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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, currently Chair of the Board and previously Lead Director of the Board Chair from 2016 to 2018, is a corporate director. Ms. Stefan served as a director of Denison Mines Inc. prior to the merger with International Uranium Corporation and was appointed a director of the Company in December 2006. Until 2016, she was 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 and Women in Mining, with over 30 years of business experience, primarily in senior management of public companies in the real estate sector. Ms. Stefan also services on the board of Lundin Mining Corporation.

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 2005. Brian Edgar is the Chairman of Silver Bull Resources Inc., a mineral exploration company listed on the TSX and the OTCMKTS. He has been a board member of Silver Bull since April, 2010. Mr. Edgar holds a Bachelor of Arts degree and a Law degree, both from the University of British Columbia. Mr. Edgar practiced Corporate and Securities law in Vancouver, BC Canada for 16 years before retiring from the law in October 1992. Since that date, Mr. Edgar has served on the board of numerous private and public mining and oil & gas companies. Mr. Edgar currently sits on the board of directors of ShaMaran Petroleum Corp. (TSXV), Silver Bull (TSX) and Lucara Diamond Corp. (TSX).

Ron F. Hochstein (9)

Ron F. Hochstein (9)

Mr. Hochstein has served as a director of Denison since April 2000. Mr. Hochstein is currently the President and Chief Executive Officer and a director of Lundin Gold Inc. (TSX). Mr. Hochstein previously served in various positions at Denison, including Executive Chairman, President and Chief Executive Officer. Mr. Hochstein joined Denison in October 1999, prior to the merger between International Uranium Corporation and Denison Mines Inc., as Vice President, Corporate Development and later served as Vice President and Chief Operating Officer and as President and Chief Executive Officer. Prior to joining Denison, 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 several Lundin Group companies and mentorship under Messrs. Lukas, Ian and the late Adolf Lundin. He began his career in the sector working prospecting jobs on various early stage projects in Canada, Russia, Ireland and Portugal. After graduating, he worked as a commercial analyst 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 Project Superintendent, 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).

Geun Park

Geun Park

Based in South Korea, Mr. Park 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, with responsibility for coordinating KHNP’s overseas nuclear power plant business. Mr. Park has professional expertise developed through working in the nuclear industry since 1997, and has held various positions at KHNP, including most recently the General Manager of the Nuclear Commissioning Team at the Barakah Nuclear Power Plant in the UAE (“Barakah NPP”). Prior to that, Mr. Park held the positions of Senior Manager of the Safety Team at the Barakah NPP, Senior Manager of the EU-APR Team of KHNP’s Central Research Institute, and Senior Manager of the Finland Project Team. Mr. Park has a Bachelor’s degree in Mechanical Design from Choongnam University.

William A. Rand (7)

William A. Rand (7)

Mr. Rand has served as a director of Denison since May 1997, prior to the merger between International Uranium Corporation and Denison Mines Inc. Mr. 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 (TSX), New West Energy Services Inc. (TSXV) and NGEx Resources Inc. (TSX).

Patricia M. Volker (3,5)

Patricia M. Volker (3,5)

Ms. Volker is a corporate director, whose experience is highlighted by over 17 years of service at the Chartered Professional Accountants of Ontario, the self-regulating body for Ontario’s Chartered Professional Accountants, including the roles of Director of Standards Enforcement and then 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 is a CPA, CA and CMA and holds a B.Sc. from the University of Toronto. Ms. Volker also sits on the board of The Empire Life Insurance Company (TSX: EML-A) and is 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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