Costco Wholesale Corporation reported net sales of $6.37 billion for the month of December, an increase of 10% from $5.77 billion in the same five-week period of the prior fiscal year. For the first eighteen weeks of its fiscal year ended January 1, 2006, the Company reported net sales of $20.22 billion, an increase of 11% from $18.17 billion during the similar 18-week period of the prior fiscal year.
Comparable sales for the 5-week and 18-week periods ended January 1, 2006, were as follows:

                   5 Weeks        18 Weeks

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US                    6%              8%

International         8%              9%


Total Company         7%              8%

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