| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Wilcox William Richard | Executive Vice President | 999 LAKE DRIVE, ISSAQUAH | /s/ Alejandro Torres, Attorney-in-Fact | 12 Nov 2025 | 0002087546 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | COST | Common Stock | Sale | -$2.23M | -2.4K | -54.55% | $930.13 | 2K | 07 Nov 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | On October 23, 2025, the reporting person received a distribution of 4,400.9692 shares of common stock previously beneficially owned through Costco's 401(k) plan. Upon the distribution, a fractional share of .9692 was liquidated and the total amount owned was reduced by such amount. |