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Cameco's uranium production falls 5% in H1 2026, while disruptions and maintenance outages shaped output and its outlook.
Cameco Corporation CCJ reported a 5% decline in its share of uranium production to 10.1 million pounds in the first half of 2026. Performance across key operations was mixed, with higher production at McArthur River/Key Lake offset by lower output at Cigar Lake.
Cameco’s share of packaged production from McArthur River and Key Lake rose 14% year over year to 5.8 million pounds. Production has been higher in 2026 due to differences in the mine plan.
However, operations faced temporary disruptions in May when flooding in northern Saskatchewan affected the primary transportation route to supply the McArthur River and Key Lake operations. Although the sites had not been impacted, the disruption to the delivery of critical operating materials and reagents led to a temporary suspension of production at Key Lake and reduced mining activity at McArthur River for around two weeks.
