Leontine van Leeuwen-Atkins
Board Member
Leontine brings to Cameco’s board a strong audit and finance background in the mining and energy sectors as well as governance and merger and acquisition advisory experience. She serves on three of our committees, including as chair of the Technical Committee.
Leontine is one of the Audit and Finance Committee’s audit financial experts.
Key Skills and Experience
- Risk governance
- Sustainability
- Business growth and transformation
- Financial leadership, accounting and audit
- Digital, technology and cyber security
Biography
As of April 2, 2026
Leontine van Leeuwen-Atkins is a corporate director. She has over 30 years of experience in the global mining, power, utility and oil and gas industries, with a focus on corporate strategy. Leontine was a board member of KPMG Canada’s national board until early 2019, serving on the National Acquisitions and Admissions and Succession committees. She was previously a partner with KPMG Canada and prior to that she was a partner at KPMG Netherlands.
Leontine is a fellow of the Chartered Professional Accountants of Alberta and holds the ICD.D designation from the Institute of Corporate Directors. She received a bachelor of business administration degree in finance from Acadia University and a master of business administration degree from Dalhousie University. In 2024, she achieved a certificate in cybersecurity oversight from Carnegie Mellon University.
Leontine serves as a director and audit committee chair of ARC Resources Ltd. and EPCOR Utilities Inc., a municipal utility. She was formerly audit committee chair at Points International Ltd. and Seven Generations Energy Ltd. She previously served on the Calgary executive advisory council of the Institute of Corporate Directors and from 2014 to 2020 served on the board and as audit committee chair of Calgary Economic Development.
Board and Committee Membership and Attendance
As of December 31, 2025
| 2025 Attendance | ||||
|---|---|---|---|---|
| 2025 Voting Results | Board and Committee Membership | Regular | Special | Overall |
| 71,895,262 votes (98.94%) for 772,925 votes (1.06%) against | Board of directors | 8 of 8 | 3 of 3 | 100% |
| Audit and finance | 5 of 5 | 100% | ||
| Nominating, corporate governance and risk | 4 of 4 | 100% | ||
| Technical (chair) | 3 of 3 | 100% | ||
Other Public Company Boards in the Past Five Years
| ARC Resources Ltd.* (TSX) | 2019 to present |
| Points International Ltd. (TSX and NASDAQ) | 2019 to 2022 |
* Merged with Seven Generations Energy Ltd. in 2021 and Leontine continues to serve on the board after the merger.
Securities Held
As of December 31, 2025
| Year | Cameco Shares | DSUs | Total Shares and DSUs | Market Value of Shares and DSUs1 | Multiple of 2025 Annual Retainer (at market value) | Compliance with Share Ownership Guideline2 |
|---|---|---|---|---|---|---|
| 2025 | - | 18,734 | 18,734 | $ 2,354,550 | 8.1x | Yes |
| 2024 | 3,252 | 16,450 | 19,702 | $ 1,456,156 | ||
| Change | (3,252) | 2,284 | (968) | $ 898,394 |
1 Based on total holdings calculated using $125.68 for 2025 and $73.91 for 2024, the closing prices of Cameco shares on the last trading day of the year on the TSX.
2 For evaluating compliance with Cameco’s share ownership guidelines, Leontine’s shares and DSUs held on December 31, 2025, are valued at $2,354,550 and represent 8.1x the board member retainer of $290,000.