$COST · Costco Wholesale Corporation

Costco Wholesale Corporation filed a Form 4 with the SEC reporting a change in beneficial ownership by Jeffrey S. Raikes, a member of the company’s board of directors. The filing states that on October 22, 2026, Mr. Raikes acquired 266 restricted stock units at a price of $0. These units were granted as equity compensation rather than purchased on the open market.

Under the terms of the grant, the restricted stock units vest in three equal installments. One-third will vest on October 22, 2027, with another third vesting on each of the following two anniversaries, meaning the full award will be vested by October 22, 2029. Following the reported transaction, Mr. Raikes beneficially owned 6,309.936 shares of Costco common stock on a direct basis.

The filing is a routine disclosure required under Section 16(a) of the Securities Exchange Act of 1934 for transactions by directors and certain other insiders. It does not describe any purchase or sale of shares, and the transaction was not reported as having been made under a Rule 10b5-1 trading plan.