1999 as Vice President, Corporate Development and later served as Vice President and Chief Operating Officer. Prior to joining the Company, Mr. Hochstein was a Project Manager with Simons Mining Group and was with Noranda Minerals as a metallurgical engineer. Mr. Hochstein is a Professional Engineer and holds an MBA from the University of British Columbia and a B.Sc. from the University of Alberta.

Jack Lundin (9)

Jack Lundin (9)

Mr. Lundin has been involved in the natural resource industry his entire life through exposure to the various Lundin Group companies and mentorship under Messrs. Lukas, Ian and the late Adolf Lundin. He began his career in the sector working prospecting jobs and as a field technician on projects around the world including Canada, Russia, Ireland and Portugal. After that, he worked as an analyst in the commercial department for Lundin Norway AS., a subsidiary of Lundin Petroleum AB. Since 2016, Mr. Lundin has been employed with Lundin Gold Inc. (TSX: LUG), currently holding the position of Senior Mine Project Engineer, on the construction of the world class Fruta del Norte gold project in Ecuador. Mr. Lundin received a Bachelor of Science degree in Business Administration from Chapman University and a Master of Engineering degree in Mineral Resource Engineering from the University of Arizona. Mr. Lundin also sits on the board of directors of NGEx Resources Inc. (TSX: NGQ).

William A. Rand (7)

William A. Rand (7)

William Rand is the President and a Director of Rand Edgar Investment Corp., a private investment company which invests in early stage venture capital companies. Mr. Rand practiced corporate/securities law for nearly 25 years before retiring from the practice of law in 1992 to establish Rand Edgar Capital Corp. (succeeded by Rand Edgar Investment Corp.). Mr. Rand received a Bachelor of Commerce degree (Honours Economics) from McGill University, a law degree from Dalhousie University and a Master of Laws degree in international law from the London School of Economics and a Doctor of Laws honoris causa from Dalhousie University. Mr.Rand is also a director of Lundin Mining Corporation, Lundin Petroleum AB, New West Energy Services Inc. and NGEx Resources Inc.

Moo Hwan Seo

Moo Hwan Seo

Based in South Korea, Mr. Seo is currently General Manager of the Global Business Division in the Global Nuclear Business Department at Korea Hydro Nuclear Power (“KHNP”), a subsidiary of the Korea Electric Power Corporation (“KEPCO”), with responsibility for coordinating KHNP’s overseas nuclear power plant business. Mr. Seo started his career with KEPCO in 1992, and since then has developed professional expertise and rich experience, holding numerous roles with KEPCO and KHNP prior to his current one, including (i) Senior Manager of Commissioning Team, Senior Manager of the Operation Team, and then Senior Manager of the System Technology Team at the Hanul Nuclear Power Plant, (ii) Senior Manager of the Overseas Nuclear Business Team, (iii) General Manager of Construction Technology and then General Manager of Turbine Commissioning Team at the Shin-Hanul Nuclear Power Plant, and then (iv) General Manager of the International Cooperation Team. Mr. Seo has a Bachelor of Metallurgical Engineering from Young Nam University.

Patricia M. Volker (3,5)

Patricia M. Volker (3,5)

Ms. Volker is a Chartered Professional Accountant, whose experience is highlighted by over ten years of service at the Chartered Professional Accountants of Ontario, the self-regulating body for Ontario’s Chartered Professional Accountants, including the role of Director of Standards Enforcement and the role of Director, Public Accounting, which she held until her retirement on December 31, 2015. Ms. Volker served in various capacities in the accounting profession during her 30+ year career and brings a wealth of advisory, public accounting, banking and regulatory expertise to the Denison Board. Ms. Volker also sits on the board and chairs the Audit committee of Labrador Iron Ore Royalty Corporation (TSX: LIF) as well as serves on the boards of other private company and organization boards, including the volunteer board of directors of Ornge (on which she chairs the Finance and Audit committee and is a member of the Nominating and Governance committee). Ms. Volker is a CPA, CA and CMA and holds a B.Sc. from the University of Toronto.

Notes:
(2) Chair, Audit Committee
(3) Member, Audit Committee
(4) Chair, Corporate Governance and Nominating Committee
(5) Member, Corporate Governance and Nominating Committee
(6) Chair, Compensation Committee
(7) Member, Compensation Committee
(8) Chair, Environment Health and Safety Committee
(9) Member, Environment, Health and Safety Committee

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