Cameco Announces Election of Directors

TSX: CCO website: cameco.com

NYSE: CCJ currency: Cdn (unless noted)

2121 – 11th Street West, Saskatoon, Saskatchewan, S7M 1J3 Canada

Tel: 306-956-6200 Fax: 306-956-6201

Cameco Announces Election of Directors

Saskatoon, Saskatchewan, Canada, May 7, 2019 . . . . . . . . . . . . .

Cameco (TSX: CCO; NYSE: CCJ) has announced the election of 9 board members at its

annual meeting held on May 7, 2019.

Shareholders elected board members Ian Bruce, Daniel Camus, Donald Deranger, Catherine

Gignac, Tim Gitzel, Jim Gowans, Kathryn Jackson, Don Kayne and Anne McLellan.

Voting Results for Cameco Directors

Nominee Votes For % Votes For Withheld % Votes Withheld

Ian Bruce 76,897,465 96.94% 2,424,883 3.06%

Daniel Camus 76,655,466 96.64% 2,666,882 3.36%

Donald Deranger 78,690,622 99.20% 631,726 0.80%

Catherine Gignac 79,057,812 99.67% 264,536 0.33%

Tim Gitzel 78,784,871 99.32% 537,477 0.68%

Jim Gowans 78,693,119 99.21% 629,229 0.79%

Kathryn Jackson 76,674,165 96.66% 2,648,183 3.34%

Don Kayne 72,066,492 90.85% 7,255,856 9.15%

Anne McLellan 74,949,457 94.49% 4,372,891 5.51%

Profile

Cameco is one of the world’s largest providers of uranium fuel. Our competitive position is

based on our controlling ownership of the world’s largest high-grade reserves and low-cost

operations. Our uranium products are used to generate clean electricity in nuclear power plants

around the world. Our shares trade on the Toronto and New York stock exchanges. Our head

office is in Saskatoon, Saskatchewan.

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Investor inquiries: Rachelle Girard 306-956-6403

Media inquiries: Carey Hyndman 306-956-6317