All amounts in Canadian dollars unless specified otherwise

Cameco (TSX:CCO, NYSE:CCJ) has announced the election of nine board members at its annual meeting held on May 7, 2026.

Shareholders elected board members Tammy Cook-Searson, Catherine Gignac, Tim Gitzel, Marie Inkster, Kathryn Jackson, Don Kayne, Peter Kukielski, Dominique Minière and Leontine van Leeuwen-Atkins.

Voting Results for Cameco Directors

Nominee	Votes For	% Votes For	Against	% Votes Against
Catherine Gignac	72,913,617	98.13%	1,385,967	1.87%
Tammy Cook-Searson	73,976,654	99.57%	322,919	0.43%
Tim Gitzel	74,100,179	99.77%	174,337	0.23%
Marie Inkster	73,781,111	99.33%	494,252	0.67%
Kathryn Jackson	73,302,463	98.69%	972,353	1.31%
Don Kayne	73,311,694	98.81%	882,589	1.19%
Peter Kukielski	74,137,072	99.78%	162,508	0.22%
Dominique Minière	73,460,367	99.35%	480,348	0.65%
Leontine van Leeuwen-Atkins	73,814,853	99.38%	460,340	0.62%

Profile

Cameco is one of the largest global providers of the uranium fuel needed to power a secure energy future. Our competitive position is based on our controlling ownership of the world's largest high-grade reserves and low-cost operations, as well as significant investments across the nuclear fuel cycle, including ownership interests in Westinghouse Electric Company and Global Laser Enrichment. Utilities around the world rely on Cameco to provide global nuclear fuel solutions for the generation of safe, reliable, carbon-free nuclear power. Our shares trade on the Toronto and New York stock exchanges. Our head office is in Saskatoon, Saskatchewan, Canada.

As used in this news release, the terms we, us, our, the Company and Cameco mean Cameco Corporation and its subsidiaries unless otherwise indicated.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260507468261/en/

Investor inquiries

Cory Kos

306-716-6782

cory_kos@cameco.com

Media inquiries

Veronica Baker

306-385-5541

veronica_baker@cameco.com

Cameco Announces Election of Directors