Costco Wholesale : Q3 - FY'25

3rd Quarter FY 2025 Supplemental Information

1

Q3 Highlights - Sales

$62.0B

Net Sales

+8.0% Growth

+5.7%

Comparable Sales

+8.0%

Adjusted Comparable Sales1

+5.2%

Comparable Traffic

+0.4%

Comparable Ticket

+2.7%

Adjusted Comparable Ticket1

+14.8%

E-Comm Comparable Sales

+15.7%

Adjusted E-Comm Comparable Sales2

1 - Excluding impacts from changes in gasoline prices and foreign exchange

2 - E-commerce Comparable Sales excluding impacts from FX

2

Q3 Highlights - Sales - Segment Reporting

Comp Sales	US	Canada	Other International	Total Company
Sales	+6.6%	+2.9%	+3.2%	+5.7%
Ticket	+1.1%	-1.3%	-1.5%	+0.4%
Traffic	+5.5%	+4.3%	+4.8%	+5.2%

Adjusted Comp Sales1	US	Canada	Other International	Total Company
Sales	+7.9%	+7.8%	+8.5%	+8.0%
Ticket	+2.3%	+3.4%	+3.6%	+2.7%
Traffic	+5.5%	+4.3%	+4.8%	+5.2%

1 - Excluding impacts from changes in gasoline prices and foreign exchange

3

Q3 Highlights - Financial Performance

Gross Margin

+13.2% Growth

Diluted EPS

$4.28

Net Income

$1.90B

+13.2% Growth

11.25%

+41 bps vs. Q3 FY'24

+29 bps ex. gas impact

SG&A 9.16%

-20 bps vs. Q3 FY'24

-11 bps ex. gas impact

Reported		Ex Gas1	Reported		Ex Gas1
Core	+36bps	+27bps	Ops	-13bps	-5bps
Other Bus	+30bps	+27bps	Central	-2bps	-1bps
LIFO	-23bps	-23bps	Equity Comp	+1bp	+1bp
Other2	-2bps	-2bps	Preopening	-1bp	-1bp
Total	+41bps	+29bps	Other2	-5bps	-5bps
Core on Core Sales: +36bps			Total	-20bps	-11bps

1 - Excluding the impacts from changes in gasoline prices

2 - Related to the one-time vacation accrual impact from the new employee agreement effective March 2025

+ = Favorable/lower, - = Unfavorable/higher

4

Q3 Highlights - Membership

+10.4%

Membership Income Growth

+11.4%

Membership Income Growth ex-FX

90.2%

Worldwide Membership Renewal Rate

92.7%

US/CN Renewal Rate

79.6MM

Paid Memberships

+6.8% Growth

142.8MM

Total Cardholders

+6.6% Growth

37.6MM

Executive Memberships

73.1%

Penetration of Sales to

Executive Members

5