Tiffany Marie Barbre - 01 Jul 2025 Form 3 Insider Report for COSTCO WHOLESALE CORP /NEW (COST)

Role
Principal Accounting Officer
Signature
/s/ Alejandro Torres, Attorney-in-Fact
Issuer symbol
COST
Transactions as of
01 Jul 2025
Net transactions value
$0
Form type
3
Filing time
10 Jul 2025, 16:27:05 UTC
Next filing
24 Oct 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Barbre Tiffany Marie Principal Accounting Officer 999 LAKE DRIVE, ISSAQUAH /s/ Alejandro Torres, Attorney-in-Fact 10 Jul 2025 0002076006

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding COST Common Stock 4,819 01 Jul 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents unvested grants of Restricted Stock Units ("RSUs"). The vesting schedule for the RSUs is as follows: 1,781.702 shares will vest on October 22, 2025; 1,315.458 shares will vest on October 22, 2026; 945.906 shares will vest on October 22, 2027; 560.084 shares will vest on October 22, 2028; and 216 shares will vest on October 22, 2029.

Remarks:

Exhibit 24: Power of Attorney provided herewith.