Power of Attorney for William Richard Wilcox at Costco Wholesale Corp

The filing is a Power of Attorney document for William Richard Wilcox, Executive Vice President at Costco Wholesale Corp. The document, signed by Alejandro Torres as Attorney-in-Fact, was filed on October 9, 2025. It includes details about Wilcox's ownership of 4,400.9692 shares of common stock through a 401(k) plan, indicating indirect ownership. The filing also provides the address of Wilcox in Issaquah, WA. This document is essential for legal and compliance purposes, ensuring that Wilcox's interests are represented in corporate matters.