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Form SD CAMECO CORP

Wed, 03 Jun 2026 12:28:00 -0400

si-local-file:///var/storage/secattach/20260603/26597694.html

Form SD CAMECO CORP

Wed, 03 Jun 2026 12:28:00 -0400

si-local-file:///var/storage/secattach/20260603/26597694.html

Form 6-K CAMECO CORP For: Jun 01

Mon, 01 Jun 2026 16:05:00 -0400

si-local-file:///var/storage/secattach/20260601/26583456.html

Form 6-K CAMECO CORP For: Jun 01

Mon, 01 Jun 2026 16:05:00 -0400

si-local-file:///var/storage/secattach/20260601/26583456.html

Cameco increases ownership in Cigar Lake uranium mine to 57.4%

Mon, 01 Jun 2026 06:32:13 -0400

Cameco Corp. (NYSE: CCJ) will acquire a 5% stake in the Cigar Lake uranium mine from TEPCO Resources Inc., increasing its ownership to 57.418% from 54.547%. Partner Orano Canada Inc. will also acquire a portion, bringing its stake to 42.582%.

Cameco will pay approximately $115.75 million for its share of TEPCO's interest, subject to customary closing adjustments. The transaction requires regulatory approvals and is expected to close in the third quarter of 2026.

The Cigar Lake mine in northern Saskatchewan contains proven and probable reserves of 172.4 million pounds of uranium oxide, with additional measured and indicated resources of 26.3 million pounds

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

SASKATOON, Saskatchewan--(BUSINESS WIRE)-- Cameco (TSX: CCO; NYSE: CCJ) and Orano Canada Inc. (Orano) have reached agreement with TEPCO Resources Inc. (TEPCO) to acquire TEPCO’s 5% participating interest in the Cigar Lake Joint Venture. Upon closing, Cameco’s ownership stake in the Cigar Lake uranium mine in northern Saskatchewan will increase by 2.871 percentage points to 57.418%, while Orano’s share will rise by 2.129 percentage points to 42.582%.

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Cameco Increases Ownership Stake in Cigar Lake Mine

Mon, 01 Jun 2026 06:30:00 -0400

All amounts in Canadian dollars unless specified otherwise

“Cigar Lake is among the world’s best uranium mines, producing the highest-grade uranium ore from a safe, reliable, and cost-effective operation,” said Cameco’s Chief

Form 6-K CAMECO CORP For: May 28

Thu, 28 May 2026 10:03:00 -0400

si-local-file:///var/storage/secattach/20260528/26562884.html

Form 6-K CAMECO CORP For: May 28

Thu, 28 May 2026 10:03:00 -0400

si-local-file:///var/storage/secattach/20260528/26562884.html

Cameco resumes full production at McArthur River and Key Lake operations

Wed, 27 May 2026 17:18:56 -0400

Cameco Corp. (NYSE: CCJ) announced that its McArthur River mine and Key Lake mill have returned to full production following a temporary disruption caused by flooding in northern Saskatchewan.

The company had halted or reduced operations at the facilities on May 10, 2026, after flooding caused the partial collapse of the Smoothstone River Bridge, which serves as the primary supply route to the sites. Weight and traffic restrictions on alternative roadways initially prevented delivery of critical operating materials.

Cameco stated it can now consistently deliver required materials using a secondary route, allowing operations to resume. The company maintains regular contact with the

Cameco Announces McArthur River/Key Lake Operation Resumes Production

Wed, 27 May 2026 17:15:00 -0400

All amounts in Canadian dollars unless specified otherwise

SASKATOON, Saskatchewan--(BUSINESS WIRE)-- Cameco (TSX: CCO; NYSE: CCJ) today announced that the Key Lake mill and McArthur River mine have returned to full production activities following a disruption caused by flooding in northern Saskatchewan. Our 2026 consolidated production outlook remains unchanged.

On May 10, 2026, Cameco announced that Key Lake had temporarily halted production activities and McArthur River had reduced activities due to the impact of flooding in northern Saskatchewan. While our northern Saskatchewan sites were not directly impacted by flood waters, the Smoothstone River Bridge, which is on the

Cameco Announces McArthur River/Key Lake Operation Resumes Production

Wed, 27 May 2026 17:15:00 -0400

All amounts in Canadian dollars unless specified otherwise

Cameco Announces McArthur River/Key Lake Operation Resumes Production

Wed, 27 May 2026 17:15:00 -0400

All amounts in Canadian dollars unless specified otherwise