Costco Wholesale Corp officer, Adamo Claudine, is set to sell 1,500 shares of common stock on 03/11/2024, with an aggregate market value of $1,072,237.50. The shares to be sold were acquired through restricted stock vesting as part of compensation on two separate occasions, with 300 shares acquired on 10/22/2021 and an additional 1,200 shares on 10/22/2022. There have been no securities sold by Claudine in the past three months prior to this notice dated 03/11/2024.

Costco Wholesale Corp officer, Adamo Claudine, is set to sell 1,500 shares of common stock on 03/11/2024, with an aggregate market value of $1,072,237.50. The shares to be sold were acquired through restricted stock vesting as part of compensation on two separate occasions, with 300 shares acquired on 10/22/2021 and an additional 1,200 shares on 10/22/2022. There have been no securities sold by Claudine in the past three months prior to this notice dated 03/11/2024.