X0306 4 2015-09-24 0 0000909832 COSTCO WHOLESALE CORP /NEW COST 0001184494 JELINEK W CRAIG 999 LAKE DRIVE ISSAQUAH WA 98017 1 1 0 0 President and CEO Common Stock 2015-09-24 4 A 0 40000 A 291036 D Common Stock 2015-09-24 4 F 0 11668 144.87 D 279368 D Grant was initially made in October 2014 subject to performance conditions concerning fiscal 2015, which have been deemed satisfied by the Compensation Committee of the Board of Directors. The shares of restricted stock subject to performance conditions vest ratably over a four year period from satisfaction based on continued employment with the Company. In addition, under the Stock Incentive Plan, long term employees are eligible for accelerated vesting upon the anniversary of their 25th, 30th and 35th years of service. Not applicable. Grant of Restricted Stock Units. Deanna K. Nakashima, attorney-in-fact 2015-09-28