Catherine Gignac
Board Chair
Catherine’s extensive career as a mining equity research analyst and geologist, and experience in project value analysis and mergers and acquisitions, contribute to the skills of Cameco’s board. She serves as chair of Cameco’s board and is a member of each board committee.
Key Skills and Experience
- Governance
- Executive leadership and strategy
- Risk governance
- Financial leadership, accounting and audit
- Investor relations
- Mining operations and exploration
Biography
As of April 2, 2026
Catherine Gignac is a corporate director. She has more than 30 years of experience in capital markets and the mining industry and has held senior positions as a mining equity research analyst with leading global brokerage firms and independent boutiques. She has extensive experience in project value and investment analysis and spent her early working years as a geologist.
Catherine received a bachelor of science degree in geology (honours) from McMaster University. She is a member of the Institute of Corporate Directors, the Canadian Institute of Mining, Metallurgy and Petroleum (CIM), and the Prospectors and Developers Association of Canada (PDAC). She is a past chair of the board of Women in Mining Canada where she served from 2018 to 2022 and served as a member of the Canadian Securities Administrators’ mining technical advisory and monitoring committee (CSA MTAMC) until October 2020. She holds the ICD.D designation from the Institute of Corporate Directors.
Catherine has served on the Audit and Finance Committee and the Technical Committee (formerly Reserves Oversight) for her entire tenure. She has served as a member of the Nominating, Corporate Governance and Risk Committee since 2019 and as chair from 2021 to 2024, and as chair of the Technical Committee from 2015 to 2022. She has served on the audit, compensation, nominating and sustainability committees of other public company boards, and served as chair of the board of Corvus Gold Inc. for five years.
Board and Committee Membership and Attendance
As of December 31, 2025
| 2025 Attendance | ||||
|---|---|---|---|---|
| 2025 Voting Results | Board and Committee Membership | Regular | Special | Overall |
| 70,619,061 votes (97.18%) for 2,049,126 votes (2.82%) against | Board chair* | 8 of 8 | 3 of 3 | 100% |
* Catherine is a member of all committees, and she attended all committee meetings in 2025.
Other Public Company Boards in the Past Five Years
| OceanaGold Corporation* (TSX) | 2019 to June 2024 |
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 | 24,500 | 40,802 | 65,302 | $ 8,207,139 | 15.5x | Yes |
| 2024 | 25,500 | 37,118 | 62,618 | $ 4,628,067 | ||
| Change | (1,000) | 3,684 | 2,684 | $ 3,579,072 |
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, Catherine’s shares and DSUs held on December 31, 2025, are valued at $8,207,139 and represent 15.5x the board chair retainer of $530,000.