Page 1

COSTCO WHOLESALE NEWS RELEASE Costco Wholesale Corporation Reports September Sales Results 2026-10-07 ISSAQUAH , Wash . , Oct. 07 , 2026 ( GLOBE NEWSWIRE ) -- Costco Wholesale Corporation ( " Costco " or the " Company " ) ( Nasdaq : COST ) today reported net sales of $ 30.02 billion for the retail month of September , the five weeks ended October 4 , 2026 , an increase of 13.0 percent from $ 26.58 billion last year . Comparable sales were as follows : U.S. Canada Other International Total Company 5 Weeks 12.5 % 6.3 % 10.8 % 11.4 % Comparable sales excluding the impacts from changes in gasoline prices and foreign exchange were as follows : U.S. Canada Other International Total Company 5 Weeks 8.0 % 4.9 % 7.7 % 7.6 % 1